“Apache Hadoop” Changelog

Release 2.8.0 - 2017-03-17

INCOMPATIBLE CHANGES:

JIRA	Summary	Priority	Component	Reporter	Contributor
YARN-3241	FairScheduler handles “invalid” queue names inconsistently	Major	fairscheduler	zhihai xu	zhihai xu
HADOOP-11731	Rework the changelog and releasenotes	Major	documentation	Allen Wittenauer	Allen Wittenauer
HADOOP-11746	rewrite test-patch.sh	Major	build, test	Allen Wittenauer	Allen Wittenauer
HDFS-8226	Non-HA rollback compatibility broken	Blocker	.	J.Andreina	J.Andreina
HADOOP-11772	RPC Invoker relies on static ClientCache which has synchronized(this) blocks	Major	ipc, performance	Gopal V	Haohui Mai
YARN-2336	Fair scheduler REST api returns a missing ‘[’ bracket JSON for deep queue tree	Major	fairscheduler	Kenji Kikushima	Akira Ajisaka
YARN-41	The RM should handle the graceful shutdown of the NM.	Major	nodemanager, resourcemanager	Ravi Teja Ch N V	Devaraj K
HDFS-6564	Use slf4j instead of common-logging in hdfs-client	Major	build	Haohui Mai	Rakesh R
MAPREDUCE-6427	Fix typo in JobHistoryEventHandler	Minor	.	Brahma Reddy Battula	Ray Chiang
HADOOP-12269	Update aws-sdk dependency to 1.10.6; move to aws-sdk-s3	Major	fs/s3	Thomas Demoor	Thomas Demoor
HDFS-8900	Compact XAttrs to optimize memory footprint.	Major	namenode	Yi Liu	Yi Liu
YARN-4087	Followup fixes after YARN-2019 regarding RM behavior when state-store error occurs	Major	.	Jian He	Jian He
HADOOP-12416	Trash messages should be handled by Logger instead of being delivered on System.out	Major	trash	Ashutosh Chauhan	Mingliang Liu
HDFS-9063	Correctly handle snapshot path for getContentSummary	Major	namenode	Jing Zhao	Jing Zhao
HDFS-9433	DFS getEZForPath API on a non-existent file should throw FileNotFoundException	Major	encryption	Rakesh R	Rakesh R
HADOOP-11252	RPC client does not time out by default	Critical	ipc	Wilfred Spiegelenburg	Masatake Iwasaki
HDFS-9047	Retire libwebhdfs	Major	webhdfs	Allen Wittenauer	Haohui Mai
HADOOP-12651	Replace dev-support with wrappers to Yetus	Major	scripts	Allen Wittenauer	Allen Wittenauer
HADOOP-12552	Fix undeclared/unused dependency to httpclient	Minor	build	Masatake Iwasaki	Masatake Iwasaki
HADOOP-11792	Remove all of the CHANGES.txt files	Major	build	Allen Wittenauer	Andrew Wang
YARN-5035	FairScheduler: Adjust maxAssign dynamically when assignMultiple is turned on	Major	fairscheduler	Karthik Kambatla	Karthik Kambatla
HADOOP-12892	fix/rewrite create-release	Blocker	build	Allen Wittenauer	Allen Wittenauer
HADOOP-13139	Branch-2: S3a to use thread pool that blocks clients	Major	fs/s3	Pieter Reuse	Pieter Reuse
HADOOP-13382	remove unneeded commons-httpclient dependencies from POM files in Hadoop and sub-projects	Major	build	Matt Foley	Matt Foley
HDFS-7933	fsck should also report decommissioning replicas.	Major	namenode	Jitendra Nath Pandey	Xiaoyu Yao
HADOOP-13560	S3ABlockOutputStream to support huge (many GB) file writes	Major	fs/s3	Steve Loughran	Steve Loughran
HDFS-11048	Audit Log should escape control characters	Major	.	Eric Badger	Eric Badger
HADOOP-13812	Upgrade Tomcat to 6.0.48	Blocker	kms	John Zhuge	John Zhuge
HADOOP-13929	ADLS connector should not check in contract-test-options.xml	Major	fs/adl, test	John Zhuge	John Zhuge

IMPORTANT ISSUES:

JIRA	Summary	Priority	Component	Reporter	Contributor
YARN-4785	inconsistent value type of the “type” field for LeafQueueInfo in response of RM REST API - cluster/scheduler	Major	webapp	Jayesh	Varun Vasudev

NEW FEATURES:

JIRA	Summary	Priority	Component	Reporter	Contributor
HADOOP-8934	Shell command ls should include sort options	Minor	fs	Jonathan Allen	Jonathan Allen
HADOOP-9477	Add posixGroups support for LDAP groups mapping service	Major	.	Kai Zheng	Dapeng Sun
HDFS-8009	Signal congestion on the DataNode	Major	datanode	Haohui Mai	Haohui Mai
YARN-2901	Add errors and warning metrics page to RM, NM web UI	Major	nodemanager, resourcemanager	Varun Vasudev	Varun Vasudev
HDFS-7891	A block placement policy with best rack failure tolerance	Minor	namenode	Walter Su	Walter Su
HADOOP-11843	Make setting up the build environment easier	Major	build	Niels Basjes	Niels Basjes
MAPREDUCE-6284	Add Task Attempt State API to MapReduce Application Master REST API	Minor	.	Ryu Kobayashi	Ryu Kobayashi
HADOOP-10971	Add -C flag to make hadoop fs -ls print filenames only	Major	fs	Ryan Williams	Kengo Seki
MAPREDUCE-6364	Add a “Kill” link to Task Attempts page	Minor	applicationmaster	Ryu Kobayashi	Ryu Kobayashi
MAPREDUCE-6304	Specifying node labels when submitting MR jobs	Major	.	Jian Fang	Naganarasimha G R
HDFS-8487	Generalize BlockInfo in preparation of merging HDFS-7285 into trunk and branch-2	Major	namenode	Zhe Zhang	Zhe Zhang
HDFS-8608	Merge HDFS-7912 to trunk and branch-2 (track BlockInfo instead of Block in UnderReplicatedBlocks and PendingReplicationBlocks)	Major	.	Zhe Zhang	Zhe Zhang
HADOOP-5732	Add SFTP FileSystem	Minor	fs	Íñigo Goiri	ramtin
HDFS-8622	Implement GETCONTENTSUMMARY operation for WebImageViewer	Major	.	Jagadesh Kiran N	Jagadesh Kiran N
HDFS-8155	Support OAuth2 in WebHDFS	Major	webhdfs	Jakob Homan	Jakob Homan
MAPREDUCE-6415	Create a tool to combine aggregated logs into HAR files	Major	.	Robert Kanter	Robert Kanter
HADOOP-12360	Create StatsD metrics2 sink	Minor	metrics	Dave Marion	Dave Marion
YARN-261	Ability to fail AM attempts	Major	api	Jason Lowe	Rohith Sharma K S
HDFS-9184	Logging HDFS operation's caller context into audit logs	Major	.	Mingliang Liu	Mingliang Liu
HDFS-9057	allow/disallow snapshots via webhdfs	Major	webhdfs	Allen Wittenauer	Brahma Reddy Battula
YARN-4349	Support CallerContext in YARN	Major	.	Wangda Tan	Wangda Tan
YARN-3623	We should have a config to indicate the Timeline Service version	Major	timelineserver	Zhijie Shen	Xuan Gong
HADOOP-12657	Add a option to skip newline on empty files with getMerge -nl	Minor	.	Jan Filipiak	Kanaka Kumar Avvaru
YARN-3458	CPU resource monitoring in Windows	Minor	nodemanager	Inigo Goiri	Inigo Goiri
HADOOP-12691	Add CSRF Filter for REST APIs to Hadoop Common	Major	security	Larry McCay	Larry McCay
HADOOP-12635	Adding Append API support for WASB	Major	fs/azure	Dushyanth	Dushyanth
HADOOP-12426	Add Entry point for Kerberos health check	Minor	security	Steve Loughran	Steve Loughran
HDFS-9244	Support nested encryption zones	Major	encryption	Xiaoyu Yao	Zhe Zhang
HADOOP-12548	Read s3a creds from a Credential Provider	Major	fs/s3	Allen Wittenauer	Larry McCay
HDFS-9711	Integrate CSRF prevention filter in WebHDFS.	Major	datanode, namenode, webhdfs	Chris Nauroth	Chris Nauroth
HDFS-9835	OIV: add ReverseXML processor which reconstructs an fsimage from an XML file	Major	tools	Colin P. McCabe	Colin P. McCabe
HDFS-9239	DataNode Lifeline Protocol: an alternative protocol for reporting DataNode liveness	Major	datanode, namenode	Chris Nauroth	Chris Nauroth
HADOOP-12909	Change ipc.Client to support asynchronous calls	Major	ipc	Tsz Wo Nicholas Sze	Xiaobing Zhou
HDFS-9945	Datanode command for evicting writers	Major	datanode	Kihwal Lee	Kihwal Lee
HADOOP-13008	Add XFS Filter for UIs to Hadoop Common	Major	security	Larry McCay	Larry McCay
HADOOP-13065	Add a new interface for retrieving FS and FC Statistics	Major	fs	Ram Venkatesh	Mingliang Liu
HADOOP-12723	S3A: Add ability to plug in any AWSCredentialsProvider	Major	fs/s3	Steven K. Wong	Steven K. Wong
HADOOP-13226	Support async call retry and failover	Major	io, ipc	Xiaobing Zhou	Tsz Wo Nicholas Sze
HADOOP-12537	S3A to support Amazon STS temporary credentials	Minor	fs/s3	Sean Mackrory	Sean Mackrory
HDFS-9804	Allow long-running Balancer to login with keytab	Major	balancer & mover, security	Xiao Chen	Xiao Chen
HDFS-10918	Add a tool to get FileEncryptionInfo from CLI	Major	encryption	Xiao Chen	Xiao Chen
HADOOP-13716	Add LambdaTestUtils class for tests; fix eventual consistency problem in contract test setup	Major	test	Steve Loughran	Steve Loughran
HADOOP-14049	Honour AclBit flag associated to file/folder permission for Azure datalake account	Major	fs/adl	Vishwajeet Dusane	Vishwajeet Dusane
HADOOP-14048	REDO operation of WASB#AtomicRename should create placeholder blob for destination folder	Critical	fs/azure	NITIN VERMA	NITIN VERMA

IMPROVEMENTS:

JIRA	Summary	Priority	Component	Reporter	Contributor
HDFS-2580	NameNode#main(...) can make use of GenericOptionsParser.	Minor	namenode	Harsh J	Harsh J
MAPREDUCE-5232	log classpath and other key properties on child JVM start	Major	mrv1, mrv2	Sangjin Lee	Sangjin Lee
HADOOP-7713	dfs -count -q should label output column	Trivial	.	Nigel Daley	Jonathan Allen
HDFS-7546	Document, and set an accepting default for dfs.namenode.kerberos.principal.pattern	Minor	security	Harsh J	Harsh J
HADOOP-11692	Improve authentication failure WARN message to avoid user confusion	Major	ipc	Yongjun Zhang	Yongjun Zhang
HADOOP-11226	Add a configuration to set ipc.Client's traffic class with IPTOS_LOWDELAY|IPTOS_RELIABILITY	Major	ipc	Gopal V	Gopal V
HADOOP-11711	Provide a default value for AES/CTR/NoPadding CryptoCodec classes	Minor	.	Andrew Wang	Andrew Wang
MAPREDUCE-4414	Add main methods to JobConf and YarnConfiguration, for debug purposes	Major	client	Harsh J	Plamen Jeliazkov
MAPREDUCE-6105	Inconsistent configuration in property mapreduce.reduce.shuffle.merge.percent	Trivial	.	Dongwook Kwon	Ray Chiang
HDFS-2360	Ugly stacktrace when quota exceeds	Minor	hdfs-client	Rajit Saha	Harsh J
MAPREDUCE-6100	replace “mapreduce.job.credentials.binary” with MRJobConfig.MAPREDUCE_JOB_CREDENTIALS_BINARY for better readability.	Trivial	mrv2	zhihai xu	zhihai xu
MAPREDUCE-5755	MapTask.MapOutputBuffer#compare/swap should have @Override annotation	Trivial	.	Tsuyoshi Ozawa	Tsuyoshi Ozawa
MAPREDUCE-4653	TestRandomAlgorithm has an unused “import” statement	Trivial	contrib/gridmix	Amir Sanjar	Amir Sanjar
HADOOP-11659	o.a.h.fs.FileSystem.Cache#remove should use a single hash map lookup	Minor	fs	Gera Shegalov	Brahma Reddy Battula
HADOOP-11709	Time.NANOSECONDS_PER_MILLISECOND - use class-level final constant instead of method variable	Trivial	.	Ajith S	Ajith S
HDFS-7835	make initial sleeptime in locateFollowingBlock configurable for DFSClient.	Major	hdfs-client	zhihai xu	zhihai xu
HDFS-7829	Code clean up for LocatedBlock	Minor	.	Jing Zhao	Takanobu Asanuma
MAPREDUCE-6282	Reuse historyFileAbsolute.getFileSystem in CompletedJob#loadFullHistoryData for code optimization.	Trivial	jobhistoryserver	zhihai xu	zhihai xu
HADOOP-11447	Add a more meaningful toString method to SampleStat and MutableStat	Minor	metrics	Karthik Kambatla	Karthik Kambatla
YARN-3350	YARN RackResolver spams logs with messages at info level	Major	.	Wilfred Spiegelenburg	Wilfred Spiegelenburg
MAPREDUCE-6239	Consolidate TestJobConf classes in hadoop-mapreduce-client-jobclient and hadoop-mapreduce-client-core	Minor	client	Varun Saxena	Varun Saxena
MAPREDUCE-5190	Unnecessary condition test in RandomSampler	Minor	mrv2	Jingguo Yao	Jingguo Yao
MAPREDUCE-6287	Deprecated methods in org.apache.hadoop.examples.Sort	Minor	examples	Chao Zhang	Chao Zhang
HADOOP-11737	mockito‘s version in hadoop-nfs’ pom.xml shouldn’t be specified	Minor	nfs	Kengo Seki	Kengo Seki
YARN-2868	FairScheduler: Metric for latency to allocate first container for an application	Major	.	Ray Chiang	Ray Chiang
HDFS-7875	Improve log message when wrong value configured for dfs.datanode.failed.volumes.tolerated	Trivial	datanode	nijel	nijel
HDFS-7793	Refactor DFSOutputStream separating DataStreamer out	Major	hdfs-client	Kai Zheng	Li Bo
HADOOP-11741	Add LOG.isDebugEnabled() guard for some LOG.debug()	Major	.	Walter Su	Walter Su
MAPREDUCE-579	Streaming “slowmatch” documentation	Trivial	contrib/streaming	Bo Adler	Harsh J
HDFS-7928	Scanning blocks from disk during rolling upgrade startup takes a lot of time if disks are busy	Major	datanode	Rushabh S Shah	Rushabh S Shah
HADOOP-11719	[Fsshell] Remove bin/hadoop reference from GenericOptionsParser default help text	Minor	scripts	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-8004	Use KeyProviderCryptoExtension#warmUpEncryptedKeys when creating an encryption zone	Trivial	encryption	Andrew Wang	Andrew Wang
HDFS-7890	Improve information on Top users for metrics in RollingWindowsManager and lower log level	Major	.	J.Andreina	J.Andreina
HDFS-4396	Add START_MSG/SHUTDOWN_MSG for ZKFC	Major	auto-failover, ha, tools	Liang Xie	Liang Xie
HADOOP-11660	Add support for hardware crc of HDFS checksums on ARM aarch64 architecture	Minor	native	Edward Nevill	Edward Nevill
HDFS-7645	Rolling upgrade is restoring blocks from trash multiple times	Major	datanode	Nathan Roberts	Keisuke Ogiwara
HDFS-3918	EditLogTailer shouldn't log WARN when other node is in standby mode	Major	ha	Todd Lipcon	Todd Lipcon
HDFS-7944	Minor cleanup of BlockPoolManager#getAllNamenodeThreads	Minor	.	Arpit Agarwal	Arpit Agarwal
YARN-3258	FairScheduler: Need to add more logging to investigate allocations	Minor	fairscheduler	Anubhav Dhoot	Anubhav Dhoot
HDFS-7671	hdfs user guide should point to the common rack awareness doc	Major	documentation	Allen Wittenauer	Kai Sasaki
YARN-3412	RM tests should use MockRM where possible	Major	resourcemanager, test	Karthik Kambatla	Karthik Kambatla
YARN-3428	Debug log resources to be localized for a container	Trivial	nodemanager	Karthik Kambatla	Karthik Kambatla
YARN-3424	Change logs for ContainerMonitorImpl's resourse monitoring from info to debug	Major	nodemanager	Anubhav Dhoot	Anubhav Dhoot
YARN-3248	Display count of nodes blacklisted by apps in the web UI	Major	capacityscheduler, resourcemanager	Varun Vasudev	Varun Vasudev
HDFS-7978	Add LOG.isDebugEnabled() guard for some LOG.debug(..)	Major	.	Walter Su	Walter Su
HDFS-8008	Support client-side back off when the datanodes are congested	Major	hdfs-client	Haohui Mai	Haohui Mai
HDFS-7888	Change DataStreamer/DFSOutputStream/DFSPacket for convenience of subclassing	Minor	hdfs-client	Li Bo	Li Bo
HDFS-8035	Move checkBlocksProperlyReplicated() in FSNamesystem to BlockManager	Minor	namenode	Haohui Mai	Haohui Mai
HADOOP-9805	Refactor RawLocalFileSystem#rename for improved testability.	Minor	fs, test	Chris Nauroth	Jean-Pierre Matsumoto
HADOOP-11785	Reduce number of listStatus operation in distcp buildListing()	Minor	tools/distcp	Zoran Dimitrijevic	Zoran Dimitrijevic
HADOOP-11717	Add Redirecting WebSSO behavior with JWT Token in Hadoop Auth	Major	security	Larry McCay	Larry McCay
YARN-3294	Allow dumping of Capacity Scheduler debug logs via web UI for a fixed time period	Major	capacityscheduler	Varun Vasudev	Varun Vasudev
HDFS-8073	Split BlockPlacementPolicyDefault.chooseTarget(..) so it can be easily overrided.	Trivial	namenode	Walter Su	Walter Su
HDFS-8076	Code cleanup for DFSInputStream: use offset instead of LocatedBlock when possible	Major	.	Zhe Zhang	Zhe Zhang
HDFS-7979	Initialize block report IDs with a random number	Minor	datanode	Andrew Wang	Andrew Wang
HDFS-8101	DFSClient use of non-constant DFSConfigKeys pulls in WebHDFS classes at runtime	Minor	hdfs-client	Sean Busbey	Sean Busbey
YARN-3293	Track and display capacity scheduler health metrics in web UI	Major	capacityscheduler	Varun Vasudev	Varun Vasudev
MAPREDUCE-6291	Correct mapred queue usage command	Minor	client	Brahma Reddy Battula	Brahma Reddy Battula
MAPREDUCE-6307	Remove property mapreduce.tasktracker.taskmemorymanager.monitoringinterval	Minor	.	Akira Ajisaka	J.Andreina
YARN-3348	Add a ‘yarn top’ tool to help understand cluster usage	Major	resourcemanager	Varun Vasudev	Varun Vasudev
YARN-3469	ZKRMStateStore: Avoid setting watches that are not required	Minor	.	Jun Gong	Jun Gong
HDFS-8117	More accurate verification in SimulatedFSDataset: replace DEFAULT_DATABYTE with patterned data	Major	.	Zhe Zhang	Zhe Zhang
HDFS-8144	Split TestLazyPersistFiles into multiple tests	Major	test	Arpit Agarwal	Arpit Agarwal
YARN-3404	View the queue name to YARN Application page	Minor	.	Ryu Kobayashi	Ryu Kobayashi
YARN-3451	Add start time and Elapsed in ApplicationAttemptReport and display the same in RMAttemptBlock WebUI	Major	api, webapp	Rohith Sharma K S	Rohith Sharma K S
HDFS-7863	Missing description of some methods and parameters in javadoc of FSDirDeleteOp	Minor	.	Yongjun Zhang	Brahma Reddy Battula
HDFS-8152	Refactoring of lazy persist storage cases	Major	test	Arpit Agarwal	Arpit Agarwal
HDFS-8133	Improve readability of deleted block check	Major	namenode	Daryn Sharp	Daryn Sharp
HADOOP-11812	Implement listLocatedStatus for ViewFileSystem to speed up split calculation	Blocker	fs	Gera Shegalov	Gera Shegalov
MAPREDUCE-6297	Task Id of the failed task in diagnostics should link to the task page	Minor	jobhistoryserver	Siqi Li	Siqi Li
HADOOP-11827	Speed-up distcp buildListing() using threadpool	Major	tools/distcp	Zoran Dimitrijevic	Zoran Dimitrijevic
YARN-3494	Expose AM resource limit and usage in QueueMetrics	Major	.	Jian He	Rohith Sharma K S
YARN-3503	Expose disk utilization percentage and bad local and log dir counts on NM via JMX	Major	nodemanager	Varun Vasudev	Varun Vasudev
YARN-3410	YARN admin should be able to remove individual application records from RMStateStore	Critical	resourcemanager, yarn	Wangda Tan	Rohith Sharma K S
HDFS-8215	Refactor NamenodeFsck#check method	Minor	namenode	Takanobu Asanuma	Takanobu Asanuma
YARN-3511	Add errors and warnings page to ATS	Major	timelineserver	Varun Vasudev	Varun Vasudev
HDFS-8176	Record from/to snapshots in audit log for snapshot diff report	Minor	snapshots	J.Andreina	J.Andreina
YARN-3406	Display count of running containers in the RM's Web UI	Minor	.	Ryu Kobayashi	Ryu Kobayashi
HADOOP-11357	Print information of the build enviornment in test-patch.sh	Minor	scripts	Haohui Mai	Allen Wittenauer
HDFS-8204	Mover/Balancer should not schedule two replicas to the same DN	Minor	balancer & mover	Walter Su	Walter Su
HDFS-8280	Code Cleanup in DFSInputStream	Minor	.	Jing Zhao	Jing Zhao
HDFS-8283	DataStreamer cleanup and some minor improvement	Minor	hdfs-client	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HDFS-5574	Remove buffer copy in BlockReader.skip	Trivial	.	Binglin Chang	Binglin Chang
HDFS-7770	Need document for storage type label of data node storage locations under dfs.datanode.data.dir	Major	documentation	Xiaoyu Yao	Xiaoyu Yao
HDFS-8200	Refactor FSDirStatAndListingOp	Major	.	Haohui Mai	Haohui Mai
YARN-3363	add localization and container launch time to ContainerMetrics at NM to show these timing information for each active container.	Major	nodemanager	zhihai xu	zhihai xu
HDFS-7397	Add more detail to the documentation for the conf key “dfs.client.read.shortcircuit.streams.cache.size”	Minor	hdfs-client	Tsz Wo Nicholas Sze	Brahma Reddy Battula
YARN-2980	Move health check script related functionality to hadoop-common	Blocker	.	Ming Ma	Varun Saxena
HADOOP-11911	test-patch should allow configuration of default branch	Minor	.	Sean Busbey	Sean Busbey
HDFS-7758	Retire FsDatasetSpi#getVolumes() and use FsDatasetSpi#getVolumeRefs() instead	Major	datanode	Lei (Eddy) Xu	Lei (Eddy) Xu
HADOOP-11925	backport trunk's smart-apply-patch.sh to branch-2	Major	scripts	Allen Wittenauer	Allen Wittenauer
MAPREDUCE-6192	Create unit test to automatically compare MR related classes and mapred-default.xml	Minor	.	Ray Chiang	Ray Chiang
HADOOP-11813	releasedocmaker.py should use today's date instead of unreleased	Minor	build	Allen Wittenauer	Darrell Taylor
YARN-3491	PublicLocalizer#addResource is too slow.	Critical	nodemanager	zhihai xu	zhihai xu
MAPREDUCE-6279	AM should explicity exit JVM after all services have stopped	Major	.	Jason Lowe	Eric Payne
HDFS-8108	Fsck should provide the info on mandatory option to be used along with “-blocks , -locations and -racks”	Trivial	documentation	J.Andreina	J.Andreina
HDFS-8207	Improper log message when blockreport interval compared with initial delay	Minor	.	Brahma Reddy Battula	Brahma Reddy Battula
MAPREDUCE-6079	Rename JobImpl#username to reporterUserName	Major	.	Tsuyoshi Ozawa	Tsuyoshi Ozawa
HDFS-8209	Support different number of datanode directories in MiniDFSCluster.	Minor	test	Surendra Singh Lilhore	Surendra Singh Lilhore
YARN-3169	Drop YARN's overview document	Major	documentation	Allen Wittenauer	Brahma Reddy Battula
YARN-2784	Make POM project names consistent	Minor	build	Rohith Sharma K S	Rohith Sharma K S
MAPREDUCE-5981	Log levels of certain MR logs can be changed to DEBUG	Major	.	Varun Saxena	Varun Saxena
HADOOP-6842	“hadoop fs -text” does not give a useful text representation of MapWritable objects	Major	io	Steven K. Wong	Akira Ajisaka
YARN-20	More information for “yarn.resourcemanager.webapp.address” in yarn-default.xml	Trivial	documentation, resourcemanager	Nemon Lou	Bartosz Ługowski
HDFS-5640	Add snapshot methods to FileContext.	Major	hdfs-client, snapshots	Chris Nauroth	Rakesh R
HDFS-8284	Update documentation about how to use HTrace with HDFS	Major	documentation	Masatake Iwasaki	Masatake Iwasaki
HDFS-7433	Optimize performance of DatanodeManager's node map	Critical	namenode	Daryn Sharp	Daryn Sharp
MAPREDUCE-5248	Let NNBenchWithoutMR specify the replication factor for its test	Minor	client, test	Erik Paulson	Erik Paulson
HADOOP-9737	JarFinder#getJar should delete the jar file upon destruction of the JVM	Major	util	Esteban Gutierrez	Jean-Baptiste Onofré
YARN-1050	Document the Fair Scheduler REST API	Major	documentation, fairscheduler	Sandy Ryza	Kenji Kikushima
YARN-3271	FairScheduler: Move tests related to max-runnable-apps from TestFairScheduler to TestAppRunnability	Major	.	Karthik Kambatla	nijel
YARN-2206	Update document for applications REST API response examples	Minor	documentation	Kenji Kikushima	Brahma Reddy Battula
HDFS-6757	Simplify lease manager with INodeID	Major	.	Haohui Mai	Haohui Mai
HDFS-8327	Simplify quota calculations for snapshots and truncate	Major	.	Haohui Mai	Haohui Mai
YARN-1287	Consolidate MockClocks	Major	.	Sandy Ryza	Sebastian Wong
HDFS-8357	Consolidate parameters of INode.CleanSubtree() into a parameter objects.	Major	.	Haohui Mai	Li Lu
HADOOP-11950	Add cli option to test-patch to set the project-under-test	Minor	.	Sean Busbey	Sean Busbey
HADOOP-11948	test-patch's issue matching regex should be configurable.	Major	.	Sean Busbey	Sean Busbey
MAPREDUCE-5465	Tasks are often killed before they exit on their own	Major	mr-am, mrv2	Radim Kolar	Ming Ma
YARN-3513	Remove unused variables in ContainersMonitorImpl and add debug log for overall resource usage by all containers	Trivial	nodemanager	Naganarasimha G R	Naganarasimha G R
HDFS-8255	Rename getBlockReplication to getPreferredBlockReplication	Major	.	Zhe Zhang	Zhe Zhang
YARN-3613	TestContainerManagerSecurity should init and start Yarn cluster in setup instead of individual methods	Minor	test	Karthik Kambatla	nijel
HDFS-6184	Capture NN's thread dump when it fails over	Major	namenode	Ming Ma	Ming Ma
YARN-3539	Compatibility doc to state that ATS v1 is a stable REST API	Major	documentation	Steve Loughran	Steve Loughran
HADOOP-9723	Improve error message when hadoop archive output path already exists	Trivial	.	Stephen Chu	Yongjun Zhang
HADOOP-11713	ViewFileSystem should support snapshot methods.	Major	fs	Chris Nauroth	Rakesh R
HDFS-8350	Remove old webhdfs.xml and other outdated documentation stuff	Major	documentation	Akira Ajisaka	Brahma Reddy Battula
HADOOP-11960	Enable Azure-Storage Client Side logging.	Major	tools	Dushyanth	Dushyanth
HDFS-6888	Allow selectively audit logging ops	Major	.	Kihwal Lee	Chen He
HDFS-8397	Refactor the error handling code in DataStreamer	Minor	hdfs-client	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HDFS-8394	Move getAdditionalBlock() and related functionalities into a separate class	Major	.	Haohui Mai	Haohui Mai
HADOOP-11939	Deprecate DistCpV1 and Logalyzer	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-4185	Add a metric for number of active leases	Major	namenode	Kihwal Lee	Rakesh R
HADOOP-1540	Support file exclusion list in distcp	Minor	util	Senthil Subramanian	Rich Haase
HADOOP-11103	Clean up RemoteException	Trivial	ipc	Sean Busbey	Sean Busbey
HDFS-8131	Implement a space balanced block placement policy	Minor	namenode	Liu Shaohui	Liu Shaohui
HADOOP-11970	Replace uses of ThreadLocal<Random> with JDK7 ThreadLocalRandom	Major	.	Sean Busbey	Sean Busbey
HADOOP-11995	Make jetty version configurable from the maven command line	Trivial	build, ld	sriharsha devineni	sriharsha devineni
HDFS-4383	Document the lease limits	Minor	.	Eli Collins	Mohammad Arshad
HADOOP-10366	Add whitespaces between the classes for values in core-default.xml to fit better in browser	Minor	documentation	Chengwei Yang	Kanaka Kumar Avvaru
HADOOP-11594	Improve the readability of site index of documentation	Minor	documentation	Masatake Iwasaki	Masatake Iwasaki
YARN-160	nodemanagers should obtain cpu/memory values from underlying OS	Major	nodemanager	Alejandro Abdelnur	Varun Vasudev
HADOOP-11242	Record the time of calling in tracing span of IPC server	Minor	ipc	Masatake Iwasaki	Masatake Iwasaki
YARN-3722	Merge multiple TestWebAppUtils into o.a.h.yarn.webapp.util.TestWebAppUtils	Minor	test	Masatake Iwasaki	Masatake Iwasaki
HADOOP-11894	Bump the version of Apache HTrace to 3.2.0-incubating	Major	.	Masatake Iwasaki	Masatake Iwasaki
YARN-3489	RMServerUtils.validateResourceRequests should only obtain queue info once	Major	resourcemanager	Jason Lowe	Varun Saxena
HDFS-8443	Document dfs.namenode.service.handler.count in hdfs-site.xml	Major	documentation	Akira Ajisaka	J.Andreina
YARN-3547	FairScheduler: Apps that have no resource demand should not participate scheduling	Major	fairscheduler	Xianyin Xin	Xianyin Xin
YARN-3713	Remove duplicate function call storeContainerDiagnostics in ContainerDiagnosticsUpdateTransition	Minor	nodemanager	zhihai xu	zhihai xu
HADOOP-12043	Display warning if defaultFs is not set when running fs commands.	Minor	fs	Lei (Eddy) Xu	Lei (Eddy) Xu
YARN-3467	Expose allocatedMB, allocatedVCores, and runningContainers metrics on running Applications in RM Web UI	Minor	webapp, yarn	Anthony Rojas	Anubhav Dhoot
HDFS-8490	Typo in trace enabled log in ExceptionHandler of WebHDFS	Trivial	webhdfs	Jakob Homan	Archana T
HDFS-8521	Add @VisibleForTesting annotation to {{BlockPoolSlice#selectReplicaToDelete}}	Trivial	.	Colin P. McCabe	Colin P. McCabe
MAPREDUCE-6174	Combine common stream code into parent class for InMemoryMapOutput and OnDiskMapOutput.	Major	mrv2	Eric Payne	Eric Payne
HDFS-8532	Make the visibility of DFSOutputStream#streamer member variable to private	Trivial	.	Rakesh R	Rakesh R
HDFS-8535	Clarify that dfs usage in dfsadmin -report output includes all block replicas.	Minor	documentation	Lei (Eddy) Xu	Lei (Eddy) Xu
MAPREDUCE-6383	Pi job (QuasiMonteCarlo) should not try to read the results file if its job fails	Major	examples	Harsh J	Harsh J
YARN-3259	FairScheduler: Trigger fairShare updates on node events	Major	fairscheduler	Anubhav Dhoot	Anubhav Dhoot
HADOOP-12059	S3Credentials should support use of CredentialProvider	Major	fs/s3	Sean Busbey	Sean Busbey
MAPREDUCE-6354	ShuffleHandler should be able to log shuffle connections	Major	.	Chang Li	Chang Li
HADOOP-12055	Deprecate usage of NativeIO#link	Major	native	Andrew Wang	Andrew Wang
HDFS-8432	Introduce a minimum compatible layout version to allow downgrade in more rolling upgrade use cases.	Major	namenode, rolling upgrades	Chris Nauroth	Chris Nauroth
HDFS-8116	Cleanup uncessary if LOG.isDebugEnabled() from RollingWindowManager	Trivial	namenode	Xiaoyu Yao	Brahma Reddy Battula
YARN-2716	Refactor ZKRMStateStore retry code with Apache Curator	Major	.	Jian He	Karthik Kambatla
HDFS-8553	Document hdfs class path options	Major	documentation	Xiaoyu Yao	Brahma Reddy Battula
YARN-3786	Document yarn class path options	Major	documentation	Brahma Reddy Battula	Brahma Reddy Battula
MAPREDUCE-6392	Document mapred class path options	Major	documentation	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-8549	Abort the balancer if an upgrade is in progress	Major	balancer & mover	Andrew Wang	Andrew Wang
HDFS-8573	Move creation of restartMeta file logic from BlockReceiver to ReplicaInPipeline	Major	datanode	Lei (Eddy) Xu	Lei (Eddy) Xu
HADOOP-11971	Move test utilities for tracing from hadoop-hdfs to hadoop-common	Minor	tracing	Masatake Iwasaki	Masatake Iwasaki
HDFS-8361	Choose SSD over DISK in block placement	Major	namenode	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
YARN-3789	Improve logs for LeafQueue#activateApplications()	Minor	resourcemanager	Bibin A Chundatt	Bibin A Chundatt
HDFS-8606	Cleanup DFSOutputStream by removing unwanted changes	Minor	hdfs-client	Rakesh R	Rakesh R
YARN-3148	Allow CORS related headers to passthrough in WebAppProxyServlet	Major	.	Prakash Ramachandran	Varun Saxena
HDFS-8589	Fix unused imports in BPServiceActor and BlockReportLeaseManager	Trivial	.	Colin P. McCabe	Colin P. McCabe
HADOOP-7139	Allow appending to existing SequenceFiles	Major	io	Stephen Rose	Kanaka Kumar Avvaru
HDFS-8605	Merge Refactor of DFSOutputStream from HDFS-7285 branch	Major	.	Vinayakumar B	Vinayakumar B
MAPREDUCE-6395	Improve the commit failure messages in MRAppMaster recovery	Major	applicationmaster	Gera Shegalov	Brahma Reddy Battula
HDFS-8582	Support getting a list of reconfigurable config properties and do not generate spurious reconfig warnings	Minor	datanode, hdfs-client	Lei (Eddy) Xu	Lei (Eddy) Xu
MAPREDUCE-6316	Task Attempt List entries should link to the task overview	Major	.	Siqi Li	Siqi Li
MAPREDUCE-6305	AM/Task log page should be able to link back to the job	Major	.	Siqi Li	Siqi Li
YARN-3834	Scrub debug logging of tokens during resource localization.	Major	nodemanager	Chris Nauroth	Chris Nauroth
MAPREDUCE-6408	Queue name and user name should be printed on the job page	Major	applicationmaster	Siqi Li	Siqi Li
HDFS-8639	Option for HTTP port of NameNode by MiniDFSClusterManager	Minor	test	Kai Sasaki	Kai Sasaki
YARN-3360	Add JMX metrics to TimelineDataManager	Major	timelineserver	Jason Lowe	Jason Lowe
HADOOP-12049	Control http authentication cookie persistence via configuration	Major	security	Benoy Antony	Huizhi Lu
HDFS-8462	Implement GETXATTRS and LISTXATTRS operations for WebImageViewer	Major	.	Akira Ajisaka	Jagadesh Kiran N
HDFS-8640	Make reserved RBW space visible through JMX	Major	.	Kanaka Kumar Avvaru	Kanaka Kumar Avvaru
HDFS-8546	Use try with resources in DataStorage and Storage	Minor	datanode	Andrew Wang	Andrew Wang
HADOOP-11807	add a lint mode to releasedocmaker	Minor	build, documentation, yetus	Allen Wittenauer	ramtin
HDFS-8653	Code cleanup for DatanodeManager, DatanodeDescriptor and DatanodeStorageInfo	Major	.	Zhe Zhang	Zhe Zhang
HDFS-8659	Block scanner INFO message is spamming logs	Major	datanode	Yongjun Zhang	Yongjun Zhang
MAPREDUCE-6384	Add the last reporting reducer info for too many fetch failure diagnostics	Major	.	Chang Li	Chang Li
HADOOP-12158	Improve error message in TestCryptoStreamsWithOpensslAesCtrCryptoCodec when OpenSSL is not installed	Trivial	test	Andrew Wang	Andrew Wang
HADOOP-12172	FsShell mkdir -p makes an unnecessary check for the existence of the parent.	Minor	fs	Chris Nauroth	Chris Nauroth
HDFS-8703	Merge refactor of DFSInputStream from ErasureCoding branch	Major	.	Vinayakumar B	Vinayakumar B
HDFS-8709	Clarify automatic sync in FSEditLog#logEdit	Minor	.	Andrew Wang	Andrew Wang
HADOOP-12045	Enable LocalFileSystem#setTimes to change atime	Minor	fs	Kazuho Fujii	Kazuho Fujii
HADOOP-12185	NetworkTopology is not efficient adding/getting/removing nodes	Major	.	Inigo Goiri	Inigo Goiri
HADOOP-12135	cleanup releasedocmaker	Major	yetus	Allen Wittenauer	Allen Wittenauer
HADOOP-12195	Add annotation to package-info.java file to workaround MCOMPILER-205	Trivial	.	Andrew Wang	Andrew Wang
HADOOP-12193	Rename Touchz.java to Touch.java	Trivial	.	Andrew Wang	Andrew Wang
HDFS-8711	setSpaceQuota command should print the available storage type when input storage type is wrong	Major	hdfs-client	Surendra Singh Lilhore	Surendra Singh Lilhore
HDFS-8712	Remove “public” and “abstract” modifiers in FsVolumeSpi and FsDatasetSpi	Trivial	.	Lei (Eddy) Xu	Lei (Eddy) Xu
HADOOP-12194	Support for incremental generation in the protoc plugin	Major	.	Andrew Wang	Andrew Wang
HADOOP-12180	Move ResourceCalculatorPlugin from YARN to Common	Major	util	Chris Douglas	Chris Douglas
HADOOP-12210	Collect network usage on the node	Major	.	Robert Grandl	Robert Grandl
YARN-3069	Document missing properties in yarn-default.xml	Major	documentation	Ray Chiang	Ray Chiang
YARN-3381	Fix typo InvalidStateTransitonException	Minor	api	Xiaoshuang LU	Brahma Reddy Battula
HADOOP-12211	Collect disks usages on the node	Major	.	Robert Grandl	Robert Grandl
HDFS-8722	Optimize datanode writes for small writes and flushes	Critical	.	Kihwal Lee	Kihwal Lee
HADOOP-12232	Upgrade Tomcat dependency to 6.0.44.	Major	build	Chris Nauroth	Chris Nauroth
YARN-3170	YARN architecture document needs updating	Major	documentation	Allen Wittenauer	Brahma Reddy Battula
MAPREDUCE-5762	Port MAPREDUCE-3223 and MAPREDUCE-4695 (Remove MRv1 config from mapred-default.xml) to branch-2	Minor	documentation	Akira Ajisaka	Akira Ajisaka
YARN-3174	Consolidate the NodeManager and NodeManagerRestart documentation into one	Major	documentation	Allen Wittenauer	Masatake Iwasaki
HDFS-7314	When the DFSClient lease cannot be renewed, abort open-for-write files rather than the entire DFSClient	Major	.	Ming Ma	Ming Ma
HADOOP-11893	Mark org.apache.hadoop.security.token.Token as @InterfaceAudience.Public	Major	security	Steve Loughran	Brahma Reddy Battula
HADOOP-12081	Fix UserGroupInformation.java to support 64-bit zLinux	Major	security	Adam Roberts	Akira Ajisaka
HADOOP-12214	Parse ‘HadoopArchive’ commandline using cli Options.	Minor	.	Vinayakumar B	Vinayakumar B
YARN-2921	Fix MockRM/MockAM#waitForState sleep too long	Major	test	Karthik Kambatla	Tsuyoshi Ozawa
HADOOP-12161	Add getStoragePolicy API to the FileSystem interface	Major	fs	Arpit Agarwal	Brahma Reddy Battula
HADOOP-12189	Improve CallQueueManager#swapQueue to make queue elements drop nearly impossible.	Major	ipc, test	zhihai xu	zhihai xu
HADOOP-12009	Clarify FileSystem.listStatus() sorting order & fix FileSystemContractBaseTest:testListStatus	Minor	documentation, fs, test	Jakob Homan	J.Andreina
HADOOP-12259	Utility to Dynamic port allocation	Major	test, util	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-8735	Inotify : All events classes should implement toString() API.	Major	hdfs-client	Surendra Singh Lilhore	Surendra Singh Lilhore
HDFS-7858	Improve HA Namenode Failover detection on the client	Major	hdfs-client	Arun Suresh	Arun Suresh
HDFS-8180	AbstractFileSystem Implementation for WebHdfs	Major	webhdfs	Santhosh G Nayak	Santhosh G Nayak
HDFS-8811	Move BlockStoragePolicy name's constants from HdfsServerConstants.java to HdfsConstants.java	Major	.	Vinayakumar B	Vinayakumar B
HDFS-8822	Add SSD storagepolicy tests in TestBlockStoragePolicy#testDefaultPolicies	Major	.	Vinayakumar B	Vinayakumar B
YARN-3950	Add unique YARN_SHELL_ID environment variable to DistributedShell	Major	applications/distributed-shell	Robert Kanter	Robert Kanter
YARN-2768	Avoid cloning Resource in FSAppAttempt#updateDemand	Minor	fairscheduler	Hong Zhiguo	Hong Zhiguo
HDFS-8816	Improve visualization for the Datanode tab in the NN UI	Major	.	Haohui Mai	Haohui Mai
HDFS-8821	Explain message “Operation category X is not supported in state standby”	Minor	.	Gautam Gopalakrishnan	Gautam Gopalakrishnan
HADOOP-12271	Hadoop Jar Error Should Be More Explanatory	Minor	.	Jesse Anderson	Josh Elser
HADOOP-12183	Annotate the HTrace span created by FsShell with the command-line arguments passed by the user	Minor	tracing	Masatake Iwasaki	Masatake Iwasaki
YARN-3978	Configurably turn off the saving of container info in Generic AHS	Major	timelineserver, yarn	Eric Payne	Eric Payne
YARN-3965	Add startup timestamp to nodemanager UI	Minor	nodemanager	Hong Zhiguo	Hong Zhiguo
HADOOP-12280	Skip unit tests based on maven profile rather than NativeCodeLoader.isNativeCodeLoaded	Minor	test	Masatake Iwasaki	Masatake Iwasaki
HDFS-8815	DFS getStoragePolicy implementation using single RPC call	Major	hdfs-client	Arpit Agarwal	Surendra Singh Lilhore
YARN-3961	Expose pending, running and reserved containers of a queue in REST api and yarn top	Major	capacityscheduler, fairscheduler, webapp	Anubhav Dhoot	Anubhav Dhoot
YARN-4019	Add JvmPauseMonitor to ResourceManager and NodeManager	Major	nodemanager, resourcemanager	Robert Kanter	Robert Kanter
MAPREDUCE-6443	Add JvmPauseMonitor to Job History Server	Major	jobhistoryserver	Robert Kanter	Robert Kanter
HDFS-8887	Expose storage type and storage ID in BlockLocation	Major	.	Andrew Wang	Andrew Wang
HADOOP-12318	Expose underlying LDAP exceptions in SaslPlainServer	Minor	security	Mike Yoder	Mike Yoder
HADOOP-12295	Improve NetworkTopology#InnerNode#remove logic	Major	.	Yi Liu	Yi Liu
HDFS-7649	Multihoming docs should emphasize using hostnames in configurations	Major	documentation	Arpit Agarwal	Brahma Reddy Battula
YARN-4055	Report node resource utilization in heartbeat	Major	nodemanager	Inigo Goiri	Inigo Goiri
HDFS-8713	Convert DatanodeDescriptor to use SLF4J logging	Trivial	.	Andrew Wang	Andrew Wang
HDFS-8883	NameNode Metrics : Add FSNameSystem lock Queue Length	Major	namenode	Anu Engineer	Anu Engineer
HDFS-6407	Add sorting and pagination in the datanode tab of the NN Web UI	Critical	namenode	Nathan Roberts	Haohui Mai
HDFS-8880	NameNode metrics logging	Major	namenode	Arpit Agarwal	Arpit Agarwal
YARN-4057	If ContainersMonitor is not enabled, only print related log info one time	Minor	nodemanager	Jun Gong	Jun Gong
HADOOP-12050	Enable MaxInactiveInterval for hadoop http auth token	Major	security	Benoy Antony	Huizhi Lu
HDFS-8435	Support CreateFlag in WebHdfs	Major	webhdfs	Vinoth Sathappan	Jakob Homan
HDFS-8911	NameNode Metric : Add Editlog counters as a JMX metric	Major	namenode	Anu Engineer	Anu Engineer
HDFS-8917	Cleanup BlockInfoUnderConstruction from comments and tests	Minor	namenode	Zhe Zhang	Zhe Zhang
HDFS-8884	Fail-fast check in BlockPlacementPolicyDefault#chooseTarget	Major	.	Yi Liu	Yi Liu
HDFS-8828	Utilize Snapshot diff report to build diff copy list in distcp	Major	distcp, snapshots	Yufei Gu	Yufei Gu
HDFS-8924	Add pluggable interface for reading replicas in DFSClient	Major	hdfs-client	Colin P. McCabe	Colin P. McCabe
HDFS-8928	Improvements for BlockUnderConstructionFeature: ReplicaUnderConstruction as a separate class and replicas as an array	Minor	namenode	Zhe Zhang	Jing Zhao
HDFS-2390	dfsadmin -setBalancerBandwidth doesnot validate -ve value	Minor	balancer & mover	Rajit Saha	Gautam Gopalakrishnan
HDFS-8865	Improve quota initialization performance	Major	.	Kihwal Lee	Kihwal Lee
HDFS-8983	NameNode support for protected directories	Major	namenode	Arpit Agarwal	Arpit Agarwal
HDFS-8946	Improve choosing datanode storage for block placement	Major	namenode	Yi Liu	Yi Liu
HDFS-8965	Harden edit log reading code against out of memory errors	Major	.	Colin P. McCabe	Colin P. McCabe
HADOOP-12368	Mark ViewFileSystemBaseTest and ViewFsBaseTest as abstract	Trivial	.	Andrew Wang	Andrew Wang
HADOOP-12367	Move TestFileUtil's test resources to resources folder	Minor	.	Andrew Wang	Andrew Wang
HADOOP-12369	Point hadoop-project/pom.xml java.security.krb5.conf within target folder	Minor	.	Andrew Wang	Andrew Wang
HDFS-328	Improve fs -setrep error message for invalid replication factors	Major	namenode	Tsz Wo Nicholas Sze	Daniel Templeton
HADOOP-5323	Trash documentation should describe its directory structure and configurations	Minor	documentation	Suman Sehgal	Weiwei Yang
HDFS-9021	Use a yellow elephant rather than a blue one in diagram	Minor	.	Andrew Wang	Andrew Wang
HADOOP-12358	Add -safely flag to rm to prompt when deleting many files	Major	fs	Xiaoyu Yao	Xiaoyu Yao
YARN-4024	YARN RM should avoid unnecessary resolving IP when NMs doing heartbeat	Major	resourcemanager	Wangda Tan	Hong Zhiguo
HADOOP-12384	Add “-direct” flag option for fs copy so that user can choose not to create “._COPYING_” file	Major	fs	Chen He	J.Andreina
HDFS-9019	Adding informative message to sticky bit permission denied exception	Minor	security	Thejas M Nair	Xiaoyu Yao
HDFS-8384	Allow NN to startup if there are files having a lease but are not under construction	Minor	namenode	Tsz Wo Nicholas Sze	Jing Zhao
HDFS-8929	Add a metric to expose the timestamp of the last journal	Major	journal-node	Akira Ajisaka	Surendra Singh Lilhore
HDFS-7116	Add a command to get the balancer bandwidth	Major	balancer & mover	Akira Ajisaka	Rakesh R
YARN-4086	Allow Aggregated Log readers to handle HAR files	Major	.	Robert Kanter	Robert Kanter
HDFS-8974	Convert docs in xdoc format to markdown	Minor	documentation	Masatake Iwasaki	Masatake Iwasaki
YARN-4145	Make RMHATestBase abstract so its not run when running all tests under that namespace	Minor	.	Anubhav Dhoot	Anubhav Dhoot
HADOOP-12324	Better exception reporting in SaslPlainServer	Minor	security	Mike Yoder	Mike Yoder
YARN-2005	Blacklisting support for scheduling AMs	Major	resourcemanager	Jason Lowe	Anubhav Dhoot
HDFS-8829	Make SO_RCVBUF and SO_SNDBUF size configurable for DataTransferProtocol sockets and allow configuring auto-tuning	Major	datanode	He Tianyi	He Tianyi
HDFS-9065	Include commas on # of files, blocks, total filesystem objects in NN Web UI	Minor	namenode	Daniel Templeton	Daniel Templeton
HADOOP-12413	AccessControlList should avoid calling getGroupNames in isUserInList with empty groups.	Major	security	zhihai xu	zhihai xu
HDFS-8953	DataNode Metrics logging	Major	.	Kanaka Kumar Avvaru	Kanaka Kumar Avvaru
YARN-4158	Remove duplicate close for LogWriter in AppLogAggregatorImpl#uploadLogsForContainers	Minor	nodemanager	zhihai xu	zhihai xu
YARN-4149	yarn logs -am should provide an option to fetch all the log files	Major	client, nodemanager	Varun Vasudev	Varun Vasudev
HDFS-9082	Change the log level in WebHdfsFileSystem.initialize() from INFO to DEBUG	Minor	webhdfs	Santhosh G Nayak	Santhosh G Nayak
YARN-4135	Improve the assertion message in MockRM while failing after waiting for the state.	Trivial	.	nijel	nijel
MAPREDUCE-6478	Add an option to skip cleanupJob stage or ignore cleanup failure during commitJob().	Major	.	Junping Du	Junping Du
HADOOP-12404	Disable caching for JarURLConnection to avoid sharing JarFile with other users when loading resource from URL in Configuration class.	Minor	conf	zhihai xu	zhihai xu
HADOOP-12428	Fix inconsistency between log-level guards and statements	Minor	.	Jackie Chang	Jagadesh Kiran N
YARN-4095	Avoid sharing AllocatorPerContext object in LocalDirAllocator between ShuffleHandler and LocalDirsHandlerService.	Major	nodemanager	zhihai xu	zhihai xu
HDFS-5795	RemoteBlockReader2#checkSuccess() shoud print error status	Trivial	.	Brandon Li	Xiao Chen
HDFS-9112	Improve error message for Haadmin when multiple name service IDs are configured	Major	tools	Anu Engineer	Anu Engineer
HDFS-9132	Pass genstamp to ReplicaAccessorBuilder	Major	hdfs-client	Colin P. McCabe	Colin P. McCabe
HDFS-8873	Allow the directoryScanner to be rate-limited	Major	datanode	Nathan Roberts	Daniel Templeton
HADOOP-12442	Display help if the command option to "hdfs dfs " is not valid	Minor	.	nijel	nijel
HADOOP-11984	Enable parallel JUnit tests in pre-commit.	Major	build, scripts, test	Chris Nauroth	Chris Nauroth
MAPREDUCE-6471	Document distcp incremental copy	Major	distcp	Arpit Agarwal	Neelesh Srinivas Salian
HDFS-9148	Incorrect assert message in TestWriteToReplica#testWriteToTemporary	Trivial	test	Tony Wu	Tony Wu
HDFS-8859	Improve DataNode ReplicaMap memory footprint to save about 45%	Major	datanode	Yi Liu	Yi Liu
HDFS-8696	Make the lower and higher watermark in the DN Netty server configurable	Major	webhdfs	Xiaobing Zhou	Xiaobing Zhou
YARN-3727	For better error recovery, check if the directory exists before using it for localization.	Major	nodemanager	zhihai xu	zhihai xu
HDFS-9175	Change scope of ‘AccessTokenProvider.getAccessToken()’ and ‘CredentialBasedAccessTokenProvider.getCredential()’ abstract methods to public	Major	webhdfs	Santhosh G Nayak	Santhosh G Nayak
HADOOP-12458	Retries is typoed to spell Retires in parts of hadoop-yarn and hadoop-common	Minor	documentation	Neelesh Srinivas Salian	Neelesh Srinivas Salian
HDFS-9151	Mover should print the exit status/reason on console like balancer tool.	Minor	balancer & mover	Archana T	Surendra Singh Lilhore
HADOOP-12350	WASB Logging: Improve WASB Logging around deletes, reads and writes	Major	tools	Dushyanth	Dushyanth
HADOOP-12284	UserGroupInformation doAs can throw misleading exception	Trivial	security	Aaron Dossett	Aaron Dossett
YARN-4228	FileSystemRMStateStore use IOUtils#close instead of fs#close	Minor	.	Bibin A Chundatt	Bibin A Chundatt
YARN-3943	Use separate threshold configurations for disk-full detection and disk-not-full detection.	Critical	nodemanager	zhihai xu	zhihai xu
MAPREDUCE-6479	Add missing mapred job command options in mapreduce document	Major	documentation	nijel	nijel
HADOOP-11104	org.apache.hadoop.metrics2.lib.MetricsRegistry needs numerical parameter checking	Minor	.	Ray Chiang	Ray Chiang
HDFS-9181	Better handling of exceptions thrown during upgrade shutdown	Minor	.	Wei-Chiu Chuang	Wei-Chiu Chuang
HDFS-9110	Use Files.walkFileTree in NNUpgradeUtil#doPreUpgrade for better efficiency	Minor	.	Charlie Helin	Charlie Helin
HDFS-9221	HdfsServerConstants#ReplicaState#getState should avoid calling values() since it creates a temporary array	Major	performance	Staffan Friberg	Staffan Friberg
HDFS-8988	Use LightWeightHashSet instead of LightWeightLinkedSet in BlockManager#excessReplicateMap	Major	.	Yi Liu	Yi Liu
HDFS-9139	Enable parallel JUnit tests for HDFS Pre-commit	Major	test	Vinayakumar B	Vinayakumar B
HDFS-9145	Tracking methods that hold FSNamesytemLock for too long	Major	namenode	Jing Zhao	Mingliang Liu
HADOOP-10775	Shell operations to fail with meaningful errors on windows if winutils.exe not found	Minor	util	Steve Loughran	Steve Loughran
YARN-4253	Standardize on using PrivilegedOperationExecutor for all invocations of container-executor in LinuxContainerExecutor	Major	.	Sidharta Seethana	Sidharta Seethana
YARN-4252	Log container-executor invocation details when exit code is non-zero	Minor	nodemanager	Sidharta Seethana	Sidharta Seethana
HDFS-9238	Update TestFileCreation#testLeaseExpireHardLimit() to avoid using DataNodeTestUtils#getFile()	Trivial	test	Tony Wu	Tony Wu
HDFS-9188	Make block corruption related tests FsDataset-agnostic.	Major	test	Lei (Eddy) Xu	Lei (Eddy) Xu
HDFS-9205	Do not schedule corrupt blocks for replication	Minor	namenode	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HADOOP-12481	JWTRedirectAuthenticationHandler doesn't Retain Original Query String	Major	security	Larry McCay	Larry McCay
HDFS-9257	improve error message for “Absolute path required” in INode.java to contain the rejected path	Trivial	namenode	Marcell Szabo	Marcell Szabo
HDFS-9253	Refactor tests of libhdfs into a directory	Major	.	Haohui Mai	Haohui Mai
HADOOP-12450	UserGroupInformation should not log at WARN level if no groups are found	Minor	security	Elliott Clark	Elliott Clark
HADOOP-12460	Add overwrite option for ‘get’ shell command	Major	.	Keegan Witt	Jagadesh Kiran N
HDFS-9250	Add Precondition check to LocatedBlock#addCachedLoc	Major	namenode	Xiao Chen	Xiao Chen
HDFS-9251	Refactor TestWriteToReplica and TestFsDatasetImpl to avoid explicitly creating Files in tests code.	Major	test	Lei (Eddy) Xu	Lei (Eddy) Xu
MAPREDUCE-6489	Fail fast rogue tasks that write too much to local disk	Major	task	Maysam Yabandeh	Maysam Yabandeh
HDFS-8647	Abstract BlockManager's rack policy into BlockPlacementPolicy	Major	.	Ming Ma	Brahma Reddy Battula
HDFS-7087	Ability to list /.reserved	Major	.	Andrew Wang	Xiao Chen
HDFS-9280	Document NFS gateway export point parameter	Trivial	documentation	Zhe Zhang	Xiao Chen
HADOOP-12334	Change Mode Of Copy Operation of HBase WAL Archiving to bypass Azure Storage Throttling after retries	Major	tools	Gaurav Kanade	Gaurav Kanade
HADOOP-7266	Deprecate metrics v1	Blocker	metrics	Luke Lu	Akira Ajisaka
YARN-2913	Fair scheduler should have ability to set MaxResourceDefault for each queue	Major	.	Siqi Li	Siqi Li
HDFS-9264	Minor cleanup of operations on FsVolumeList#volumes	Minor	.	Walter Su	Walter Su
HDFS-8808	dfs.image.transfer.bandwidthPerSec should not apply to -bootstrapStandby	Major	.	Gautam Gopalakrishnan	Zhe Zhang
HDFS-9297	Update TestBlockMissingException to use corruptBlockOnDataNodesByDeletingBlockFile()	Trivial	test	Tony Wu	Tony Wu
HDFS-4015	Safemode should count and report orphaned blocks	Major	namenode	Todd Lipcon	Anu Engineer
YARN-3528	Tests with 12345 as hard-coded port break jenkins	Blocker	.	Steve Loughran	Brahma Reddy Battula
YARN-4285	Display resource usage as percentage of queue and cluster in the RM UI	Major	resourcemanager	Varun Vasudev	Varun Vasudev
HDFS-7284	Add more debug info to BlockInfoUnderConstruction#setGenerationStampAndVerifyReplicas	Major	namenode	Hu Liu,	Wei-Chiu Chuang
HADOOP-12472	Make GenericTestUtils.assertExceptionContains robust	Minor	test	Steve Loughran	Steve Loughran
HDFS-9291	Fix TestInterDatanodeProtocol to be FsDataset-agnostic.	Minor	test	Lei (Eddy) Xu	Lei (Eddy) Xu
HDFS-8945	Update the description about replica placement in HDFS Architecture documentation	Minor	documentation	Masatake Iwasaki	Masatake Iwasaki
HDFS-9292	Make TestFileConcorruption independent to underlying FsDataset Implementation.	Minor	.	Lei (Eddy) Xu	Lei (Eddy) Xu
HDFS-9259	Make SO_SNDBUF size configurable at DFSClient side for hdfs write scenario	Major	.	Ming Ma	Mingliang Liu
HDFS-9299	Give ReplicationMonitor a readable thread name	Trivial	namenode	Staffan Friberg	Staffan Friberg
HDFS-9307	fuseConnect should be private to fuse_connect.c	Trivial	fuse-dfs	Colin P. McCabe	Mingliang Liu
HADOOP-12520	Use XInclude in hadoop-azure test configuration to isolate Azure Storage account keys for service integration tests.	Major	fs/azure, test	Chris Nauroth	Chris Nauroth
HDFS-9311	Support optional offload of NameNode HA service health checks to a separate RPC server.	Major	ha, namenode	Chris Nauroth	Chris Nauroth
HDFS-9255	Consolidate block recovery related implementation into a single class	Minor	datanode	Walter Su	Walter Su
YARN-2573	Integrate ReservationSystem with the RM failover mechanism	Major	capacityscheduler, fairscheduler, resourcemanager	Subru Krishnan	Subru Krishnan
HDFS-6200	Create a separate jar for hdfs-client	Major	build	Haohui Mai	Haohui Mai
HDFS-8545	Refactor FS#getUsed() to use ContentSummary and add an API to fetch the total file length from a specific path	Minor	.	J.Andreina	J.Andreina
HDFS-9229	Expose size of NameNode directory as a metric	Minor	namenode	Zhe Zhang	Surendra Singh Lilhore
YARN-4310	FairScheduler: Log skipping reservation messages at DEBUG level	Minor	fairscheduler	Arun Suresh	Arun Suresh
HDFS-9312	Fix TestReplication to be FsDataset-agnostic.	Minor	.	Lei (Eddy) Xu	Lei (Eddy) Xu
HDFS-9308	Add truncateMeta() and deleteMeta() to MiniDFSCluster	Minor	test	Tony Wu	Tony Wu
HDFS-9331	Modify TestNameNodeMXBean#testNameNodeMXBeanInfo() to account for filesystem entirely allocated for DFS use	Trivial	test	Tony Wu	Tony Wu
HDFS-9363	Add fetchReplica() to FsDatasetTestUtils to return FsDataset-agnostic Replica.	Minor	test	Tony Wu	Tony Wu
HDFS-9282	Make data directory count and storage raw capacity related tests FsDataset-agnostic	Minor	test	Tony Wu	Tony Wu
HADOOP-12344	Improve validateSocketPathSecurity0 error message	Trivial	net	Casey Brotherton	Casey Brotherton
HDFS-9398	Make ByteArraryManager log message in one-line format	Minor	hdfs-client	Mingliang Liu	Mingliang Liu
HDFS-9234	WebHdfs : getContentSummary() should give quota for storage types	Major	webhdfs	Surendra Singh Lilhore	Surendra Singh Lilhore
HDFS-9369	Use ctest to run tests for hadoop-hdfs-native-client	Minor	.	Haohui Mai	Haohui Mai
HADOOP-12562	Make hadoop dockerfile usable by Yetus	Major	build	Allen Wittenauer	Allen Wittenauer
YARN-4287	Capacity Scheduler: Rack Locality improvement	Major	capacityscheduler	Nathan Roberts	Nathan Roberts
MAPREDUCE-5485	Allow repeating job commit by extending OutputCommitter API	Critical	.	Nemon Lou	Junping Du
MAPREDUCE-6499	Add elapsed time for retired job in JobHistoryServer WebUI	Major	webapps	Yiqun Lin	Yiqun Lin
HDFS-9252	Change TestFileTruncate to use FsDatasetTestUtils to get block file size and genstamp.	Major	.	Lei (Eddy) Xu	Lei (Eddy) Xu
HADOOP-12568	Update core-default.xml to describe posixGroups support	Minor	documentation	Wei-Chiu Chuang	Wei-Chiu Chuang
YARN-4279	Mark ApplicationId and ApplicationAttemptId static methods as @Public, @Unstable	Minor	client	Steve Loughran	Steve Loughran
HADOOP-12575	Add build instruction for docker toolbox instead of boot2docker	Trivial	documentation	Kai Sasaki	Kai Sasaki
HDFS-8056	Decommissioned dead nodes should continue to be counted as dead after NN restart	Major	.	Ming Ma	Ming Ma
HADOOP-11901	BytesWritable fails to support 2G chunks due to integer overflow	Major	.	Reynold Xin	Reynold Xin
HDFS-9439	Include status of closeAck into exception message in DataNode#run	Trivial	.	Xiao Chen	Xiao Chen
HDFS-9402	Switch DataNode.LOG to use slf4j	Minor	.	Walter Su	Walter Su
HDFS-3302	Review and improve HDFS trash documentation	Major	documentation	Harsh J
HADOOP-10035	Cleanup TestFilterFileSystem	Major	.	Suresh Srinivas	Suresh Srinivas
HADOOP-10555	Add offset support to MurmurHash	Trivial	.	Sergey Shelukhin	Sergey Shelukhin
HADOOP-10068	Improve log4j regex in testFindContainingJar	Trivial	.	Robert Rati	Robert Rati
HDFS-9024	Deprecate the TotalFiles metric	Major	.	Akira Ajisaka	Akira Ajisaka
HDFS-7988	Replace usage of ExactSizeInputStream with LimitInputStream.	Minor	.	Chris Nauroth	Walter Su
HDFS-9314	Improve BlockPlacementPolicyDefault's picking of excess replicas	Major	.	Ming Ma	Xiao Chen
MAPREDUCE-5870	Support for passing Job priority through Application Submission Context in Mapreduce Side	Major	client	Sunil G	Sunil G
HDFS-9434	Recommission a datanode with 500k blocks may pause NN for 30 seconds	Major	namenode	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
YARN-4132	Separate configs for nodemanager to resourcemanager connection timeout and retries	Major	nodemanager	Chang Li	Chang Li
HDFS-8512	WebHDFS : GETFILESTATUS should return LocatedBlock with storage type info	Major	webhdfs	Sumana Sathish	Xiaoyu Yao
HADOOP-12600	FileContext and AbstractFileSystem should be annotated as a Stable interface.	Blocker	fs	Chris Nauroth	Chris Nauroth
HDFS-9269	Update the documentation and wrapper for fuse-dfs	Minor	fuse-dfs	Wei-Chiu Chuang	Wei-Chiu Chuang
HDFS-9485	Make BlockManager#removeFromExcessReplicateMap accept BlockInfo instead of Block	Minor	namenode	Mingliang Liu	Mingliang Liu
HDFS-9490	MiniDFSCluster should change block generation stamp via FsDatasetTestUtils	Minor	test	Tony Wu	Tony Wu
HDFS-8831	Trash Support for deletion in HDFS encryption zone	Major	encryption	Xiaoyu Yao	Xiaoyu Yao
HDFS-9474	TestPipelinesFailover should not fail when printing debug message	Major	.	Yongjun Zhang	John Zhuge
YARN-3456	Improve handling of incomplete TimelineEntities	Minor	timelineserver	Steve Loughran	Varun Saxena
HDFS-9527	The return type of FSNamesystem.getBlockCollection should be changed to INodeFile	Minor	namenode	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HDFS-9472	concat() API does not give proper exception messages on ./reserved relative path	Major	namenode	Rakesh R	Rakesh R
HDFS-9532	Detailed exception info is lost in reportTo method of ErrorReportAction and ReportBadBlockAction	Trivial	datanode	Yongjun Zhang	Yongjun Zhang
HDFS-9528	Cleanup namenode audit/log/exception messages	Minor	namenode	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HDFS-8860	Remove unused Replica copyOnWrite code	Major	.	Lei (Eddy) Xu	Lei (Eddy) Xu
MAPREDUCE-6436	JobHistory cache issue	Blocker	.	Ryu Kobayashi	Kai Sasaki
HADOOP-12639	Imrpove JavaDoc for getTrimmedStrings	Trivial	util	BELUGA BEHR	BELUGA BEHR
HDFS-9557	Reduce object allocation in PB conversion	Major	hdfs-client	Daryn Sharp	Daryn Sharp
YARN-4207	Add a non-judgemental YARN app completion status	Major	.	Sergey Shelukhin	Rich Haase
HDFS-9198	Coalesce IBR processing in the NN	Major	namenode	Daryn Sharp	Daryn Sharp
HDFS-9552	Document types of permission checks performed for HDFS operations.	Major	documentation	Chris Nauroth	Chris Nauroth
HADOOP-12570	HDFS Secure Mode Documentation updates	Major	documentation	Arpit Agarwal	Arpit Agarwal
YARN-4480	Clean up some inappropriate imports	Major	.	Kai Zheng	Kai Zheng
YARN-4290	Add -showDetails option to YARN Nodes CLI to print all nodes reports information	Major	client	Wangda Tan	Sunil G
YARN-4400	AsyncDispatcher.waitForDrained should be final	Trivial	yarn	Daniel Templeton	Daniel Templeton
MAPREDUCE-6584	Remove trailing whitespaces from mapred-default.xml	Major	documentation	Akira Ajisaka	Akira Ajisaka
HADOOP-12686	Update FileSystemShell documentation to mention the meaning of each columns of fs -du	Minor	documentation, fs	Daisuke Kobayashi	Daisuke Kobayashi
YARN-4544	All the log messages about rolling monitoring interval are shown with WARN level	Minor	log-aggregation, nodemanager	Takashi Ohnishi	Takashi Ohnishi
YARN-4438	Implement RM leader election with curator	Major	.	Jian He	Jian He
HDFS-9630	DistCp minor refactoring and clean up	Minor	distcp	Kai Zheng	Kai Zheng
YARN-4582	Label-related invalid resource request exception should be able to properly handled by application	Major	scheduler	Bibin A Chundatt	Bibin A Chundatt
HDFS-9569	Log the name of the fsimage being loaded for better supportability	Trivial	namenode	Yongjun Zhang	Yongjun Zhang
MAPREDUCE-6473	Job submission can take a long time during Cluster initialization	Major	performance	Kuhu Shukla	Kuhu Shukla
HDFS-9415	Document dfs.cluster.administrators and dfs.permissions.superusergroup	Major	documentation	Arpit Agarwal	Xiaobing Zhou
HDFS-6054	MiniQJMHACluster should not use static port to avoid binding failure in unit test	Major	test	Brandon Li	Yongjun Zhang
YARN-4492	Add documentation for preemption supported in Capacity scheduler	Minor	capacity scheduler	Naganarasimha G R	Naganarasimha G R
YARN-4371	“yarn application -kill” should take multiple application ids	Major	.	Tsuyoshi Ozawa	Sunil G
HDFS-9653	Expose the number of blocks pending deletion through dfsadmin report command	Major	hdfs-client, tools	Weiwei Yang	Weiwei Yang
HADOOP-12731	Remove useless boxing/unboxing code	Minor	performance	Kousuke Saruta	Kousuke Saruta
HDFS-9654	Code refactoring for HDFS-8578	Minor	datanode	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HDFS-9706	Log more details in debug logs in BlockReceiver's constructor	Minor	.	Xiao Chen	Xiao Chen
HDFS-9638	Improve DistCp Help and documentation	Minor	distcp	Wei-Chiu Chuang	Wei-Chiu Chuang
HDFS-9566	Remove expensive ‘BlocksMap#getStorages(Block b, final DatanodeStorage.State state)’ method	Major	namenode	Daryn Sharp	Daryn Sharp
HDFS-9721	Allow Delimited PB OIV tool to run upon fsimage that contains INodeReference	Major	.	Xiao Chen	Xiao Chen
HDFS-9669	TcpPeerServer should respect ipc.server.listen.queue.size	Major	.	Elliott Clark	Elliott Clark
HDFS-9715	Check storage ID uniqueness on datanode startup	Major	datanode	Lei (Eddy) Xu	Lei (Eddy) Xu
YARN-4662	Document some newly added metrics	Major	.	Jian He	Jian He
HDFS-9629	Update the footer of Web UI to show year 2016	Major	.	Xiao Chen	Xiao Chen
MAPREDUCE-6566	Add retry support to mapreduce CLI tool	Major	.	Varun Vasudev	Varun Vasudev
HDFS-9726	Refactor IBR code to a new class	Minor	datanode	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HADOOP-12772	NetworkTopologyWithNodeGroup.getNodeGroup() can loop infinitely for invalid ‘loc’ values	Minor	.	Kuhu Shukla	Kuhu Shukla
HADOOP-12758	Extend CSRF Filter with UserAgent Checks	Major	security	Larry McCay	Larry McCay
HDFS-9686	Remove useless boxing/unboxing code	Minor	performance	Kousuke Saruta	Kousuke Saruta
MAPREDUCE-6626	Reuse ObjectMapper instance in MapReduce	Minor	performance	Yiqun Lin	Yiqun Lin
HADOOP-12788	OpensslAesCtrCryptoCodec should log which random number generator is used.	Minor	.	Wei-Chiu Chuang	Wei-Chiu Chuang
HADOOP-12764	Increase default value of KMS maxHttpHeaderSize and make it configurable	Minor	.	Zhe Zhang	Zhe Zhang
HADOOP-12776	Remove getaclstatus call for non-acl commands in getfacl.	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-9768	Reuse objectMapper instance in HDFS to improve the performance	Major	performance	Yiqun Lin	Yiqun Lin
HDFS-9644	Update encryption documentation to reflect nested EZs	Major	documentation, encryption	Zhe Zhang	Zhe Zhang
HDFS-9700	DFSClient and DFSOutputStream should set TCP_NODELAY on sockets for DataTransferProtocol	Major	hdfs-client	Gary Helmling	Gary Helmling
HDFS-9797	Log Standby exceptions thrown by RequestHedgingProxyProvider at DEBUG Level	Minor	hdfs-client	Inigo Goiri	Inigo Goiri
YARN-4682	AMRM client to log when AMRM token updated	Major	client	Steve Loughran	Prabhu Joseph
HADOOP-12805	Annotate CanUnbuffer with @InterfaceAudience.Public	Major	.	Ted Yu	Ted Yu
YARN-4690	Skip object allocation in FSAppAttempt#getResourceUsage when possible	Major	.	Ming Ma	Ming Ma
HADOOP-10865	Add a Crc32 chunked verification benchmark for both directly and non-directly buffer cases	Minor	util	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HDFS-4946	Allow preferLocalNode in BlockPlacementPolicyDefault to be configurable	Major	namenode	James Kinley	Nathan Roberts
HADOOP-11031	Design Document for Credential Provider API	Major	site	Larry McCay	Larry McCay
HADOOP-12828	Print user when services are started	Trivial	.	Brandon Li	Wei-Chiu Chuang
HADOOP-12794	Support additional compression levels for GzipCodec	Major	io	Ravi Mutyala	Ravi Mutyala
HDFS-9425	Expose number of blocks per volume as a metric	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-12668	Support excluding weak Ciphers in HttpServer2 through ssl-server.conf	Critical	security	Vijay Singh	Vijay Singh
HADOOP-12555	WASB to read credentials from a credential provider	Minor	fs/azure	Chris Nauroth	Larry McCay
HDFS-8578	On upgrade, Datanode should process all storage/data dirs in parallel	Critical	datanode	Raju Bairishetti	Vinayakumar B
HADOOP-12535	Run FileSystem contract tests with hadoop-azure.	Major	fs/azure, test	Chris Nauroth	madhumita chakraborty
HDFS-9854	Log cipher suite negotiation more verbosely	Major	encryption	Wei-Chiu Chuang	Wei-Chiu Chuang
HDFS-9843	Document distcp options required for copying between encrypted locations	Major	distcp, documentation, encryption	Xiaoyu Yao	Xiaoyu Yao
HADOOP-12824	Collect network and disk usage on the node running Windows	Major	.	Inigo Goiri	Inigo Goiri
YARN-4720	Skip unnecessary NN operations in log aggregation	Major	.	Ming Ma	Jun Gong
HDFS-9831	Document webhdfs retry configuration keys introduced by HDFS-5219/HDFS-5122	Major	documentation, webhdfs	Xiaoyu Yao	Xiaobing Zhou
HDFS-9710	Change DN to send block receipt IBRs in batches	Major	datanode	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
MAPREDUCE-6622	Add capability to set JHS job cache to a task-based limit	Critical	jobhistoryserver	Ray Chiang	Ray Chiang
HADOOP-12825	Log slow name resolutions	Major	.	Sidharta Seethana	Sidharta Seethana
YARN-4671	There is no need to acquire CS lock when completing a container	Major	.	MENG DING	MENG DING
HADOOP-12853	Change WASB documentation regarding page blob support	Minor	fs/azure	madhumita chakraborty	madhumita chakraborty
HDFS-9887	WebHdfs socket timeouts should be configurable	Major	fs, webhdfs	Austin Donnelly	Austin Donnelly
HADOOP-12859	Disable hiding field style checks in class setters	Major	.	Kai Zheng	Kai Zheng
HDFS-9534	Add CLI command to clear storage policy from a path.	Major	tools	Chris Nauroth	Xiaobing Zhou
HADOOP-12793	Write a new group mapping service guide	Major	documentation	Wei-Chiu Chuang	Wei-Chiu Chuang
HADOOP-12470	In-page TOC of documentation should be automatically generated by doxia macro	Major	documentation	Masatake Iwasaki	Masatake Iwasaki
HDFS-9889	Update balancer/mover document about HDFS-6133 feature	Minor	.	Yongjun Zhang	Yongjun Zhang
MAPREDUCE-6648	Add yarn.app.mapreduce.am.log.level to mapred-default.xml	Trivial	documentation	Harsh J	Harsh J
HDFS-9906	Remove spammy log spew when a datanode is restarted	Major	namenode	Elliott Clark	Brahma Reddy Battula
HADOOP-12901	Add warning log when KMSClientProvider cannot create a connection to the KMS server	Minor	.	Xiao Chen	Xiao Chen
HADOOP-12789	log classpath of ApplicationClassLoader at INFO level	Minor	util	Sangjin Lee	Sangjin Lee
HDFS-9882	Add heartbeatsTotal in Datanode metrics	Minor	datanode	Hua Liu	Hua Liu
HADOOP-12860	Expand section “Data Encryption on HTTP” in SecureMode documentation	Minor	.	Wei-Chiu Chuang	Wei-Chiu Chuang
YARN-4465	SchedulerUtils#validateRequest for Label check should happen only when nodelabel enabled	Minor	.	Bibin A Chundatt	Bibin A Chundatt
HADOOP-12904	Update Yetus to 0.2.0	Blocker	build	Allen Wittenauer	Allen Wittenauer
HADOOP-12798	Update changelog and release notes (2016-03-04)	Major	documentation	Allen Wittenauer	Allen Wittenauer
HADOOP-12905	Clean up CHANGES.txt RAT exclusions from pom.xml files.	Trivial	build	Chris Nauroth	Chris Nauroth
HDFS-9927	Document the new OIV ReverseXML processor	Minor	documentation	Wei-Chiu Chuang	Wei-Chiu Chuang
HDFS-9942	Add an HTrace span when refreshing the groups for a username	Major	.	Colin P. McCabe	Colin P. McCabe
HDFS-9941	Do not log StandbyException on NN, other minor logging fixes	Major	namenode	Arpit Agarwal	Arpit Agarwal
HADOOP-12923	Move the test code in ipc.Client to test	Minor	ipc	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HDFS-9405	Warmup NameNode EDEK caches in background thread	Major	encryption, namenode	Zhe Zhang	Xiao Chen
HDFS-9951	Use string constants for XML tags in OfflineImageReconstructor	Minor	.	Yiqun Lin	Yiqun Lin
HADOOP-12947	Update documentation Hadoop Groups Mapping to add static group mapping, negative cache	Minor	documentation, security	Wei-Chiu Chuang	Wei-Chiu Chuang
YARN-4117	End to end unit test with mini YARN cluster for AMRMProxy Service	Major	nodemanager, resourcemanager	Kishore Chaliparambil	Giovanni Matteo Fumarola
HADOOP-10965	Print fully qualified path in CommandWithDestination error messages	Minor	.	André Kelpe	John Zhuge
MAPREDUCE-6663	[NNBench] Refactor nnbench as a Tool implementation.	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-12886	Exclude weak ciphers in SSLFactory through ssl-server.xml	Major	.	Wei-Chiu Chuang	Wei-Chiu Chuang
YARN-4884	Fix missing documentation about rmadmin command regarding node labels	Minor	.	Kai Sasaki	Kai Sasaki
HADOOP-12916	Allow RPC scheduler/callqueue backoff using response times	Major	ipc	Xiaoyu Yao	Xiaoyu Yao
HADOOP-12950	ShutdownHookManager should have a timeout for each of the Registered shutdown hook	Major	.	Xiaoyu Yao	Xiaoyu Yao
HADOOP-11661	Deprecate FileUtil#copyMerge	Major	util	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-11687	Ignore x-* and response headers when copying an Amazon S3 object	Major	fs/s3	Denis Jannot	Harsh J
HADOOP-11212	NetUtils.wrapException to handle SocketException explicitly	Major	util	Steve Loughran	Steve Loughran
HADOOP-12672	RPC timeout should not override IPC ping interval	Major	ipc	Masatake Iwasaki	Masatake Iwasaki
HDFS-10235	[NN UI] Last contact for Live Nodes should be relative time	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-8813	RPC Server and Client classes need InterfaceAudience and InterfaceStability annotations	Trivial	ipc	Brandon Li	Brandon Li
YARN-4756	Unnecessary wait in Node Status Updater during reboot	Major	.	Eric Badger	Eric Badger
HADOOP-12951	Improve documentation on KMS ACLs and delegation tokens	Major	.	Xiao Chen	Xiao Chen
HADOOP-12994	Specify PositionedReadable, add contract tests, fix problems	Major	fs	Steve Loughran	Steve Loughran
YARN-4630	Remove useless boxing/unboxing code	Minor	yarn	Kousuke Saruta	Kousuke Saruta
HDFS-10279	Improve validation of the configured number of tolerated failed volumes	Major	.	Yiqun Lin	Yiqun Lin
HADOOP-12822	Change “Metrics intern cache overflow” log level from WARN to INFO	Minor	metrics	Akira Ajisaka	Andras Bokor
HADOOP-12969	Mark IPC.Client and IPC.Server as @Public, @Evolving	Minor	ipc	Xiaobing Zhou	Xiaobing Zhou
HADOOP-12963	Allow using path style addressing for accessing the s3 endpoint	Minor	fs/s3	Andrew Baptist	Stephen Montgomery
HDFS-10280	Document new dfsadmin command -evictWriters	Minor	documentation	Wei-Chiu Chuang	Wei-Chiu Chuang
HDFS-10292	Add block id when client got Unable to close file exception	Minor	.	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-9412	getBlocks occupies FSLock and takes too long to complete	Major	.	He Tianyi	He Tianyi
HDFS-10302	BlockPlacementPolicyDefault should use default replication considerload value	Trivial	.	Yiqun Lin	Yiqun Lin
HDFS-10264	Logging improvements in FSImageFormatProtobuf.Saver	Major	namenode	Konstantin Shvachko	Xiaobing Zhou
HADOOP-12985	Support MetricsSource interface for DecayRpcScheduler Metrics	Major	.	Xiaoyu Yao	Xiaoyu Yao
HDFS-9894	Add unsetStoragePolicy API to FileContext/AbstractFileSystem and derivatives	Major	.	Xiaobing Zhou	Xiaobing Zhou
HADOOP-12891	S3AFileSystem should configure Multipart Copy threshold and chunk size	Major	fs/s3	Andrew Olson	Andrew Olson
HADOOP-13033	Add missing Javadoc enries to Interns.java	Minor	metrics	Andras Bokor	Andras Bokor
HDFS-10298	Document the usage of distcp -diff option	Major	distcp, documentation	Akira Ajisaka	Takashi Ohnishi
HADOOP-13039	Add documentation for configuration property ipc.maximum.data.length for controlling maximum RPC message size.	Major	documentation	Chris Nauroth	Mingliang Liu
HDFS-10330	Add Corrupt Blocks Information in Metasave Output	Major	.	Kuhu Shukla	Kuhu Shukla
HADOOP-5470	RunJar.unJar() should write the last modified time found in the jar entry to the uncompressed file	Minor	util	Colin Evans	Andras Bokor
HDFS-3702	Add an option for NOT writing the blocks locally if there is a datanode on the same box as the client	Minor	hdfs-client	Nicolas Liochon	Lei (Eddy) Xu
HDFS-10297	Increase default balance bandwidth and concurrent moves	Minor	balancer & mover	John Zhuge	John Zhuge
HADOOP-12957	Limit the number of outstanding async calls	Major	ipc	Xiaobing Zhou	Xiaobing Zhou
HDFS-9902	Support different values of dfs.datanode.du.reserved per storage type	Major	datanode	Pan Yuxuan	Brahma Reddy Battula
HADOOP-13103	Group resolution from LDAP may fail on javax.naming.ServiceUnavailableException	Minor	security	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
MAPREDUCE-6678	Allow ShuffleHandler readahead without drop-behind	Major	nodemanager	Nathan Roberts	Nathan Roberts
HADOOP-12982	Document missing S3A and S3 properties	Minor	documentation, fs/s3, tools	Wei-Chiu Chuang	Wei-Chiu Chuang
YARN-4995	FairScheduler: Display per-queue demand on the scheduler page	Minor	.	xupeng	xupeng
HADOOP-12868	Fix hadoop-openstack undeclared and unused dependencies	Major	tools	Allen Wittenauer	Masatake Iwasaki
HADOOP-12971	FileSystemShell doc should explain relative path	Critical	documentation	John Zhuge	John Zhuge
HADOOP-13148	TestDistCpViewFs to include IOExceptions in test error reports	Minor	tools/distcp	Steve Loughran	Steve Loughran
HADOOP-13146	Refactor RetryInvocationHandler	Minor	io	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HDFS-10383	Safely close resources in DFSTestUtil	Major	test	Mingliang Liu	Mingliang Liu
YARN-4002	make ResourceTrackerService.nodeHeartbeat more concurrent	Critical	.	Hong Zhiguo	Hong Zhiguo
HDFS-10417	Improve error message from checkBlockLocalPathAccess	Minor	datanode	Tianyin Xu	Tianyin Xu
HADOOP-13168	Support Future.get with timeout in ipc async calls	Major	ipc	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HADOOP-13145	In DistCp, prevent unnecessary getFileStatus call when not preserving metadata.	Major	tools/distcp	Chris Nauroth	Chris Nauroth
HADOOP-13198	Add support for OWASP's dependency-check	Minor	build, security	Mike Yoder	Mike Yoder
HDFS-10217	show ‘blockScheduled’ tooltip in datanodes table.	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-13199	Add doc for distcp -filters	Trivial	documentation	John Zhuge	John Zhuge
HADOOP-13193	Upgrade to Apache Yetus 0.3.0	Major	documentation, test	Allen Wittenauer	Kengo Seki
HDFS-10341	Add a metric to expose the timeout number of pending replication blocks	Major	.	Akira Ajisaka	Akira Ajisaka
HADOOP-13105	Support timeouts in LDAP queries in LdapGroupsMapping.	Major	security	Chris Nauroth	Mingliang Liu
HADOOP-12807	S3AFileSystem should read AWS credentials from environment variables	Minor	fs/s3	Tobin Baker	Tobin Baker
MAPREDUCE-5044	Have AM trigger jstack on task attempts that timeout before killing them	Major	mr-am	Jason Lowe	Eric Payne
HADOOP-10048	LocalDirAllocator should avoid holding locks while accessing the filesystem	Major	.	Jason Lowe	Jason Lowe
MAPREDUCE-6714	Refactor UncompressedSplitLineReader.fillBuffer()	Major	.	Daniel Templeton	Daniel Templeton
HADOOP-12943	Add -w -r options in dfs -test command	Major	fs, scripts, tools	Weiwei Yang	Weiwei Yang
HDFS-10493	Add links to datanode web UI in namenode datanodes page	Major	namenode, ui	Weiwei Yang	Weiwei Yang
HADOOP-13296	Cleanup javadoc for Path	Minor	documentation	Daniel Templeton	Daniel Templeton
HDFS-7597	DelegationTokenIdentifier should cache the TokenIdentifier to UGI mapping	Critical	webhdfs	Daryn Sharp	Daryn Sharp
HADOOP-13307	add rsync to Dockerfile so that precommit archive works	Trivial	build	Allen Wittenauer	Allen Wittenauer
HADOOP-13067	cleanup the dockerfile	Major	.	Allen Wittenauer	Allen Wittenauer
HADOOP-13227	AsyncCallHandler should use an event driven architecture to handle async calls	Major	io, ipc	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HADOOP-13263	Reload cached groups in background after expiry	Major	.	Stephen O'Donnell	Stephen O'Donnell
HDFS-10440	Improve DataNode web UI	Major	datanode, ui	Weiwei Yang	Weiwei Yang
HADOOP-13239	Deprecate s3:// in branch-2	Major	fs/s3	Mingliang Liu	Mingliang Liu
HDFS-10582	Change deprecated configuration fs.checkpoint.dir to dfs.namenode.checkpoint.dir in HDFS Commands Doc	Minor	documentation	Pan Yuxuan	Pan Yuxuan
HDFS-10488	Update WebHDFS documentation regarding CREATE and MKDIR default permissions	Minor	documentation, webhdfs	Wellington Chevreuil	Wellington Chevreuil
HDFS-10300	TestDistCpSystem should share MiniDFSCluster	Trivial	test	John Zhuge	John Zhuge
HADOOP-13290	Appropriate use of generics in FairCallQueue	Major	ipc	Konstantin Shvachko	Jonathan Hung
HADOOP-13289	Remove unused variables in TestFairCallQueue	Minor	test	Konstantin Shvachko	Ye Zhou
HDFS-10628	Log HDFS Balancer exit message to its own log	Minor	balancer & mover	Jiayi Zhou	Jiayi Zhou
HADOOP-13298	Fix the leftover L&N files in hadoop-build-tools/src/main/resources/META-INF/	Minor	.	Xiao Chen	Tsuyoshi Ozawa
YARN-4883	Make consistent operation name in AdminService	Minor	resourcemanager	Kai Sasaki	Kai Sasaki
YARN-1126	Add validation of users input nodes-states options to nodes CLI	Major	.	Wei Yan	Wei Yan
HDFS-10287	MiniDFSCluster should implement AutoCloseable	Minor	test	John Zhuge	Andras Bokor
HDFS-10225	DataNode hot swap drives should disallow storage type changes.	Major	datanode	Lei (Eddy) Xu	Lei (Eddy) Xu
HDFS-10660	Expose storage policy apis via HDFSAdmin interface	Major	.	Rakesh R	Rakesh R
HDFS-9937	Update dfsadmin command line help and HdfsQuotaAdminGuide	Minor	.	Wei-Chiu Chuang	Kai Sasaki
HDFS-10667	Report more accurate info about data corruption location	Major	datanode, hdfs	Yongjun Zhang	Yuanbo Liu
HDFS-10676	Add namenode metric to measure time spent in generating EDEKs	Major	namenode	Hanisha Koneru	Hanisha Koneru
MAPREDUCE-6746	Replace org.apache.commons.io.Charsets with java.nio.charset.StandardCharsets	Minor	.	Vincent Poon	Vincent Poon
HDFS-10703	HA NameNode Web UI should show last checkpoint time	Minor	ui	John Zhuge	John Zhuge
MAPREDUCE-6729	Accurately compute the test execute time in DFSIO	Minor	benchmarks, performance, test	mingleizhang	mingleizhang
HADOOP-13444	Replace org.apache.commons.io.Charsets with java.nio.charset.StandardCharsets	Minor	.	Vincent Poon	Vincent Poon
YARN-5456	container-executor support for FreeBSD, NetBSD, and others if conf path is absolute	Major	nodemanager, security	Allen Wittenauer	Allen Wittenauer
MAPREDUCE-6730	Use StandardCharsets instead of String overload in TextOutputFormat	Minor	.	Sahil Kang	Sahil Kang
HDFS-10707	Replace org.apache.commons.io.Charsets with java.nio.charset.StandardCharsets	Minor	.	Vincent Poon	Vincent Poon
HADOOP-13442	Optimize UGI group lookups	Major	.	Daryn Sharp	Daryn Sharp
HADOOP-13466	Add an AutoCloseableLock class	Major	.	Chen Liang	Chen Liang
YARN-5483	Optimize RMAppAttempt#pullJustFinishedContainers	Major	.	sandflee	sandflee
HADOOP-13190	Mention LoadBalancingKMSClientProvider in KMS HA documentation	Major	documentation, kms	Wei-Chiu Chuang	Wei-Chiu Chuang
HDFS-10677	Über-jira: Enhancements to NNThroughputBenchmark tool	Major	benchmarks, tools	Mingliang Liu	Mingliang Liu
HDFS-10342	BlockManager#createLocatedBlocks should not check corrupt replicas if none are corrupt	Major	hdfs	Daryn Sharp	Kuhu Shukla
HDFS-10682	Replace FsDatasetImpl object lock with a separate lock object	Major	datanode	Chen Liang	Chen Liang
HADOOP-13503	Improve SaslRpcClient failure logging	Major	security	Xiaobing Zhou	Xiaobing Zhou
HADOOP-13527	Add Spark to CallerContext LimitedPrivate scope	Minor	ipc	Weiqing Yang	Weiqing Yang
MAPREDUCE-6587	Remove unused params in connection-related methods of Fetcher	Minor	.	Yiqun Lin	Yiqun Lin
HADOOP-13538	Deprecate getInstance and initialize methods with Path in TrashPolicy	Minor	.	Yiqun Lin	Yiqun Lin
HDFS-8986	Add option to -du to calculate directory space usage excluding snapshots	Major	snapshots	Gautam Gopalakrishnan	Xiao Chen
HDFS-10798	Make the threshold of reporting FSNamesystem lock contention configurable	Major	logging, namenode	Zhe Zhang	Erik Krogen
YARN-5550	TestYarnCLI#testGetContainers should format according to CONTAINER_PATTERN	Minor	client, test	Jonathan Hung	Jonathan Hung
HDFS-10814	Add assertion for getNumEncryptionZones when no EZ is created	Minor	test	Vinitha Reddy Gankidi	Vinitha Reddy Gankidi
HDFS-10817	Add Logging for Long-held NN Read Locks	Major	logging, namenode	Erik Krogen	Erik Krogen
HADOOP-13465	Design Server.Call to be extensible for unified call queue	Major	ipc	Daryn Sharp	Daryn Sharp
HDFS-10833	Fix JSON errors in WebHDFS.md examples	Trivial	documentation	Andrew Wang	Andrew Wang
HDFS-10742	Measure lock time in FsDatasetImpl	Major	datanode	Chen Liang	Chen Liang
HDFS-10831	Add log when URLConnectionFactory.openConnection failed	Minor	webhdfs	yunjiong zhao	yunjiong zhao
HADOOP-13598	Add eol=lf for unix format files in .gitattributes	Major	.	Akira Ajisaka	Yiqun Lin
HADOOP-13580	If user is unauthorized, log “unauthorized” instead of “Invalid signed text:”	Minor	security	Wei-Chiu Chuang	Wei-Chiu Chuang
HDFS-10489	Deprecate dfs.encryption.key.provider.uri for HDFS encryption zones	Minor	.	Xiao Chen	Xiao Chen
YARN-5540	scheduler spends too much time looking at empty priorities	Major	capacity scheduler, fairscheduler, resourcemanager	Nathan Roberts	Jason Lowe
HADOOP-13169	Randomize file list in SimpleCopyListing	Minor	tools/distcp	Rajesh Balamohan	Rajesh Balamohan
HDFS-10875	Optimize du -x to cache intermediate result	Major	snapshots	Xiao Chen	Xiao Chen
YARN-4591	YARN Web UIs should provide a robots.txt	Trivial	.	Lars Francke	Sidharta Seethana
YARN-5622	TestYarnCLI.testGetContainers fails due to mismatched date formats	Minor	.	Eric Badger	Eric Badger
HDFS-10876	Dispatcher#dispatch should log IOException stacktrace	Trivial	balancer & mover	Wei-Chiu Chuang	Manoj Govindassamy
YARN-3692	Allow REST API to set a user generated message when killing an application	Major	.	Rajat Jain	Rohith Sharma K S
HDFS-10869	Remove the unused method InodeId#checkId()	Major	namenode	Jagadesh Kiran N	Jagadesh Kiran N
YARN-3877	YarnClientImpl.submitApplication swallows exceptions	Minor	client	Steve Loughran	Varun Saxena
HADOOP-13658	Replace config key literal strings with config key names I: hadoop common	Minor	conf	Chen Liang	Chen Liang
HADOOP-13537	Support external calls in the RPC call queue	Major	ipc	Daryn Sharp	Daryn Sharp
HADOOP-13317	Add logs to KMS server-side to improve supportability	Minor	kms	Xiao Chen	Suraj Acharya
HDFS-10940	Reduce performance penalty of block caching when not used	Major	namenode	Daryn Sharp	Daryn Sharp
YARN-4855	Should check if node exists when replace nodelabels	Minor	.	Tao Jie	Tao Jie
HDFS-10690	Optimize insertion/removal of replica in ShortCircuitCache	Major	hdfs-client	Fenghua Hu	Fenghua Hu
HADOOP-13685	Document -safely option of rm command.	Major	.	Xiaoyu Yao	Xiaoyu Yao
MAPREDUCE-6741	add MR support to redact job conf properties	Major	mrv2	Haibo Chen	Haibo Chen
HDFS-10963	Reduce log level when network topology cannot find enough datanodes.	Minor	.	Xiao Chen	Xiao Chen
HADOOP-13323	Downgrade stack trace on FS load from Warn to debug	Minor	fs	Steve Loughran	Steve Loughran
HADOOP-13150	Avoid use of toString() in output of HDFS ACL shell commands.	Minor	.	Chris Nauroth	Chris Nauroth
HADOOP-13689	Do not attach javadoc and sources jars during non-dist build	Major	.	Andrew Wang	Andrew Wang
HADOOP-13641	Update UGI#spawnAutoRenewalThreadForUserCreds to reduce indentation	Minor	.	Xiao Chen	Huafeng Wang
HDFS-10933	Refactor TestFsck	Minor	.	Takanobu Asanuma	Takanobu Asanuma
HADOOP-13684	Snappy may complain Hadoop is built without snappy if libhadoop is not found.	Minor	.	Wei-Chiu Chuang	Wei-Chiu Chuang
HADOOP-13698	Document caveat for KeyShell when underlying KeyProvider does not delete a key	Minor	documentation, kms	Xiao Chen	Xiao Chen
HDFS-10789	Route webhdfs through the RPC call queue	Major	ipc, webhdfs	Daryn Sharp	Daryn Sharp
HDFS-10903	Replace config key literal strings with config key names II: hadoop hdfs	Minor	.	Mingliang Liu	Chen Liang
HADOOP-13710	Supress CachingGetSpaceUsed from logging interrupted exception stacktrace	Minor	fs	Wei-Chiu Chuang	Hanisha Koneru
YARN-5599	Publish AM launch command to ATS	Major	.	Daniel Templeton	Rohith Sharma K S
HDFS-11012	Unnecessary INFO logging on DFSClients for InvalidToken	Minor	fs	Harsh J	Harsh J
HDFS-11003	Expose “XmitsInProgress” through DataNodeMXBean	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-13724	Fix a few typos in site markdown documents	Minor	documentation	Andrew Wang	Ding Fei
HDFS-11009	Add a tool to reconstruct block meta file from CLI	Major	datanode	Xiao Chen	Xiao Chen
HDFS-9480	Expose nonDfsUsed via StorageTypeStats	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-12082	Support multiple authentication schemes via AuthenticationFilter	Major	security	Hrishikesh Gadre	Hrishikesh Gadre
HADOOP-13669	KMS Server should log exceptions before throwing	Major	kms	Xiao Chen	Suraj Acharya
HADOOP-13502	Split fs.contract.is-blobstore flag into more descriptive flags for use by contract tests.	Minor	test	Chris Nauroth	Chris Nauroth
HADOOP-13017	Implementations of InputStream.read(buffer, offset, bytes) to exit 0 if bytes==0	Major	fs, io	Steve Loughran	Steve Loughran
HDFS-11055	Update default-log4j.properties for httpfs to imporve test logging	Major	httpfs, test	Wei-Chiu Chuang	Wei-Chiu Chuang
YARN-4963	capacity scheduler: Make number of OFF_SWITCH assignments per heartbeat configurable	Major	capacityscheduler	Nathan Roberts	Nathan Roberts
HDFS-11047	Remove deep copies of FinalizedReplica to alleviate heap consumption on DataNode	Major	datanode	Xiaobing Zhou	Xiaobing Zhou
MAPREDUCE-6799	Document mapreduce.jobhistory.webapp.https.address in mapred-default.xml	Minor	documentation, jobhistoryserver	Akira Ajisaka	Yiqun Lin
HADOOP-12325	RPC Metrics : Add the ability track and log slow RPCs	Major	ipc, metrics	Anu Engineer	Anu Engineer
HDFS-11074	Remove unused method FsDatasetSpi#getFinalizedBlocksOnPersistentStorage	Major	datanode	Arpit Agarwal	Hanisha Koneru
MAPREDUCE-6795	Update the document for JobConf#setNumReduceTasks	Major	documentation	Akira Ajisaka	Yiqun Lin
HADOOP-13603	Ignore package line length checkstyle rule	Major	build	Shane Kumpf	Shane Kumpf
HADOOP-13583	Incorporate checkcompatibility script which runs Java API Compliance Checker	Major	scripts	Andrew Wang	Andrew Wang
HDFS-11080	Update HttpFS to use ConfigRedactor	Major	.	Sean Mackrory	Sean Mackrory
YARN-5697	Use CliParser to parse options in RMAdminCLI	Major	.	Tao Jie	Tao Jie
HADOOP-12453	Support decoding KMS Delegation Token with its own Identifier	Major	kms, security	Xiaoyu Yao	Xiaoyu Yao
HADOOP-7930	Kerberos relogin interval in UserGroupInformation should be configurable	Major	security	Alejandro Abdelnur	Robert Kanter
YARN-5720	Update document for “rmadmin -replaceLabelOnNode”	Minor	.	Tao Jie	Tao Jie
HADOOP-13782	Make MutableRates metrics thread-local write, aggregate-on-read	Major	metrics	Erik Krogen	Erik Krogen
HADOOP-13590	Retry until TGT expires even if the UGI renewal thread encountered exception	Major	security	Xiao Chen	Xiao Chen
HDFS-11120	TestEncryptionZones should waitActive	Minor	test	Xiao Chen	John Zhuge
HADOOP-13720	Add more info to the msgs printed in AbstractDelegationTokenSecretManager for better supportability	Trivial	common, security	Yongjun Zhang	Yongjun Zhang
HDFS-10941	Improve BlockManager#processMisReplicatesAsync log	Major	namenode	Xiaoyu Yao	Chen Liang
HADOOP-13810	Add a test to verify that Configuration handles &-encoded characters	Minor	test	Steve Loughran	Steve Loughran
HADOOP-13742	Expose “NumOpenConnectionsPerUser” as a metric	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-13646	Remove outdated overview.html	Minor	.	Akira Ajisaka	Brahma Reddy Battula
HADOOP-13166	add getFileStatus(“/”) test to AbstractContractGetFileStatusTest	Minor	fs, test	Steve Loughran	Steve Loughran
HADOOP-11603	Metric Snapshot log can be changed #MetricsSystemImpl.java since all the services will be initialized	Minor	metrics	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-10776	Open up already widely-used APIs for delegation-token fetching & renewal to ecosystem projects	Blocker	.	Robert Joseph Evans	Vinod Kumar Vavilapalli
HDFS-11175	Document uppercase key names are not supported in TransparentEncryption.md	Minor	documentation	Yuanbo Liu	Yiqun Lin
HADOOP-13790	Make qbt script executable	Trivial	scripts	Andrew Wang	Andrew Wang
HDFS-8674	Improve performance of postponed block scans	Critical	namenode	Daryn Sharp	Daryn Sharp
HDFS-10581	Hide redundant table on NameNode WebUI when no nodes are decomissioning	Trivial	hdfs, ui	Weiwei Yang	Weiwei Yang
HDFS-11217	Annotate NameNode and DataNode MXBean interfaces as Private/Stable	Major	.	Akira Ajisaka	Jagadesh Kiran N
HADOOP-13900	Remove snapshot version of SDK dependency from Azure Data Lake Store File System	Major	fs/adl	Vishwajeet Dusane	Vishwajeet Dusane
HDFS-11249	Redundant toString() in DFSConfigKeys.java	Trivial	.	Akira Ajisaka	Jagadesh Kiran N
YARN-5882	Test only changes from YARN-4126	Major	.	Andrew Wang	Jian He
HDFS-11262	Remove unused variables in FSImage.java	Trivial	.	Akira Ajisaka	Jagadesh Kiran N
YARN-4994	Use MiniYARNCluster with try-with-resources in tests	Trivial	test	Andras Bokor	Andras Bokor
YARN-5709	Cleanup leader election configs and pluggability	Critical	resourcemanager	Karthik Kambatla	Karthik Kambatla
HDFS-9483	Documentation does not cover use of “swebhdfs” as URL scheme for SSL-secured WebHDFS.	Major	documentation	Chris Nauroth	Surendra Singh Lilhore
HDFS-11292	log lastWrittenTxId etc info in logSyncAll	Major	hdfs	Yongjun Zhang	Yongjun Zhang
HADOOP-13956	Read ADLS credentials from Credential Provider	Critical	fs/adl	John Zhuge	John Zhuge
HADOOP-13962	Update ADLS SDK to 2.1.4	Major	fs/adl	John Zhuge	John Zhuge
HADOOP-13037	Refactor Azure Data Lake Store as an independent FileSystem	Major	fs/adl	Shrikant Naidu	Vishwajeet Dusane
HADOOP-13946	Document how HDFS updates timestamps in the FS spec; compare with object stores	Minor	documentation, fs	Steve Loughran	Steve Loughran
HDFS-10601	Improve log message to include hostname when the NameNode is in safemode	Minor	.	Kuhu Shukla	Kuhu Shukla

BUG FIXES:

JIRA	Summary	Priority	Component	Reporter	Contributor
HADOOP-8818	Should use equals() rather than == to compare String or Text in MD5MD5CRC32FileChecksum and TFileDumper	Minor	fs, io	Brandon Li	Brandon Li
HADOOP-8436	NPE In getLocalPathForWrite ( path, conf ) when the required context item is not configured	Major	fs	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-9121	InodeTree.java has redundant check for vName while throwing exception	Major	fs	Arup Malakar	Arup Malakar
HADOOP-9242	Duplicate surefire plugin config in hadoop-common	Major	test	Andrey Klochkov	Andrey Klochkov
HADOOP-8419	GzipCodec NPE upon reset with IBM JDK	Major	io	Luke Lu	Yu Li
HDFS-4366	Block Replication Policy Implementation May Skip Higher-Priority Blocks for Lower-Priority Blocks	Major	.	Derek Dagit	Derek Dagit
HADOOP-11559	Add links to RackAwareness and InterfaceClassification to site index	Minor	documentation	Masatake Iwasaki	Masatake Iwasaki
HADOOP-11581	Fix Multithreaded correctness Warnings #org.apache.hadoop.fs.shell.Ls	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-11568	Description on usage of classpath in hadoop command is incomplete.	Trivial	tools	Archana T	Archana T
HADOOP-10027	*Compressor_deflateBytesDirect passes instance instead of jclass to GetStaticObjectField	Minor	native	Eric Abbott	Hui Zheng
HDFS-5356	MiniDFSCluster shoud close all open FileSystems when shutdown()	Critical	test	haosdent	Rakesh R
YARN-3197	Confusing log generated by CapacityScheduler	Minor	capacityscheduler	Hitesh Shah	Varun Saxena
YARN-3243	CapacityScheduler should pass headroom from parent to children to make sure ParentQueue obey its capacity limits.	Major	capacityscheduler, resourcemanager	Wangda Tan	Wangda Tan
YARN-3305	AM-Used Resource for leafqueue is wrongly populated if AM ResourceRequest is less than minimumAllocation	Major	scheduler	Rohith Sharma K S	Rohith Sharma K S
YARN-3205	FileSystemRMStateStore should disable FileSystem Cache to avoid get a Filesystem with an old configuration.	Major	resourcemanager	zhihai xu	zhihai xu
MAPREDUCE-5807	Print usage for TeraSort job.	Trivial	examples	Rohith Sharma K S	Rohith Sharma K S
YARN-3351	AppMaster tracking URL is broken in HA	Major	webapp	Anubhav Dhoot	Anubhav Dhoot
HDFS-7867	Update action param from “start” to “prepare” in rolling upgrade javadoc	Trivial	.	J.Andreina	J.Andreina
MAPREDUCE-6281	Fix javadoc in Terasort	Trivial	.	Albert Chu	Albert Chu
YARN-3269	Yarn.nodemanager.remote-app-log-dir could not be configured to fully qualified path	Major	.	Xuan Gong	Xuan Gong
MAPREDUCE-6213	NullPointerException caused by job history server addr not resolvable	Minor	applicationmaster	Peng Zhang	Peng Zhang
MAPREDUCE-5448	MapFileOutputFormat#getReaders bug with invisible files/folders	Minor	mrv2	Maysam Yabandeh	Maysam Yabandeh
MAPREDUCE-6242	Progress report log is incredibly excessive in application master	Major	applicationmaster	Jian Fang	Varun Saxena
HDFS-3325	When configuring “dfs.namenode.safemode.threshold-pct” to a value greater or equal to 1 there is mismatch in the UI report	Minor	.	J.Andreina	J.Andreina
YARN-3383	AdminService should use “warn” instead of “info” to log exception when operation fails	Major	resourcemanager	Wangda Tan	Li Lu
YARN-3397	yarn rmadmin should skip -failover	Minor	resourcemanager	J.Andreina	J.Andreina
HADOOP-11724	DistCp throws NPE when the target directory is root.	Minor	.	Lei (Eddy) Xu	Lei (Eddy) Xu
YARN-3400	[JDK 8] Build Failure due to unreported exceptions in RPCUtil	Major	.	Robert Kanter	Robert Kanter
HDFS-7990	IBR delete ack should not be delayed	Major	namenode	Daryn Sharp	Daryn Sharp
HADOOP-11760	Fix typo of javadoc in DistCp	Trivial	.	Chen He	Brahma Reddy Battula
MAPREDUCE-6294	Remove an extra parameter described in Javadoc of TockenCache	Trivial	.	Chen He	Brahma Reddy Battula
HDFS-7501	TransactionsSinceLastCheckpoint can be negative on SBNs	Major	namenode	Harsh J	Gautam Gopalakrishnan
HDFS-8002	Website refers to /trash directory	Major	documentation	Mike Drob	Brahma Reddy Battula
HDFS-7261	storageMap is accessed without synchronization in DatanodeDescriptor#updateHeartbeatState()	Major	.	Ted Yu	Brahma Reddy Battula
HDFS-7997	The first non-existing xattr should also throw IOException	Minor	.	zhouyingchao	zhouyingchao
HDFS-6945	BlockManager should remove a block from excessReplicateMap and decrement ExcessBlocks metric when the block is removed	Critical	namenode	Akira Ajisaka	Akira Ajisaka
YARN-3425	NPE from RMNodeLabelsManager.serviceStop when NodeLabelsManager.serviceInit failed	Minor	resourcemanager	Bibin A Chundatt	Bibin A Chundatt
HDFS-7922	ShortCircuitCache#close is not releasing ScheduledThreadPoolExecutors	Major	.	Rakesh R	Rakesh R
HDFS-8026	Trace FSOutputSummer#writeChecksumChunks rather than DFSOutputStream#writeChunk	Minor	.	Colin P. McCabe	Colin P. McCabe
YARN-3415	Non-AM containers can be counted towards amResourceUsage of a Fair Scheduler queue	Critical	fairscheduler	Rohit Agarwal	zhihai xu
HADOOP-11797	releasedocmaker.py needs to put ASF headers on output	Major	build	Allen Wittenauer	Allen Wittenauer
HADOOP-11800	Clean up some test methods in TestCodec.java	Major	test	Akira Ajisaka	Brahma Reddy Battula
MAPREDUCE-4844	Counters / AbstractCounters have constant references not declared final	Major	.	Gera Shegalov	Brahma Reddy Battula
YARN-3435	AM container to be allocated Appattempt AM container shown as null	Trivial	resourcemanager	Bibin A Chundatt	Bibin A Chundatt
YARN-3429	TestAMRMTokens.testTokenExpiry fails Intermittently with error message:Invalid AMRMToken	Major	test	zhihai xu	zhihai xu
HDFS-5215	dfs.datanode.du.reserved is not considered while computing available space	Major	datanode	Brahma Reddy Battula	Brahma Reddy Battula
YARN-3457	NPE when NodeManager.serviceInit fails and stopRecoveryStore called	Minor	nodemanager	Bibin A Chundatt	Bibin A Chundatt
YARN-3459	Fix failiure of TestLog4jWarningErrorMetricsAppender	Blocker	.	Li Lu	Varun Vasudev
HDFS-8046	Allow better control of getContentSummary	Major	.	Kihwal Lee	Kihwal Lee
YARN-2890	MiniYarnCluster should turn on timeline service if configured to do so	Major	.	Mit Desai	Mit Desai
HDFS-7725	Incorrect “nodes in service” metrics caused all writes to fail	Major	.	Ming Ma	Ming Ma
HDFS-8096	DatanodeMetrics#blocksReplicated will get incremented early and even for failed transfers	Major	datanode	Vinayakumar B	Vinayakumar B
YARN-3465	Use LinkedHashMap to preserve order of resource requests	Major	nodemanager	zhihai xu	zhihai xu
HDFS-8099	Change “DFSInputStream has been closed already” message to debug log level	Minor	hdfs-client	Charles Lamb	Charles Lamb
HDFS-8091	ACLStatus and XAttributes not properly presented to INodeAttributesProvider before returning to client	Major	namenode	Arun Suresh	Arun Suresh
MAPREDUCE-6266	Job#getTrackingURL should consistently return a proper URL	Minor	.	Ray Chiang	Ray Chiang
HDFS-8081	Split getAdditionalBlock() into two methods.	Major	.	Konstantin Shvachko	Konstantin Shvachko
HDFS-7939	Two fsimage_rollback_* files are created which are not deleted after rollback.	Critical	.	J.Andreina	J.Andreina
MAPREDUCE-6314	TestPipeApplication fails on trunk	Major	test	Varun Vasudev	Varun Vasudev
YARN-3466	Fix RM nodes web page to sort by node HTTP-address, #containers and node-label column	Major	resourcemanager, webapp	Jason Lowe	Jason Lowe
HDFS-7931	DistributedFIleSystem should not look for keyProvider in cache if Encryption is disabled	Minor	hdfs-client	Arun Suresh	Arun Suresh
HDFS-8111	NPE thrown when invalid FSImage filename given for “hdfs oiv_legacy” cmd	Minor	tools	Archana T	Surendra Singh Lilhore
HADOOP-11811	Fix typos in hadoop-project/pom.xml and TestAccessControlList	Minor	.	Chen He	Brahma Reddy Battula
YARN-3382	Some of UserMetricsInfo metrics are incorrectly set to root queue metrics	Major	webapp	Rohit Agarwal	Rohit Agarwal
YARN-3472	Possible leak in DelegationTokenRenewer#allTokens	Major	.	Jian He	Rohith Sharma K S
YARN-3394	WebApplication proxy documentation is incomplete	Minor	resourcemanager	Bibin A Chundatt	Naganarasimha G R
HADOOP-11819	HttpServerFunctionalTest#prepareTestWebapp should create web app directory if it does not exist.	Minor	.	Rohith Sharma K S	Rohith Sharma K S
HDFS-6666	Abort NameNode and DataNode startup if security is enabled but block access token is not enabled.	Minor	datanode, namenode, security	Chris Nauroth	Vijay Bhat
HDFS-8055	NullPointerException when topology script is missing.	Major	namenode	Anu Engineer	Anu Engineer
YARN-3266	RMContext inactiveNodes should have NodeId as map key	Major	resourcemanager	Chengbing Liu	Chengbing Liu
YARN-3436	Fix URIs in documention of YARN web service REST APIs	Minor	documentation, resourcemanager	Bibin A Chundatt	Bibin A Chundatt
HDFS-8127	NameNode Failover during HA upgrade can cause DataNode to finalize upgrade	Blocker	ha	Jing Zhao	Jing Zhao
YARN-3462	Patches applied for YARN-2424 are inconsistent between trunk and branch-2	Major	.	Sidharta Seethana	Naganarasimha G R
HDFS-8151	Always use snapshot path as source when invalid snapshot names are used for diff based distcp	Minor	distcp	Sushmitha Sreenivasan	Jing Zhao
HDFS-7934	Update RollingUpgrade rollback documentation: should use bootstrapstandby for standby NN	Critical	documentation	J.Andreina	J.Andreina
HDFS-8149	The footer of the Web UI “Hadoop, 2014” is old	Major	.	Akira Ajisaka	Brahma Reddy Battula
HDFS-8142	DistributedFileSystem encryption zone commands should resolve relative paths	Major	.	Rakesh R	Rakesh R
MAPREDUCE-6300	Task list sort by task id broken	Minor	.	Siqi Li	Siqi Li
YARN-3021	YARN's delegation-token handling disallows certain trust setups to operate properly over DistCp	Major	security	Harsh J	Yongjun Zhang
HDFS-8153	Error Message points to wrong parent directory in case of path component name length error	Major	namenode	Anu Engineer	Anu Engineer
YARN-3493	RM fails to come up with error “Failed to load/recover state” when mem settings are changed	Critical	yarn	Sumana Sathish	Jian He
HDFS-8043	NPE in MiniDFSCluster teardown	Major	test	Steve Loughran	Brahma Reddy Battula
HDFS-8173	NPE thrown at DataNode shutdown when HTTP server was not able to create	Minor	datanode	Archana T	Surendra Singh Lilhore
YARN-3497	ContainerManagementProtocolProxy modifies IPC timeout conf without making a copy	Major	client	Jason Lowe	Jason Lowe
MAPREDUCE-6238	MR2 can't run local jobs with -libjars command options which is a regression from MR1	Critical	mrv2	zhihai xu	zhihai xu
HDFS-8179	DFSClient#getServerDefaults returns null within 1 hour of system start	Blocker	.	Xiaoyu Yao	Xiaoyu Yao
HDFS-7993	Provide each Replica details in fsck	Major	.	Ming Ma	J.Andreina
HDFS-8163	Using monotonicNow for block report scheduling causes test failures on recently restarted systems	Blocker	datanode	Arpit Agarwal	Arpit Agarwal
HADOOP-11704	DelegationTokenAuthenticationFilter must pass ipaddress instead of hostname to ProxyUsers#authorize()	Major	.	Anubhav Dhoot	Anubhav Dhoot
YARN-3495	Confusing log generated by FairScheduler	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
MAPREDUCE-6293	Set job classloader on uber-job's LocalContainerLauncher event thread	Major	mr-am	Sangjin Lee	Sangjin Lee
HADOOP-11846	TestCertificateUtil.testCorruptPEM failing on Jenkins JDK8	Major	build, security	Steve Loughran	Larry McCay
HADOOP-11859	PseudoAuthenticationHandler fails with httpcomponents v4.4	Major	.	Eugene Koifman	Eugene Koifman
MAPREDUCE-6330	Fix typo in Task Attempt API's URL in documentations	Minor	documentation	Ryu Kobayashi	Ryu Kobayashi
HADOOP-11848	Incorrect arguments to sizeof in DomainSocket.c	Major	native	Malcolm Kavalsky	Malcolm Kavalsky
HADOOP-11868	Invalid user logins trigger large backtraces in server log	Major	.	Chang Li	Chang Li
HADOOP-11861	test-patch.sh rewrite addendum patch	Major	build	Anu Engineer	Allen Wittenauer
HADOOP-11864	JWTRedirectAuthenticationHandler breaks java8 javadocs	Major	build	Steve Loughran	Larry McCay
HDFS-4448	Allow HA NN to start in secure mode with wildcard address configured	Major	ha, namenode, security	Aaron T. Myers	Aaron T. Myers
YARN-3522	DistributedShell uses the wrong user to put timeline data	Blocker	timelineserver	Zhijie Shen	Zhijie Shen
HDFS-8147	Mover should not schedule two replicas to the same DN storage	Major	balancer & mover	Surendra Singh Lilhore	Surendra Singh Lilhore
HADOOP-11872	“hadoop dfs” command prints message about using “yarn jar” on Windows(branch-2 only)	Minor	scripts	Varun Vasudev	Varun Vasudev
HADOOP-11730	Regression: s3n read failure recovery broken	Major	fs/s3	Takenori Sato	Takenori Sato
YARN-3516	killing ContainerLocalizer action doesn't take effect when private localizer receives FETCH_FAILURE status.	Minor	nodemanager	zhihai xu	zhihai xu
HADOOP-11802	DomainSocketWatcher thread terminates sometimes after there is an I/O error during requestShortCircuitShm	Major	.	Eric Payne	Colin P. McCabe
HDFS-8070	Pre-HDFS-7915 DFSClient cannot use short circuit on post-HDFS-7915 DataNode	Blocker	caching	Gopal V	Colin P. McCabe
HDFS-8217	During block recovery for truncate Log new Block Id in case of copy-on-truncate is true.	Major	datanode	Vinayakumar B	Vinayakumar B
HDFS-8231	StackTrace displayed at client while QuotaByStorageType exceeds	Major	hdfs-client	J.Andreina	J.Andreina
HDFS-8191	Fix byte to integer casting in SimulatedFSDataset#simulatedByte	Minor	.	Zhe Zhang	Zhe Zhang
YARN-3387	Previous AM‘s container complete message couldn’t pass to current am if am restarted and rm changed	Critical	resourcemanager	sandflee	sandflee
HADOOP-11876	Refactor code to make it more readable, minor maybePrintStats bug	Trivial	tools/distcp	Zoran Dimitrijevic	Zoran Dimitrijevic
YARN-3444	Fix typo capabililty	Trivial	applications/distributed-shell	Gabor Liptak	Gabor Liptak
YARN-3537	NPE when NodeManager.serviceInit fails and stopRecoveryStore invoked	Major	nodemanager	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-8211	DataNode UUID is always null in the JMX counter	Major	datanode	Anu Engineer	Anu Engineer
MAPREDUCE-6333	TestEvents,TestAMWebServicesTasks,TestAppController are broken due to MAPREDUCE-6297	Major	.	Siqi Li	Siqi Li
HDFS-8206	Fix the typos in hadoop-hdfs-httpfs	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
YARN-3464	Race condition in LocalizerRunner kills localizer before localizing all resources	Critical	nodemanager	zhihai xu	zhihai xu
MAPREDUCE-6252	JobHistoryServer should not fail when encountering a missing directory	Major	jobhistoryserver	Craig Welch	Craig Welch
YARN-3530	ATS throws exception on trying to filter results without otherinfo.	Critical	timelineserver	Sreenath Somarajapuram	Zhijie Shen
HDFS-8205	CommandFormat#parse() should not parse option as value of option	Blocker	.	Peter Shi	Peter Shi
HADOOP-11870	[JDK8] AuthenticationFilter, CertificateUtil, SignerSecretProviders, KeyAuthorizationKeyProvider Javadoc issues	Major	build	Robert Kanter	Robert Kanter
MAPREDUCE-6324	Uber jobs fail to update AMRM token when it rolls over	Blocker	mr-am	Jason Lowe	Jason Lowe
HDFS-8232	Missing datanode counters when using Metrics2 sink interface	Major	datanode	Anu Engineer	Anu Engineer
MAPREDUCE-6334	Fetcher#copyMapOutput is leaking usedMemory upon IOException during InMemoryMapOutput shuffle handler	Blocker	.	Eric Payne	Eric Payne
HDFS-8273	FSNamesystem#Delete() should not call logSync() when holding the lock	Blocker	namenode	Jing Zhao	Haohui Mai
YARN-3485	FairScheduler headroom calculation doesn't consider maxResources for Fifo and FairShare policies	Critical	fairscheduler	Karthik Kambatla	Karthik Kambatla
HDFS-8269	getBlockLocations() does not resolve the .reserved path and generates incorrect edit logs when updating the atime	Blocker	.	Yesha Vora	Haohui Mai
YARN-3517	RM web ui for dumping scheduler logs should be for admins only	Blocker	resourcemanager, security	Varun Vasudev	Varun Vasudev
HDFS-8214	Secondary NN Web UI shows wrong date for Last Checkpoint	Major	namenode	Charles Lamb	Charles Lamb
YARN-3533	Test: Fix launchAM in MockRM to wait for attempt to be scheduled	Major	yarn	Anubhav Dhoot	Anubhav Dhoot
MAPREDUCE-6339	Job history file is not flushed correctly because isTimerActive flag is not set true when flushTimerTask is scheduled.	Critical	mrv2	zhihai xu	zhihai xu
HADOOP-11821	Fix findbugs warnings in hadoop-sls	Major	tools	Akira Ajisaka	Brahma Reddy Battula
YARN-3564	Fix TestContainerAllocation.testAMContainerAllocationWhenDNSUnavailable fails randomly	Major	.	Jian He	Jian He
HADOOP-11891	OsSecureRandom should lazily fill its reservoir	Major	security	Arun Suresh	Arun Suresh
HADOOP-11866	increase readability and reliability of checkstyle, shellcheck, and whitespace reports	Minor	.	Naganarasimha G R	Allen Wittenauer
HDFS-8292	Move conditional in fmt_time from dfs-dust.js to status.html	Minor	namenode	Charles Lamb	Charles Lamb
HDFS-8300	Fix unit test failures and findbugs warning caused by HDFS-8283	Major	.	Jing Zhao	Jing Zhao
HDFS-8276	LazyPersistFileScrubber should be disabled if scrubber interval configured zero	Major	namenode	Surendra Singh Lilhore	Surendra Singh Lilhore
HADOOP-11889	Make checkstyle runnable from root project	Major	build, test	Gera Shegalov	Gera Shegalov
HDFS-8213	DFSClient should use hdfs.client.htrace HTrace configuration prefix rather than hadoop.htrace	Critical	.	Billie Rinaldi	Colin P. McCabe
HDFS-8229	LAZY_PERSIST file gets deleted after NameNode restart.	Major	namenode	Surendra Singh Lilhore	Surendra Singh Lilhore
YARN-2893	AMLaucher: sporadic job failures due to EOFException in readTokenStorageStream	Major	resourcemanager	Gera Shegalov	zhihai xu
HADOOP-11491	HarFs incorrectly declared as requiring an authority	Critical	fs	Gera Shegalov	Brahma Reddy Battula
HADOOP-11900	Add failIfNoTests=false to hadoop-build-tools pom	Major	test	Gera Shegalov	Gera Shegalov
MAPREDUCE-6345	Documentation fix for when CRLA is enabled for MRAppMaster logs	Trivial	documentation	Rohit Agarwal	Rohit Agarwal
YARN-2454	Fix compareTo of variable UNBOUNDED in o.a.h.y.util.resource.Resources.	Major	.	Xu Yang	Xu Yang
YARN-1993	Cross-site scripting vulnerability in TextView.java	Major	webapp	Ted Yu	Kenji Kikushima
MAPREDUCE-5905	CountersStrings.toEscapedCompactStrings outputs unnecessary “null” strings	Minor	.	Akira Ajisaka	Akira Ajisaka
MAPREDUCE-6349	Fix typo in property org.apache.hadoop.mapreduce.lib.chain.Chain.REDUCER_INPUT_VALUE_CLASS	Minor	.	Ray Chiang	Ray Chiang
HADOOP-9658	SnappyCodec#checkNativeCodeLoaded may unexpectedly fail when native code is not loaded	Major	.	Zhijie Shen	Zhijie Shen
YARN-3097	Logging of resource recovery on NM restart has redundancies	Minor	nodemanager	Jason Lowe	Eric Payne
HDFS-8290	WebHDFS calls before namesystem initialization can cause NullPointerException.	Minor	webhdfs	Chris Nauroth	Chris Nauroth
MAPREDUCE-5649	Reduce cannot use more than 2G memory for the final merge	Major	mrv2	stanley shi	Gera Shegalov
MAPREDUCE-6259	IllegalArgumentException due to missing job submit time	Major	jobhistoryserver	zhihai xu	zhihai xu
YARN-3375	NodeHealthScriptRunner.shouldRun() check is performing 3 times for starting NodeHealthScriptRunner	Minor	nodemanager	Devaraj K	Devaraj K
YARN-2725	Adding test cases of retrying requests about ZKRMStateStore	Major	.	Tsuyoshi Ozawa	Tsuyoshi Ozawa
MAPREDUCE-6165	[JDK8] TestCombineFileInputFormat failed on JDK8	Minor	.	Wei Yan	Akira Ajisaka
HADOOP-11328	ZKFailoverController does not log Exception when doRun raises errors	Major	ha	Tianyin Xu	Tianyin Xu
HADOOP-11916	TestStringUtils#testLowerAndUpperStrings failed on MAC due to a JVM bug	Minor	.	Ming Ma	Ming Ma
YARN-3552	RM Web UI shows -1 running containers for completed apps	Trivial	webapp	Rohith Sharma K S	Rohith Sharma K S
HADOOP-11120	hadoop fs -rmr gives wrong advice	Major	.	Allen Wittenauer	Juliet Hougland
YARN-3396	Handle URISyntaxException in ResourceLocalizationService	Major	nodemanager	Chengbing Liu	Brahma Reddy Battula
YARN-2123	Progress bars in Web UI always at 100% due to non-US locale	Major	webapp	Johannes Simon	Akira Ajisaka
HDFS-8305	HDFS INotify: the destination field of RenameOp should always end with the file name	Major	.	Colin P. McCabe	Colin P. McCabe
HADOOP-11917	test-patch.sh should work with ${BASEDIR}/patchprocess setups	Blocker	.	Allen Wittenauer	Allen Wittenauer
HDFS-7847	Modify NNThroughputBenchmark to be able to operate on a remote NameNode	Major	.	Colin P. McCabe	Charles Lamb
HDFS-8219	setStoragePolicy with folder behavior is different after cluster restart	Major	.	Peter Shi	Surendra Singh Lilhore
HADOOP-11898	add nfs3 and portmap starting command in hadoop-daemon.sh in branch-2	Minor	bin, nfs	Brandon Li	Brandon Li
HADOOP-11926	test-patch.sh mv does wrong math	Major	.	Allen Wittenauer	Allen Wittenauer
HADOOP-11912	Extra configuration key used in TraceUtils should respect prefix	Minor	.	Masatake Iwasaki	Masatake Iwasaki
YARN-3582	NPE in WebAppProxyServlet	Major	.	Jian He	Jian He
HDFS-2484	checkLease should throw FileNotFoundException when file does not exist	Major	namenode	Konstantin Shvachko	Rakesh R
YARN-3385	Race condition: KeeperException$NoNodeException will cause RM shutdown during ZK node deletion.	Critical	resourcemanager	zhihai xu	zhihai xu
HDFS-7833	DataNode reconfiguration does not recalculate valid volumes required, based on configured failed volumes tolerated.	Major	datanode	Chris Nauroth	Lei (Eddy) Xu
YARN-3577	Misspelling of threshold in log4j.properties for tests	Minor	test	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-8325	Misspelling of threshold in log4j.properties for tests	Minor	test	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-10387	Misspelling of threshold in log4j.properties for tests in hadoop-common-project	Minor	conf, test	Kenji Kikushima	Brahma Reddy Battula
MAPREDUCE-6356	Misspelling of threshold in log4j.properties for tests	Minor	test	Brahma Reddy Battula	Brahma Reddy Battula
YARN-3523	Cleanup ResourceManagerAdministrationProtocol interface audience	Major	client, resourcemanager	Wangda Tan	Naganarasimha G R
HDFS-7980	Incremental BlockReport will dramatically slow down the startup of a namenode	Major	.	Hui Zheng	Walter Su
HADOOP-11936	Dockerfile references a removed image	Major	.	Allen Wittenauer	Allen Wittenauer
YARN-3584	[Log mesage correction] : MIssing space in Diagnostics message	Trivial	.	nijel	nijel
HDFS-8321	CacheDirectives and CachePool operations should throw RetriableException in safemode	Major	.	Haohui Mai	Haohui Mai
HDFS-8037	CheckAccess in WebHDFS silently accepts malformed FsActions parameters	Minor	webhdfs	Jake Low	Walter Su
YARN-1832	Fix wrong MockLocalizerStatus#equals implementation	Minor	nodemanager	Hong Zhiguo	Hong Zhiguo
YARN-3572	Correct typos in WritingYarnApplications.md	Minor	documentation	Sandeep Khurana	Gabor Liptak
HADOOP-11922	Misspelling of threshold in log4j.properties for tests in hadoop-tools	Minor	.	Brahma Reddy Battula	Gabor Liptak
HDFS-8257	Namenode rollingUpgrade option is incorrect in document	Major	documentation	J.Andreina	J.Andreina
HDFS-8067	haadmin prints out stale help messages	Minor	hdfs-client	Ajith S	Ajith S
YARN-3592	Fix typos in RMNodeLabelsManager	Trivial	resourcemanager	Junping Du	Sunil G
HDFS-8174	Update replication count to live rep count in fsck report	Minor	.	J.Andreina	J.Andreina
HDFS-6291	FSImage may be left unclosed in BootstrapStandby#doRun()	Minor	ha	Ted Yu	Sanghyun Yun
YARN-3358	Audit log not present while refreshing Service ACLs	Minor	resourcemanager	Varun Saxena	Varun Saxena
YARN-3589	RM and AH web UI display DOCTYPE wrongly	Major	webapp	Rohith Sharma K S	Rohith Sharma K S
HDFS-7998	HDFS Federation : Command mentioned to add a NN to existing federated cluster is wrong	Minor	documentation	Ajith S	Ajith S
HDFS-8222	Remove usage of "dfsadmin -upgradeProgress " from document which is no longer supported	Major	documentation	J.Andreina	J.Andreina
HDFS-8187	Remove usage of “-setStoragePolicy” and “-getStoragePolicy” using dfsadmin cmd (as it is not been supported)	Major	documentation	J.Andreina	J.Andreina
HDFS-8175	Provide information on snapshotDiff for supporting the comparison between snapshot and current status	Major	documentation	J.Andreina	J.Andreina
MAPREDUCE-6342	Make POM project names consistent	Minor	build	Rohith Sharma K S	Rohith Sharma K S
HDFS-6576	Datanode log is generating at root directory in security mode	Minor	datanode, scripts	Surendra Singh Lilhore	Surendra Singh Lilhore
HADOOP-11877	SnappyDecompressor's Logger class name is wrong	Major	conf	Surendra Singh Lilhore	Surendra Singh Lilhore
HDFS-3384	DataStreamer thread should be closed immediatly when failed to setup a PipelineForAppendOrRecovery	Major	hdfs-client	Brahma Reddy Battula	Uma Maheswara Rao G
YARN-3554	Default value for maximum nodemanager connect wait time is too high	Major	.	Jason Lowe	Naganarasimha G R
HDFS-7894	Rolling upgrade readiness is not updated in jmx until query command is issued.	Critical	.	Kihwal Lee	Brahma Reddy Battula
YARN-3600	AM container link is broken (on a killed application, at least)	Major	.	Sergey Shelukhin	Naganarasimha G R
HDFS-8346	libwebhdfs build fails during link due to unresolved external symbols.	Major	native	Chris Nauroth	Chris Nauroth
HDFS-8274	NFS configuration nfs.dump.dir not working	Major	nfs	Ajith S	Ajith S
HDFS-8340	Fix NFS documentation of nfs.wtmax	Minor	documentation, nfs	Ajith S	Ajith S
HADOOP-10356	Corrections in winutils/chmod.c	Trivial	bin	René Nyffenegger	René Nyffenegger
HADOOP-7165	listLocatedStatus(path, filter) is not redefined in FilterFs	Major	fs	Hairong Kuang	Hairong Kuang
MAPREDUCE-3383	Duplicate job.getOutputValueGroupingComparator() in ReduceTask	Major	.	Binglin Chang	Binglin Chang
HDFS-8311	DataStreamer.transfer() should timeout the socket InputStream.	Major	hdfs-client	Esteban Gutierrez	Esteban Gutierrez
HDFS-8113	Add check for null BlockCollection pointers in BlockInfoContiguous structures	Major	namenode	Chengbing Liu	Chengbing Liu
HADOOP-9729	The example code of org.apache.hadoop.util.Tool is incorrect	Major	util	hellojinjie	hellojinjie
MAPREDUCE-2094	LineRecordReader should not seek into non-splittable, compressed streams.	Major	task	Niels Basjes	Niels Basjes
HDFS-8245	Standby namenode doesn't process DELETED_BLOCK if the add block request is in edit log.	Major	.	Rushabh S Shah	Rushabh S Shah
YARN-3018	Unify the default value for yarn.scheduler.capacity.node-locality-delay in code and default xml file	Trivial	capacityscheduler	nijel	nijel
HDFS-8326	Documentation about when checkpoints are run is out of date	Major	documentation	Misty Stanley-Jones	Misty Stanley-Jones
YARN-3604	removeApplication in ZKRMStateStore should also disable watch.	Minor	resourcemanager	zhihai xu	zhihai xu
YARN-3476	Nodemanager can fail to delete local logs if log aggregation fails	Major	log-aggregation, nodemanager	Jason Lowe	Rohith Sharma K S
YARN-3473	Fix RM Web UI configuration for some properties	Minor	resourcemanager	Ray Chiang	Ray Chiang
HDFS-8097	TestFileTruncate is failing intermittently	Major	test	Rakesh R	Rakesh R
YARN-1912	ResourceLocalizer started without any jvm memory control	Major	nodemanager	stanley shi	Masatake Iwasaki
MAPREDUCE-6359	RM HA setup, “Cluster” tab links populated with AM hostname instead of RM	Minor	.	Aroop Maliakkal	yunjiong zhao
MAPREDUCE-6353	Divide by zero error in MR AM when calculating available containers	Major	mr-am	Anubhav Dhoot	Anubhav Dhoot
YARN-3395	FairScheduler: Trim whitespaces when using username for queuename	Major	fairscheduler	zhihai xu	zhihai xu
HDFS-8351	Remove namenode -finalize option from document	Major	documentation	Akira Ajisaka	Akira Ajisaka
YARN-3587	Fix the javadoc of DelegationTokenSecretManager in projects of yarn, etc.	Minor	documentation	Akira Ajisaka	Gabor Liptak
HADOOP-11663	Remove description about Java 6 from docs	Minor	documentation	Masatake Iwasaki	Masatake Iwasaki
HADOOP-11928	Test-patch check for @author tags incorrectly flags removal of @author tags	Major	.	Sean Busbey	Kengo Seki
HADOOP-11951	test-patch should give better info about failures to handle dev-support updates without resetrepo option	Minor	.	Sean Busbey	Sean Busbey
HADOOP-11947	test-patch should return early from determine-issue when run in jenkins mode.	Minor	.	Sean Busbey	Sean Busbey
HDFS-7916	‘reportBadBlocks’ from datanodes to standby Node BPServiceActor goes for infinite loop	Critical	datanode	Vinayakumar B	Rushabh S Shah
YARN-3434	Interaction between reservations and userlimit can result in significant ULF violation	Major	capacityscheduler	Thomas Graves	Thomas Graves
HDFS-8362	Java Compilation Error in TestHdfsConfigFields.java	Major	.	Mohammad Arshad	Mohammad Arshad
MAPREDUCE-6360	TestMapreduceConfigFields is placed in wrong dir, introducing compile error	Major	.	Vinayakumar B	Mohammad Arshad
MAPREDUCE-6361	NPE issue in shuffle caused by concurrent issue between copySucceeded() in one thread and copyFailed() in another thread on the same host	Critical	.	Junping Du	Junping Du
YARN-3629	NodeID is always printed as “null” in node manager initialization log.	Major	.	nijel	nijel
MAPREDUCE-6251	JobClient needs additional retries at a higher level to address not-immediately-consistent dfs corner cases	Major	jobhistoryserver, mrv2	Craig Welch	Craig Welch
MAPREDUCE-6366	mapreduce.terasort.final.sync configuration in TeraSort doesn't work	Trivial	examples	Takuya Fukudome	Takuya Fukudome
HDFS-6300	Prevent multiple balancers from running simultaneously	Critical	balancer & mover	Rakesh R	Rakesh R
HDFS-8358	TestTraceAdmin fails	Major	.	Kihwal Lee	Masatake Iwasaki
HADOOP-11966	Variable cygwin is undefined in hadoop-config.sh when executed through hadoop-daemon.sh.	Critical	scripts	Chris Nauroth	Chris Nauroth
HDFS-8380	Always call addStoredBlock on blocks which have been shifted from one storage to another	Major	.	Colin P. McCabe	Colin P. McCabe
HADOOP-8174	Remove confusing comment in Path#isAbsolute()	Trivial	fs	Suresh Srinivas	Suresh Srinivas
HDFS-8150	Make getFileChecksum fail for blocks under construction	Critical	.	Kihwal Lee	J.Andreina
MAPREDUCE-5708	Duplicate String.format in YarnOutputFiles.getSpillFileForWrite	Minor	.	Konstantin Weitz	Konstantin Weitz
YARN-1519	check if sysconf is implemented before using it	Major	nodemanager	Radim Kolar	Radim Kolar
HDFS-8371	Fix test failure in TestHdfsConfigFields for spanreceiver properties	Major	.	Ray Chiang	Ray Chiang
MAPREDUCE-6273	HistoryFileManager should check whether summaryFile exists to avoid FileNotFoundException causing HistoryFileInfo into MOVE_FAILED state	Minor	jobhistoryserver	zhihai xu	zhihai xu
YARN-2421	RM still allocates containers to an app in the FINISHING state	Major	scheduler	Thomas Graves	Chang Li
YARN-3526	ApplicationMaster tracking URL is incorrectly redirected on a QJM cluster	Major	resourcemanager, webapp	Weiwei Yang	Weiwei Yang
HADOOP-11988	Fix typo in the document for hadoop fs -find	Trivial	documentation	Akira Ajisaka	Kengo Seki
HADOOP-10582	Fix the test case for copying to non-existent dir in TestFsShellCopy	Minor	fs	Kousuke Saruta	Kousuke Saruta
HDFS-8345	Storage policy APIs must be exposed via the FileSystem interface	Major	hdfs-client	Arpit Agarwal	Arpit Agarwal
HDFS-8405	Fix a typo in NamenodeFsck	Minor	namenode	Tsz Wo Nicholas Sze	Takanobu Asanuma
HDFS-6348	SecondaryNameNode not terminating properly on runtime exceptions	Major	namenode	Rakesh R	Rakesh R
YARN-3601	Fix UT TestRMFailover.testRMWebAppRedirect	Critical	resourcemanager, webapp	Weiwei Yang	Weiwei Yang
HDFS-8404	Pending block replication can get stuck using older genstamp	Major	namenode	Nathan Roberts	Nathan Roberts
HADOOP-11973	Ensure ZkDelegationTokenSecretManager namespace znodes get created with ACLs	Major	security	Gregory Chanan	Gregory Chanan
HADOOP-11963	Metrics documentation for FSNamesystem misspells PendingDataNodeMessageCount.	Trivial	documentation	Chris Nauroth	Anu Engineer
YARN-2821	Distributed shell app master becomes unresponsive sometimes	Major	applications/distributed-shell	Varun Vasudev	Varun Vasudev
YARN-3677	Fix findbugs warnings in yarn-server-resourcemanager	Minor	resourcemanager	Akira Ajisaka	Vinod Kumar Vavilapalli
YARN-3681	yarn cmd says “could not find main class ‘queue’” in windows	Blocker	yarn	Sumana Sathish	Varun Saxena
YARN-3654	ContainerLogsPage web UI should not have meta-refresh	Major	yarn	Xuan Gong	Xuan Gong
YARN-3694	Fix dead link for TimelineServer REST API	Minor	documentation	Akira Ajisaka	Jagadesh Kiran N
YARN-3646	Applications are getting stuck some times in case of retry policy forever	Major	client	Raju Bairishetti	Raju Bairishetti
HDFS-8421	Move startFile() and related operations into FSDirWriteFileOp	Major	.	Haohui Mai	Haohui Mai
HDFS-8451	DFSClient probe for encryption testing interprets empty URI property for “enabled”	Blocker	encryption	Steve Loughran	Steve Loughran
YARN-3675	FairScheduler: RM quits when node removal races with continousscheduling on the same node	Critical	fairscheduler	Anubhav Dhoot	Anubhav Dhoot
HADOOP-12014	hadoop-config.cmd displays a wrong error message	Minor	scripts	Kengo Seki	Kengo Seki
HADOOP-11955	Fix a typo in the cluster setup doc	Trivial	.	Kihwal Lee	Yanjun Wang
HDFS-8268	Port conflict log for data node server is not sufficient	Minor	datanode	Mohammad Shahid Khan	Mohammad Shahid Khan
YARN-3594	WintuilsProcessStubExecutor.startStreamReader leaks streams	Trivial	nodemanager	Steve Loughran	Lars Francke
HADOOP-11743	maven doesn't clean all the site files	Minor	documentation	Allen Wittenauer	ramtin
HADOOP-11927	Fix “undefined reference to dlopen” error when compiling libhadooppipes	Major	build, native, tools	Xianyin Xin	Xianyin Xin
YARN-3701	Isolating the error of generating a single app report when getting all apps from generic history service	Blocker	timelineserver	Zhijie Shen	Zhijie Shen
YARN-3707	RM Web UI queue filter doesn't work	Blocker	.	Wangda Tan	Wangda Tan
YARN-2238	filtering on UI sticks even if I move away from the page	Major	webapp	Sangjin Lee	Jian He
HADOOP-8751	NPE in Token.toString() when Token is constructed using null identifier	Minor	security	Vlad Rozov	Kanaka Kumar Avvaru
HADOOP-11969	ThreadLocal initialization in several classes is not thread safe	Critical	io	Sean Busbey	Sean Busbey
YARN-3626	On Windows localized resources are not moved to the front of the classpath when they should be	Major	yarn	Craig Welch	Craig Welch
HADOOP-9891	CLIMiniCluster instructions fail with MiniYarnCluster ClassNotFoundException	Minor	documentation	Steve Loughran	Darrell Taylor
HDFS-8431	hdfs crypto class not found in Windows	Critical	scripts	Sumana Sathish	Anu Engineer
HADOOP-12004	test-patch breaks with reexec in certain situations	Critical	.	Allen Wittenauer	Sean Busbey
YARN-3723	Need to clearly document primaryFilter and otherInfo value type	Critical	timelineserver	Zhijie Shen	Zhijie Shen
HDFS-8407	libhdfs hdfsListDirectory must set errno to 0 on success	Major	native	Juan Yu	Masatake Iwasaki
HDFS-8429	Avoid stuck threads if there is an error in DomainSocketWatcher that stops the thread	Major	.	zhouyingchao	zhouyingchao
HADOOP-11959	WASB should configure client side socket timeout in storage client blob request options	Major	tools	Ivan Mitic	Ivan Mitic
HADOOP-11934	Use of JavaKeyStoreProvider in LdapGroupsMapping causes infinite loop	Blocker	security	Mike Yoder	Larry McCay
HDFS-7401	Add block info to DFSInputStream' WARN message when it adds node to deadNodes	Minor	.	Ming Ma	Mohammad Arshad
HADOOP-12042	Users may see TrashPolicy if hdfs dfs -rm is run	Major	.	Allen Wittenauer	J.Andreina
HDFS-7609	Avoid retry cache collision when Standby NameNode loading edits	Critical	namenode	Carrey Zhan	Ming Ma
HADOOP-11885	hadoop-dist dist-layout-stitching.sh does not work with dash	Major	build	Andrew Wang	Andrew Wang
YARN-3725	App submission via REST API is broken in secure mode due to Timeline DT service address is empty	Blocker	resourcemanager, timelineserver	Zhijie Shen	Zhijie Shen
HADOOP-12037	Fix wrong classname in example configuration of hadoop-auth documentation	Trivial	documentation	Masatake Iwasaki	Masatake Iwasaki
HDFS-8256	fsck "-storagepolicies , -blockId ,-replicaDetails " options are missed out in usage and from documentation	Major	documentation	J.Andreina	J.Andreina
HDFS-8486	DN startup may cause severe data loss	Blocker	datanode	Daryn Sharp	Daryn Sharp
HDFS-8386	Improve synchronization of ‘streamer’ reference in DFSOutputStream	Major	hdfs-client	Rakesh R	Rakesh R
HDFS-8513	Rename BlockPlacementPolicyRackFaultTolarent to BlockPlacementPolicyRackFaultTolerant	Minor	namenode	Andrew Wang	Andrew Wang
HADOOP-11991	test-patch.sh isn't re-executed even if smart-apply-patch.sh is modified	Major	test	Kengo Seki	Kengo Seki
HDFS-8270	create() always retried with hardcoded timeout when file already exists with open lease	Major	hdfs-client	Andrey Stepachev	J.Andreina
HDFS-8470	fsimage loading progress should update inode, delegation token and cache pool count.	Minor	namenode	tongshiquan	Surendra Singh Lilhore
HDFS-8523	Remove usage information on unsupported operation “fsck -showprogress” from branch-2	Major	documentation	J.Andreina	J.Andreina
HDFS-3716	Purger should remove stale fsimage ckpt files	Minor	namenode	suja s	J.Andreina
YARN-3751	TestAHSWebServices fails after YARN-3467	Major	.	Zhijie Shen	Sunil G
YARN-3585	NodeManager cannot exit on SHUTDOWN event triggered and NM recovery is enabled	Critical	.	Peng Zhang	Rohith Sharma K S
MAPREDUCE-6374	Distributed Cache File visibility should check permission of full path	Major	.	Chang Li	Chang Li
YARN-3762	FairScheduler: CME on FSParentQueue#getQueueUserAclInfo	Critical	fairscheduler	Karthik Kambatla	Karthik Kambatla
YARN-3749	We should make a copy of configuration when init MiniYARNCluster with multiple RMs	Major	.	Chun Chen	Chun Chen
MAPREDUCE-5965	Hadoop streaming throws error if list of input files is high. Error is: “error=7, Argument list too long at if number of input file is high”	Major	.	Arup Malakar	Wilfred Spiegelenburg
HADOOP-12018	smart-apply-patch.sh fails if the patch edits CR+LF files and is created by ‘git diff --no-prefix’	Minor	build	Akira Ajisaka	Kengo Seki
HADOOP-12019	update BUILDING.txt to include python for ‘mvn site’ in windows	Major	.	Vinayakumar B	Vinayakumar B
MAPREDUCE-6382	Don't escape HTML links in Diagnostics in JHS job overview	Major	.	Siqi Li	Siqi Li
HADOOP-12058	Fix dead links to DistCp and Hadoop Archives pages.	Minor	documentation, site	Kazuho Fujii	Kazuho Fujii
HDFS-8463	Calling DFSInputStream.seekToNewSource just after stream creation causes NullPointerException	Minor	.	Masatake Iwasaki	Masatake Iwasaki
YARN-3764	CapacityScheduler should forbid moving LeafQueue from one parent to another	Blocker	.	Wangda Tan	Wangda Tan
HADOOP-11994	smart-apply-patch wrongly assumes that git is infallible	Major	test	Allen Wittenauer	Kengo Seki
HADOOP-11924	Tolerate JDK-8047340-related exceptions in Shell#isSetSidAvailable preventing class init	Major	.	Gera Shegalov	Tsuyoshi Ozawa
YARN-3733	Fix DominantRC#compare() does not work as expected if cluster resource is empty	Blocker	resourcemanager	Bibin A Chundatt	Rohith Sharma K S
MAPREDUCE-6377	JHS sorting on state column not working in webUi	Minor	jobhistoryserver	Bibin A Chundatt	zhihai xu
MAPREDUCE-6387	Serialize the recently added Task#encryptedSpillKey field at the end	Minor	.	Arun Suresh	Arun Suresh
HADOOP-12056	Use DirectoryStream in DiskChecker#checkDirs to detect errors when listing a directory	Major	util	zhihai xu	zhihai xu
HDFS-8522	Change heavily recorded NN logs from INFO to DEBUG level	Major	namenode	Xiaoyu Yao	Xiaoyu Yao
YARN-3655	FairScheduler: potential livelock due to maxAMShare limitation and container reservation	Critical	fairscheduler	zhihai xu	zhihai xu
HDFS-8539	Hdfs doesnt have class ‘debug’ in windows	Major	scripts	Sumana Sathish	Anu Engineer
YARN-3780	Should use equals when compare Resource in RMNodeImpl#ReconnectNodeTransition	Minor	resourcemanager	zhihai xu	zhihai xu
YARN-3747	TestLocalDirsHandlerService should delete the created test directory logDir2	Minor	test	David Moore	David Moore
HDFS-8554	TestDatanodeLayoutUpgrade fails on Windows.	Major	test	Chris Nauroth	Chris Nauroth
YARN-3778	Fix Yarn resourcemanger CLI usage	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-12054	RPC client should not retry for InvalidToken exceptions	Critical	ipc	Daryn Sharp	Varun Saxena
HDFS-8552	Fix hdfs CLI usage message for namenode and zkfc	Major	.	Xiaoyu Yao	Brahma Reddy Battula
HADOOP-12073	Azure FileSystem PageBlobInputStream does not return -1 on EOF	Major	tools	Ivan Mitic	Ivan Mitic
HDFS-8568	TestClusterId#testFormatWithEmptyClusterIdOption is failing	Major	.	Rakesh R	Rakesh R
HADOOP-7817	RawLocalFileSystem.append() should give FSDataOutputStream with accurate .getPos()	Major	fs	Kristofer Tomasette	Kanaka Kumar Avvaru
MAPREDUCE-6350	JobHistory doesn't support fully-functional search	Critical	jobhistoryserver	Siqi Li	Siqi Li
MAPREDUCE-6389	Fix BaileyBorweinPlouffe CLI usage message	Trivial	.	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-12052	IPC client downgrades all exception types to IOE, breaks callers trying to use them	Critical	.	Steve Loughran	Brahma Reddy Battula
YARN-3785	Support for Resource as an argument during submitApp call in MockRM test class	Minor	resourcemanager	Sunil G	Sunil G
HADOOP-12074	in Shell.java#runCommand() rethrow InterruptedException as InterruptedIOException	Minor	.	Lavkesh Lahngir	Lavkesh Lahngir
HDFS-8566	HDFS documentation about debug commands wrongly identifies them as “hdfs dfs” commands	Major	documentation	Surendra Singh Lilhore	Surendra Singh Lilhore
HDFS-8583	Document that NFS gateway does not work with rpcbind on SLES 11	Major	documentation	Arpit Agarwal	Arpit Agarwal
HDFS-8572	DN always uses HTTP/localhost@REALM principals in SPNEGO	Blocker	.	Haohui Mai	Haohui Mai
YARN-3794	TestRMEmbeddedElector fails because of ambiguous LOG reference	Major	test	Chengbing Liu	Chengbing Liu
HDFS-8593	Calculation of effective layout version mishandles comparison to current layout version in storage.	Major	namenode	Chris Nauroth	Chris Nauroth
HDFS-8596	TestDistributedFileSystem et al tests are broken in branch-2 due to incorrect setting of “datanode” attribute	Blocker	datanode	Yongjun Zhang	Yongjun Zhang
HDFS-8595	TestCommitBlockSynchronization fails in branch-2.7	Major	test	Arpit Agarwal	Arpit Agarwal
HDFS-8607	TestFileCorruption doesn't work as expected	Major	test	Walter Su	Walter Su
HADOOP-12001	Limiting LDAP search conflicts with posixGroup addition	Blocker	security	Patrick White	Patrick White
HADOOP-12078	The default retry policy does not handle RetriableException correctly	Critical	ipc	Arpit Agarwal	Arpit Agarwal
HDFS-8576	Lease recovery should return true if the lease can be released and the file can be closed	Major	namenode	J.Andreina	J.Andreina
HDFS-8592	SafeModeException never get unwrapped	Major	.	Haohui Mai	Haohui Mai
HADOOP-12095	org.apache.hadoop.fs.shell.TestCount fails	Major	test	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-4660	Block corruption can happen during pipeline recovery	Blocker	datanode	Peng Zhang	Kihwal Lee
HDFS-8548	Minicluster throws NPE on shutdown	Major	.	Mike Drob	Surendra Singh Lilhore
YARN-3714	AM proxy filter can not get RM webapp address from yarn.resourcemanager.hostname.rm-id	Minor	.	Masatake Iwasaki	Masatake Iwasaki
HDFS-8551	Fix hdfs datanode CLI usage message	Major	.	Xiaoyu Yao	Brahma Reddy Battula
HADOOP-12076	Incomplete Cache Mechanism in CredentialProvider API	Major	security	Larry McCay	Larry McCay
YARN-3617	Fix WindowsResourceCalculatorPlugin.getCpuFrequency() returning always -1	Minor	.	Georg Berendt	J.Andreina
YARN-3804	Both RM are on standBy state when kerberos user not in yarn.admin.acl	Critical	resourcemanager	Bibin A Chundatt	Varun Saxena
HDFS-8446	Separate safemode related operations in GetBlockLocations()	Minor	.	Haohui Mai	Haohui Mai
HDFS-8615	Correct HTTP method in WebHDFS document	Major	documentation	Akira Ajisaka	Brahma Reddy Battula
MAPREDUCE-6373	The logger reports total input paths but it is referring to input files	Trivial	.	Andi Chirita Amdocs	Bibin A Chundatt
YARN-3824	Fix two minor nits in member variable properties of YarnConfiguration	Trivial	yarn	Ray Chiang	Ray Chiang
HADOOP-12100	ImmutableFsPermission should not override applyUmask since that method doesn't modify the FsPermission	Major	.	Robert Kanter	Bibin A Chundatt
YARN-3802	Two RMNodes for the same NodeId are used in RM sometimes after NM is reconnected.	Major	resourcemanager	zhihai xu	zhihai xu
HDFS-8633	Fix setting of dfs.datanode.readahead.bytes in hdfs-default.xml to match DFSConfigKeys	Minor	datanode	Ray Chiang	Ray Chiang
HDFS-8626	Reserved RBW space is not released if creation of RBW File fails	Blocker	.	Kanaka Kumar Avvaru	Kanaka Kumar Avvaru
MAPREDUCE-6405	NullPointerException in App Attempts page	Major	.	Siqi Li	Siqi Li
HADOOP-12103	Small refactoring of DelegationTokenAuthenticationFilter to allow code sharing	Minor	security	Yongjun Zhang	Yongjun Zhang
HDFS-8337	Accessing httpfs via webhdfs doesn't work from a jar with kerberos	Major	security, webhdfs	Yongjun Zhang	Yongjun Zhang
MAPREDUCE-6403	Fix typo in the usage of NNBench	Trivial	documentation	Akira Ajisaka	Jagadesh Kiran N
HDFS-8480	Fix performance and timeout issues in HDFS-7929 by using hard-links to preserve old edit logs instead of copying them	Critical	.	Zhe Zhang	Zhe Zhang
MAPREDUCE-5948	org.apache.hadoop.mapred.LineRecordReader does not handle multibyte record delimiters well	Critical	.	Kris Geusebroek	Akira Ajisaka
HDFS-8542	WebHDFS getHomeDirectory behavior does not match specification	Major	webhdfs	Jakob Homan	Kanaka Kumar Avvaru
YARN-3842	NMProxy should retry on NMNotYetReadyException	Critical	.	Karthik Kambatla	Robert Kanter
YARN-3835	hadoop-yarn-server-resourcemanager test package bundles core-site.xml, yarn-site.xml	Minor	resourcemanager	Vamsee Yarlagadda	Vamsee Yarlagadda
MAPREDUCE-6410	Aggregated Logs Deletion doesnt work after refreshing Log Retention Settings in secure cluster	Critical	.	Zhang Wei	Varun Saxena
MAPREDUCE-6400	Multiple shuffle transfer fails because input is closed too early	Blocker	task	Akira Ajisaka	Brahma Reddy Battula
YARN-3809	Failed to launch new attempts because ApplicationMasterLauncher's threads all hang	Major	resourcemanager	Jun Gong	Jun Gong
YARN-3832	Resource Localization fails on a cluster due to existing cache directories	Critical	nodemanager	Ranga Swamy	Brahma Reddy Battula
YARN-3790	usedResource from rootQueue metrics may get stale data for FS scheduler after recovering the container	Major	fairscheduler, test	Rohith Sharma K S	zhihai xu
HADOOP-11958	MetricsSystemImpl fails to show backtrace when an error occurs	Major	.	Jason Lowe	Jason Lowe
HDFS-8646	Prune cached replicas from DatanodeDescriptor state on replica invalidation	Major	caching	Andrew Wang	Andrew Wang
YARN-3826	Race condition in ResourceTrackerService leads to wrong diagnostics messages	Major	resourcemanager	Chengbing Liu	Chengbing Liu
YARN-3745	SerializedException should also try to instantiate internal exception with the default constructor	Major	.	Lavkesh Lahngir	Lavkesh Lahngir
MAPREDUCE-6413	TestLocalJobSubmission is failing with unknown host	Major	test	Jason Lowe	zhihai xu
HDFS-8665	Fix replication check in DFSTestUtils#waitForReplication	Trivial	test	Andrew Wang	Andrew Wang
HADOOP-8151	Error handling in snappy decompressor throws invalid exceptions	Major	io, native	Todd Lipcon	Matt Foley
YARN-3850	NM fails to read files from full disks which can lead to container logs being lost and other issues	Blocker	log-aggregation, nodemanager	Varun Saxena	Varun Saxena
HDFS-8656	Preserve compatibility of ClientProtocol#rollingUpgrade after finalization	Critical	rolling upgrades	Andrew Wang	Andrew Wang
YARN-3859	LeafQueue doesn't print user properly for application add	Minor	capacityscheduler	Devaraj K	Varun Saxena
HDFS-8681	BlockScanner is incorrectly disabled by default	Blocker	datanode	Andrew Wang	Arpit Agarwal
YARN-3860	rmadmin -transitionToActive should check the state of non-target node	Major	resourcemanager	Masatake Iwasaki	Masatake Iwasaki
HDFS-8586	Dead Datanode is allocated for write when client is from deadnode	Critical	.	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-12119	hadoop fs -expunge does not work for federated namespace	Major	.	Vrushali C	J.Andreina
HDFS-8628	Update missing command option for fetchdt	Major	documentation	J.Andreina	J.Andreina
YARN-3695	ServerProxy (NMProxy, etc.) shouldn't retry forever for non network exception.	Major	.	Junping Du	Raju Bairishetti
HADOOP-12089	StorageException complaining " no lease ID" when updating FolderLastModifiedTime in WASB	Major	tools	Duo Xu	Duo Xu
YARN-3770	SerializedException should also handle java.lang.Error	Major	.	Lavkesh Lahngir	Lavkesh Lahngir
HDFS-8687	Remove the duplicate usage message from Dfsck.java	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-12107	long running apps may have a huge number of StatisticsData instances under FileSystem	Critical	fs	Sangjin Lee	Sangjin Lee
HDFS-8579	Update HDFS usage with missing options	Minor	.	J.Andreina	J.Andreina
HADOOP-12154	FileSystem#getUsed() returns the file length only from root ‘/’	Major	.	tongshiquan	J.Andreina
YARN-3768	ArrayIndexOutOfBoundsException with empty environment variables	Major	yarn	Joe Ferner	zhihai xu
HADOOP-10798	globStatus() should always return a sorted list of files	Minor	.	Felix Borchers	Colin P. McCabe
HADOOP-12124	Add HTrace support for FsShell	Major	.	Colin P. McCabe	Colin P. McCabe
HADOOP-12159	Move DistCpUtils#compareFs() to org.apache.hadoop.fs.FileUtil and fix for HA namespaces	Major	.	Ray Chiang	Ray Chiang
MAPREDUCE-6121	JobResourceUpdater#compareFs() doesn't handle HA namespaces	Major	mrv2	Thomas Graves	Ray Chiang
HADOOP-12116	Fix unrecommended syntax usages in hadoop/hdfs/yarn script for cygwin in branch-2	Major	scripts	Li Lu	Li Lu
HADOOP-12164	Fix TestMove and TestFsShellReturnCode failed to get command name using reflection.	Minor	.	Lei (Eddy) Xu	Lei (Eddy) Xu
YARN-3823	Fix mismatch in default values for yarn.scheduler.maximum-allocation-vcores property	Minor	.	Ray Chiang	Ray Chiang
YARN-3830	AbstractYarnScheduler.createReleaseCache may try to clean a null attempt	Major	scheduler	nijel	nijel
HDFS-8706	Fix typo in datanode startup options in HDFSCommands.html	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
MAPREDUCE-6420	Interrupted Exception in LocalContainerLauncher should be logged in warn/info level	Major	.	Chang Li	Chang Li
MAPREDUCE-6418	MRApp should not shutdown LogManager during shutdown	Major	test	Chang Li	Chang Li
YARN-3793	Several NPEs when deleting local files on NM recovery	Major	nodemanager	Karthik Kambatla	Varun Saxena
HDFS-8666	speedup TestMover	Major	test	Walter Su	Walter Su
HADOOP-12171	Shorten overly-long htrace span names for server	Major	tracing	Colin P. McCabe	Colin P. McCabe
YARN-3875	FSSchedulerNode#reserveResource() doesn't print Application Id properly in log	Minor	.	Bibin A Chundatt	Bibin A Chundatt
YARN-3508	Prevent processing preemption events on the main RM dispatcher	Major	resourcemanager, scheduler	Jason Lowe	Varun Saxena
HADOOP-12173	NetworkTopology#add calls NetworkTopology#toString always	Major	.	Inigo Goiri	Inigo Goiri
HDFS-8577	Avoid retrying to recover lease on a file which does not exist	Major	.	J.Andreina	J.Andreina
YARN-3882	AggregatedLogFormat should close aclScanner and ownerScanner after create them.	Minor	nodemanager	zhihai xu	zhihai xu
MAPREDUCE-6425	ShuffleHandler passes wrong “base” parameter to getMapOutputInfo if mapId is not in the cache.	Major	mrv2, nodemanager	zhihai xu	zhihai xu
HADOOP-12186	ActiveStandbyElector shouldn't call monitorLockNodeAsync multiple times	Major	ha	zhihai xu	zhihai xu
HDFS-8686	WebHdfsFileSystem#getXAttr(Path p, final String name) doesn't work if namespace is in capitals	Major	webhdfs	Jagadesh Kiran N	Kanaka Kumar Avvaru
YARN-3837	javadocs of TimelineAuthenticationFilterInitializer give wrong prefix for auth options	Minor	timelineserver	Steve Loughran	Bibin A Chundatt
HADOOP-12117	Potential NPE from Configuration#loadProperty with allowNullValueProperties set.	Minor	conf	zhihai xu	zhihai xu
MAPREDUCE-6038	A boolean may be set error in the Word Count v2.0 in MapReduce Tutorial	Minor	.	Pei Ma	Tsuyoshi Ozawa
YARN-3892	NPE on RMStateStore#serviceStop when CapacityScheduler#serviceInit fails	Minor	.	Bibin A Chundatt	Bibin A Chundatt
YARN-3690	[JDK8] ‘mvn site’ fails	Major	api, site	Akira Ajisaka	Brahma Reddy Battula
HADOOP-12202	releasedocmaker drops missing component and assignee entries	Blocker	yetus	Allen Wittenauer	Allen Wittenauer
HDFS-8642	Make TestFileTruncate more reliable	Minor	.	Rakesh R	Rakesh R
HADOOP-11878	FileContext.java # fixRelativePart should check for not null for a more informative exception	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-12201	Add tracing to FileSystem#createFileSystem and Globber#glob	Major	.	Colin P. McCabe	Colin P. McCabe
HADOOP-12200	TestCryptoStreamsWithOpensslAesCtrCryptoCodec should be skipped in non-native profile	Minor	test	Masatake Iwasaki	Masatake Iwasaki
MAPREDUCE-6426	TestShuffleHandler#testGetMapOutputInfo is failing	Major	test	Devaraj K	zhihai xu
HDFS-8729	Fix testTruncateWithDataNodesRestartImmediately occasionally failed	Minor	.	Walter Su	Walter Su
YARN-3888	ApplicationMaster link is broken in RM WebUI when appstate is NEW	Minor	resourcemanager	Bibin A Chundatt	Bibin A Chundatt
HDFS-8749	Fix findbugs warning in BlockManager.java	Minor	.	Akira Ajisaka	Brahma Reddy Battula
HDFS-2956	calling fetchdt without a --renewer argument throws NPE	Major	security	Todd Lipcon	Vinayakumar B
HDFS-8751	Remove setBlocks API from INodeFile and misc code cleanup	Major	namenode	Zhe Zhang	Zhe Zhang
YARN-3849	Too much of preemption activity causing continuos killing of containers across queues	Critical	capacityscheduler	Sunil G	Sunil G
YARN-3917	getResourceCalculatorPlugin for the default should intercept all exceptions	Major	.	Gera Shegalov	Gera Shegalov
YARN-3894	RM startup should fail for wrong CS xml NodeLabel capacity configuration	Critical	capacityscheduler	Bibin A Chundatt	Bibin A Chundatt
MAPREDUCE-6421	Fix findbugs warning in RMContainerAllocator.reduceNodeLabelExpression	Major	.	Ray Chiang	Brahma Reddy Battula
HADOOP-12191	Bzip2Factory is not thread safe	Major	io	Jason Lowe	Brahma Reddy Battula
HDFS-7608	hdfs dfsclient newConnectedPeer has no write timeout	Major	fuse-dfs, hdfs-client	zhangshilong	Xiaoyu Yao
HADOOP-12153	ByteBufferReadable doesn't declare @InterfaceAudience and @InterfaceStability	Minor	fs	Steve Loughran	Brahma Reddy Battula
HDFS-8778	TestBlockReportRateLimiting#testLeaseExpiration can deadlock	Major	test	Arpit Agarwal	Arpit Agarwal
HADOOP-10615	FileInputStream in JenkinsHash#main() is never closed	Minor	.	Ted Yu	Chen He
HADOOP-12240	Fix tests requiring native library to be skipped in non-native profile	Minor	test	Masatake Iwasaki	Masatake Iwasaki
YARN-3805	Update the documentation of Disk Checker based on YARN-90	Minor	documentation	Masatake Iwasaki	Masatake Iwasaki
HDFS-8767	RawLocalFileSystem.listStatus() returns null for UNIX pipefile	Critical	.	Haohui Mai	Kanaka Kumar Avvaru
YARN-3885	ProportionalCapacityPreemptionPolicy doesn't preempt if queue is more than 2 level	Blocker	yarn	Ajith S	Ajith S
YARN-3453	Fair Scheduler: Parts of preemption logic uses DefaultResourceCalculator even in DRF mode causing thrashing	Major	fairscheduler	Ashwin Shankar	Arun Suresh
YARN-3535	Scheduler must re-request container resources when RMContainer transitions from ALLOCATED to KILLED	Critical	capacityscheduler, fairscheduler, resourcemanager	Peng Zhang	Peng Zhang
YARN-3905	Application History Server UI NPEs when accessing apps run after RM restart	Major	timelineserver	Eric Payne	Eric Payne
HADOOP-12235	hadoop-openstack junit & mockito dependencies should be “provided”	Minor	build, fs/swift	Steve Loughran	Ted Yu
HADOOP-12209	Comparable type should be in FileStatus	Minor	fs	Yong Zhang	Yong Zhang
HADOOP-12088	KMSClientProvider uses equalsIgnoreCase(“application/json”)	Major	kms	Steve Loughran	Brahma Reddy Battula
HADOOP-12051	ProtobufRpcEngine.invoke() should use Exception.toString() over getMessage in logging/span events	Minor	ipc	Steve Loughran	Varun Saxena
HADOOP-12237	releasedocmaker.py doesn't work behind a proxy	Major	yetus	Tsuyoshi Ozawa	Tsuyoshi Ozawa
HDFS-7582	Enforce maximum number of ACL entries separately per access and default.	Major	namenode	Vinayakumar B	Vinayakumar B
HDFS-8773	Few FSNamesystem metrics are not documented in the Metrics page	Major	documentation	Rakesh R	Rakesh R
YARN-3878	AsyncDispatcher can hang while stopping if it is configured for draining events on stop	Critical	.	Varun Saxena	Varun Saxena
HDFS-7728	Avoid updating quota usage while loading edits	Major	.	Jing Zhao	Jing Zhao
HADOOP-11962	Sasl message with MD5 challenge text shouldn't be LOG out even in debug level.	Critical	ipc, security	Junping Du	Junping Du
HADOOP-12017	Hadoop archives command should use configurable replication factor when closing	Major	.	Zhe Zhang	Bibin A Chundatt
HADOOP-12239	StorageException complaining " no lease ID" when updating FolderLastModifiedTime in WASB	Major	fs/azure, tools	Duo Xu	Duo Xu
YARN-3932	SchedulerApplicationAttempt#getResourceUsageReport and UserInfo should based on total-used-resources	Major	resourcemanager	Bibin A Chundatt	Bibin A Chundatt
YARN-3954	TestYarnConfigurationFields#testCompareConfigurationClassAgainstXml fails in trunk	Major	.	Varun Saxena	Varun Saxena
YARN-2019	Retrospect on decision of making RM crashed if any exception throw in ZKRMStateStore	Critical	.	Junping Du	Jian He
HDFS-8797	WebHdfsFileSystem creates too many connections for pread	Major	webhdfs	Jing Zhao	Jing Zhao
YARN-3941	Proportional Preemption policy should try to avoid sending duplicate PREEMPT_CONTAINER event to scheduler	Major	capacityscheduler	Sunil G	Sunil G
YARN-3900	Protobuf layout of yarn_security_token causes errors in other protos that include it	Major	.	Anubhav Dhoot	Anubhav Dhoot
YARN-3845	Scheduler page does not render RGBA color combinations in IE11	Minor	.	Jagadesh Kiran N	Mohammad Shahid Khan
HDFS-8806	Inconsistent metrics: number of missing blocks with replication factor 1 not properly cleared	Major	.	Zhe Zhang	Zhe Zhang
YARN-3967	Fetch the application report from the AHS if the RM does not know about it	Major	.	Mit Desai	Mit Desai
YARN-3957	FairScheduler NPE In FairSchedulerQueueInfo causing scheduler page to return 500	Major	fairscheduler	Anubhav Dhoot	Anubhav Dhoot
YARN-3925	ContainerLogsUtils#getContainerLogFile fails to read container log files from full disks.	Critical	nodemanager	zhihai xu	zhihai xu
YARN-3973	Recent changes to application priority management break reservation system from YARN-1051	Major	resourcemanager	Carlo Curino	Carlo Curino
YARN-3958	TestYarnConfigurationFields should be moved to hadoop-yarn-api module	Major	.	Varun Saxena	Varun Saxena
HDFS-8810	Correct assertions in TestDFSInotifyEventInputStream class.	Minor	test	Surendra Singh Lilhore	Surendra Singh Lilhore
HDFS-8785	TestDistributedFileSystem is failing in trunk	Major	test	Arpit Agarwal	Xiaoyu Yao
YARN-2194	Cgroups cease to work in RHEL7	Critical	nodemanager	Wei Yan	Wei Yan
YARN-3846	RM Web UI queue filter is not working	Major	yarn	Mohammad Shahid Khan	Mohammad Shahid Khan
HADOOP-12245	References to misspelled REMAINING_QUATA in FileSystemShell.md	Minor	documentation	Gera Shegalov	Gabor Liptak
YARN-3982	container-executor parsing of container-executor.cfg broken in trunk and branch-2	Blocker	nodemanager	Varun Vasudev	Varun Vasudev
HADOOP-12175	FsShell must load SpanReceiverHost to support tracing	Major	tracing	Masatake Iwasaki	Masatake Iwasaki
HDFS-8670	Better to exclude decommissioned nodes for namenode NodeUsage JMX	Major	.	Ming Ma	J.Andreina
HADOOP-10945	4-digit octal umask permissions throws a parse error	Major	fs	Jason Lowe	Chang Li
YARN-3919	NPEs' while stopping service after exception during CommonNodeLabelsManager#start	Trivial	resourcemanager	Varun Saxena	Varun Saxena
YARN-3963	AddNodeLabel on duplicate label addition shows success	Minor	.	Bibin A Chundatt	Bibin A Chundatt
MAPREDUCE-6433	launchTime may be negative	Major	jobhistoryserver, mrv2	Allen Wittenauer	zhihai xu
YARN-3990	AsyncDispatcher may overloaded with RMAppNodeUpdateEvent when Node is connected/disconnected	Critical	resourcemanager	Rohith Sharma K S	Bibin A Chundatt
HDFS-6860	BlockStateChange logs are too noisy	Major	namenode	Arpit Agarwal	Chang Li
HADOOP-12268	AbstractContractAppendTest#testRenameFileBeingAppended misses rename operation.	Major	test	zhihai xu	zhihai xu
HDFS-8847	change TestHDFSContractAppend to not override testRenameFileBeingAppended method.	Major	test	zhihai xu	zhihai xu
HDFS-8850	VolumeScanner thread exits with exception if there is no block pool to be scanned but there are suspicious blocks	Major	datanode	Colin P. McCabe	Colin P. McCabe
HDFS-8844	TestHDFSCLI does not cleanup the test directory	Minor	test	Akira Ajisaka	Masatake Iwasaki
HADOOP-12274	Remove direct download link from BUILDING.txt	Minor	documentation	Caleb Severn	Caleb Severn
HADOOP-12302	Fix native compilation on Windows after HADOOP-7824	Blocker	.	Vinayakumar B	Vinayakumar B
YARN-3983	Make CapacityScheduler to easier extend application allocation logic	Major	.	Wangda Tan	Wangda Tan
HADOOP-12304	Applications using FileContext fail with the default file system configured to be wasb/s3/etc.	Blocker	fs	Chris Nauroth	Chris Nauroth
HADOOP-11932	MetricsSinkAdapter hangs when being stopped	Critical	.	Jian He	Brahma Reddy Battula
HDFS-8856	Make LeaseManager#countPath O(1)	Major	namenode	Arpit Agarwal	Arpit Agarwal
HDFS-8772	Fix TestStandbyIsHot#testDatanodeRestarts which occasionally fails	Major	.	Walter Su	Walter Su
YARN-3966	Fix excessive loggings in CapacityScheduler	Major	.	Jian He	Jian He
HDFS-8866	Typo in docs: Rumtime -> Runtime	Trivial	documentation, webhdfs	Jakob Homan	Gabor Liptak
YARN-3999	RM hangs on draining events	Major	.	Jian He	Jian He
YARN-4026	FiCaSchedulerApp: ContainerAllocator should be able to choose how to order pending resource requests	Major	.	Wangda Tan	Wangda Tan
HDFS-8879	Quota by storage type usage incorrectly initialized upon namenode restart	Major	namenode	Kihwal Lee	Xiaoyu Yao
HADOOP-12258	Need translate java.nio.file.NoSuchFileException to FileNotFoundException to avoid regression	Critical	fs	zhihai xu	zhihai xu
YARN-4005	Completed container whose app is finished is not removed from NMStateStore	Major	.	Jun Gong	Jun Gong
YARN-4047	ClientRMService getApplications has high scheduler lock contention	Major	resourcemanager	Jason Lowe	Jason Lowe
YARN-3987	am container complete msg ack to NM once RM receive it	Major	resourcemanager	sandflee	sandflee
HADOOP-12322	typos in rpcmetrics.java	Trivial	ipc	Anu Engineer	Anu Engineer
HDFS-8565	Typo in dfshealth.html - “Decomissioning”	Trivial	.	nijel	nijel
MAPREDUCE-5817	Mappers get rescheduled on node transition even after all reducers are completed	Major	applicationmaster	Sangjin Lee	Sangjin Lee
HDFS-8891	HDFS concat should keep srcs order	Blocker	.	Yong Zhang	Yong Zhang
MAPREDUCE-6439	AM may fail instead of retrying if RM shuts down during the allocate call	Critical	.	Anubhav Dhoot	Anubhav Dhoot
HDFS-8845	DiskChecker should not traverse the entire tree	Major	.	Chang Li	Chang Li
HDFS-8852	HDFS architecture documentation of version 2.x is outdated about append write support	Major	documentation	Hong Dai Thanh	Ajith S
YARN-3857	Memory leak in ResourceManager with SIMPLE mode	Critical	resourcemanager	mujunchao	mujunchao
YARN-4028	AppBlock page key update and diagnostics value null on recovery	Minor	.	Bibin A Chundatt	Bibin A Chundatt
HDFS-8908	TestAppendSnapshotTruncate may fail with IOException: Failed to replace a bad datanode	Minor	test	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HDFS-8867	Enable optimized block reports	Major	.	Rushabh S Shah	Daryn Sharp
HADOOP-12317	Applications fail on NM restart on some linux distro because NM container recovery declares AM container as LOST	Critical	.	Anubhav Dhoot	Anubhav Dhoot
HDFS-8863	The remaining space check in BlockPlacementPolicyDefault is flawed	Critical	.	Kihwal Lee	Kihwal Lee
HDFS-8922	Link the native_mini_dfs test library with libdl, since IBM Java requires it	Major	build	Ayappan	Ayappan
HDFS-8809	HDFS fsck reports under construction blocks as “CORRUPT”	Major	tools	Sudhir Prakash	Jing Zhao
MAPREDUCE-6454	MapReduce doesn't set the HADOOP_CLASSPATH for jar lib in distributed cache.	Critical	.	Junping Du	Junping Du
MAPREDUCE-6357	MultipleOutputs.write() API should document that output committing is not utilized when input path is absolute	Major	documentation	Ivan Mitic	Dustin Cote
YARN-3986	getTransferredContainers in AbstractYarnScheduler should be present in YarnScheduler interface instead	Major	scheduler	Varun Saxena	Varun Saxena
HADOOP-12347	Fix mismatch parameter name in javadocs of AuthToken#setMaxInactives	Trivial	.	Xiaoyu Yao	Xiaoyu Yao
HDFS-8942	Update hyperlink to rack awareness page in HDFS Architecture documentation	Trivial	documentation	Masatake Iwasaki	Masatake Iwasaki
YARN-3896	RMNode transitioned from RUNNING to REBOOTED because its response id had not been reset synchronously	Major	resourcemanager	Jun Gong	Jun Gong
HDFS-8930	Block report lease may leak if the 2nd full block report comes when NN is still in safemode	Minor	.	Jing Zhao	Jing Zhao
HDFS-8932	NPE thrown in NameNode when try to get “TotalSyncCount” metric before editLogStream initialization	Major	.	Surendra Singh Lilhore	Surendra Singh Lilhore
HADOOP-12352	Delay in checkpointing Trash can leave trash for 2 intervals before deleting	Trivial	trash	Casey Brotherton	Casey Brotherton
HDFS-8846	Add a unit test for INotify functionality across a layout version upgrade	Major	namenode	Zhe Zhang	Zhe Zhang
HDFS-8896	DataNode object isn't GCed when shutdown, because it has GC root in ShutdownHookManager	Minor	test	Walter Su	Walter Su
HDFS-8961	Surpress findbug warnings of o.a.h.hdfs.shortcircuit.DfsClientShmManager.EndpointShmManager in hdfs-client	Major	.	Haohui Mai	Mingliang Liu
HADOOP-12362	Set hadoop.tmp.dir and hadoop.log.dir in pom	Major	.	Charlie Helin	Charlie Helin
HDFS-8969	Clean up findbugs warnings for HDFS-8823 and HDFS-8932	Major	namenode	Anu Engineer	Anu Engineer
HDFS-8963	Fix incorrect sign extension of xattr length in HDFS-8900	Critical	.	Haohui Mai	Colin P. McCabe
YARN-1556	NPE getting application report with a null appId	Minor	client	Steve Loughran	Weiwei Yang
MAPREDUCE-6452	NPE when intermediate encrypt enabled for LocalRunner	Major	.	Bibin A Chundatt	zhihai xu
HDFS-8950	NameNode refresh doesn't remove DataNodes that are no longer in the allowed list	Major	datanode, namenode	Daniel Templeton	Daniel Templeton
HADOOP-12346	Increase some default timeouts / retries for S3a connector	Major	fs/s3	Sean Mackrory	Sean Mackrory
HADOOP-12359	hadoop fs -getmerge doc is wrong	Major	documentation	Daniel Templeton	Jagadesh Kiran N
HADOOP-10365	BufferedOutputStream in FileUtil#unpackEntries() should be closed in finally block	Minor	util	Ted Yu	Kiran Kumar M R
HDFS-8995	Flaw in registration bookeeping can make DN die on reconnect	Critical	.	Kihwal Lee	Kihwal Lee
HDFS-8388	Time and Date format need to be in sync in NameNode UI page	Minor	.	Archana T	Surendra Singh Lilhore
YARN-4073	Unused ApplicationACLsManager in ContainerManagerImpl	Trivial	.	Naganarasimha G R	Naganarasimha G R
HDFS-9003	ForkJoin thread pool leaks	Major	.	Kihwal Lee	Kihwal Lee
HDFS-8885	ByteRangeInputStream used in webhdfs does not override available()	Minor	webhdfs	Shradha Revankar	Shradha Revankar
HADOOP-10318	Incorrect reference to nodeFile in RumenToSLSConverter error message	Minor	.	Ted Yu	Wei Yan
HADOOP-12213	Interrupted exception can occur when Client#stop is called	Minor	.	Oleg Zhurakousky	Kuhu Shukla
HDFS-9009	Send metrics logs to NullAppender by default	Major	logging	Arpit Agarwal	Arpit Agarwal
HDFS-8964	When validating the edit log, do not read at or beyond the file offset that is being written	Major	journal-node, namenode	Zhe Zhang	Zhe Zhang
HDFS-8939	Test(S)WebHdfsFileContextMainOperations failing on branch-2	Major	webhdfs	Jakob Homan	Chris Nauroth
YARN-4103	RM WebServices missing scheme for appattempts logLinks	Major	.	Jonathan Eagles	Jonathan Eagles
YARN-4105	Capacity Scheduler headroom for DRF is wrong	Major	capacityscheduler	Chang Li	Chang Li
MAPREDUCE-6442	Stack trace is missing when error occurs in client protocol provider's constructor	Major	client	Chang Li	Chang Li
YARN-3591	Resource localization on a bad disk causes subsequent containers failure	Major	.	Lavkesh Lahngir	Lavkesh Lahngir
YARN-4121	Typos in capacity scheduler documentation.	Trivial	documentation	Kai Sasaki	Kai Sasaki
YARN-4096	App local logs are leaked if log aggregation fails to initialize for the app	Major	log-aggregation, nodemanager	Jason Lowe	Jason Lowe
HADOOP-12388	Fix components' version information in the web page ‘About the Cluster’	Minor	util	Jun Gong	Jun Gong
HDFS-9033	dfsadmin -metasave prints “NaN” for cache used%	Major	.	Archana T	Brahma Reddy Battula
HDFS-8716	introduce a new config specifically for safe mode block count	Major	.	Chang Li	Chang Li
HDFS-8581	ContentSummary on / skips further counts on yielding lock	Minor	namenode	tongshiquan	J.Andreina
HDFS-6763	Initialize file system-wide quota once on transitioning to active	Major	ha, namenode	Daryn Sharp	Kihwal Lee
MAPREDUCE-6474	ShuffleHandler can possibly exhaust nodemanager file descriptors	Major	mrv2, nodemanager	Nathan Roberts	Kuhu Shukla
YARN-4106	NodeLabels for NM in distributed mode is not updated even after clusterNodelabel addition in RM	Major	.	Bibin A Chundatt	Bibin A Chundatt
YARN-4115	Reduce loglevel of ContainerManagementProtocolProxy to Debug	Minor	.	Anubhav Dhoot	Anubhav Dhoot
HADOOP-12348	MetricsSystemImpl creates MetricsSourceAdapter with wrong time unit parameter.	Major	metrics	zhihai xu	zhihai xu
HDFS-9042	Update document for the Storage policy name	Minor	documentation	J.Andreina	J.Andreina
HDFS-9036	In BlockPlacementPolicyWithNodeGroup#chooseLocalStorage , random node is selected eventhough fallbackToLocalRack is true.	Major	.	J.Andreina	J.Andreina
HADOOP-12407	Test failing: hadoop.ipc.TestSaslRPC	Critical	security, test	Steve Loughran	Steve Loughran
HADOOP-12087	[JDK8] Fix javadoc errors caused by incorrect or illegal tags	Major	documentation	Akira Ajisaka	Akira Ajisaka
HDFS-9069	TestNameNodeMetricsLogger failing -port in use	Critical	test	Steve Loughran	Steve Loughran
HDFS-8996	Consolidate validateLog and scanLog in FJM#EditLogFile	Major	journal-node, namenode	Zhe Zhang	Zhe Zhang
YARN-4151	Fix findbugs errors in hadoop-yarn-server-common module	Major	.	MENG DING	MENG DING
HDFS-9067	o.a.h.hdfs.server.datanode.fsdataset.impl.TestLazyWriter is failing in trunk	Critical	.	Haohui Mai	Surendra Singh Lilhore
MAPREDUCE-6472	MapReduce AM should have java.io.tmpdir=./tmp to be consistent with tasks	Major	mr-am	Jason Lowe	Naganarasimha G R
HADOOP-12374	Description of hdfs expunge command is confusing	Major	documentation, trash	Weiwei Yang	Weiwei Yang
YARN-4078	getPendingResourceRequestForAttempt is present in AbstractYarnScheduler should be present in YarnScheduler interface instead	Minor	resourcemanager	Naganarasimha G R	Naganarasimha G R
HDFS-9072	Fix random failures in TestJMXGet	Critical	test	J.Andreina	J.Andreina
HDFS-9073	Fix failures in TestLazyPersistLockedMemory#testReleaseOnEviction	Critical	test	J.Andreina	J.Andreina
YARN-3433	Jersey tests failing with Port in Use -again	Critical	build, test	Steve Loughran	Brahma Reddy Battula
HADOOP-12417	TestWebDelegationToken failing with port in use	Major	test	Steve Loughran	Mingliang Liu
MAPREDUCE-6481	LineRecordReader may give incomplete record and wrong position/key information for uncompressed input sometimes.	Critical	mrv2	zhihai xu	zhihai xu
MAPREDUCE-5002	AM could potentially allocate a reduce container to a map attempt	Major	mr-am	Jason Lowe	Chang Li
MAPREDUCE-5982	Task attempts that fail from the ASSIGNED state can disappear	Major	mr-am	Jason Lowe	Chang Li
HADOOP-12386	RetryPolicies.RETRY_FOREVER should be able to specify a retry interval	Major	.	Wangda Tan	Sunil G
YARN-3697	FairScheduler: ContinuousSchedulingThread can fail to shutdown	Critical	fairscheduler	zhihai xu	zhihai xu
HDFS-6955	DN should reserve disk space for a full block when creating tmp files	Major	datanode	Arpit Agarwal	Kanaka Kumar Avvaru
HDFS-5802	NameNode does not check for inode type before traversing down a path	Trivial	namenode	Harsh J	Xiao Chen
MAPREDUCE-6460	TestRMContainerAllocator.testAttemptNotFoundCausesRMCommunicatorException fails	Major	test	zhihai xu	zhihai xu
YARN-4167	NPE on RMActiveServices#serviceStop when store is null	Minor	.	Bibin A Chundatt	Bibin A Chundatt
YARN-4113	RM should respect retry-interval when uses RetryPolicies.RETRY_FOREVER	Critical	.	Wangda Tan	Sunil G
YARN-4188	MoveApplicationAcrossQueuesResponse should be an abstract class	Minor	resourcemanager	Giovanni Matteo Fumarola	Giovanni Matteo Fumarola
HDFS-9043	Doc updation for commands in HDFS Federation	Minor	documentation	J.Andreina	J.Andreina
HDFS-9013	Deprecate NameNodeMXBean#getNNStarted in branch2 and remove from trunk	Major	namenode	Surendra Singh Lilhore	Surendra Singh Lilhore
YARN-3975	WebAppProxyServlet should not redirect to RM page if AHS is enabled	Major	.	Mit Desai	Mit Desai
HADOOP-12438	Reset RawLocalFileSystem.useDeprecatedFileStatus in TestLocalFileSystem	Trivial	test	Chris Nauroth	Chris Nauroth
HDFS-9128	TestWebHdfsFileContextMainOperations and TestSWebHdfsFileContextMainOperations fail due to invalid HDFS path on Windows.	Trivial	test	Chris Nauroth	Chris Nauroth
YARN-4152	NM crash with NPE when LogAggregationService#stopContainer called for absent container	Critical	log-aggregation, nodemanager	Bibin A Chundatt	Bibin A Chundatt
YARN-4044	Running applications information changes such as movequeue is not published to TimeLine server	Critical	resourcemanager, timelineserver	Sunil G	Sunil G
HDFS-9076	Log full path instead of inodeId in DFSClient#closeAllFilesBeingWritten()	Major	hdfs-client	Surendra Singh Lilhore	Surendra Singh Lilhore
MAPREDUCE-6484	Yarn Client uses local address instead of RM address as token renewer in a secure cluster when RM HA is enabled.	Major	client, security	zhihai xu	zhihai xu
HADOOP-12437	Allow SecurityUtil to lookup alternate hostnames	Major	net, security	Arpit Agarwal	Arpit Agarwal
HADOOP-12252	LocalDirAllocator should not throw NPE with empty string configuration.	Minor	fs	zhihai xu	zhihai xu
YARN-3624	ApplicationHistoryServer reverses the order of the filters it gets	Major	timelineserver	Mit Desai	Mit Desai
HDFS-9123	Copying from the root to a subdirectory should be forbidden	Minor	fs	Wei-Chiu Chuang	Wei-Chiu Chuang
MAPREDUCE-6480	archive-logs tool may miss applications	Major	.	Robert Kanter	Robert Kanter
HDFS-9107	Prevent NN's unrecoverable death spiral after full GC	Critical	namenode	Daryn Sharp	Daryn Sharp
HDFS-9133	ExternalBlockReader and ReplicaAccessor need to return -1 on read when at EOF	Major	hdfs-client	Colin P. McCabe	Colin P. McCabe
HDFS-9080	update htrace version to 4.0.1	Major	tracing	Colin P. McCabe	Colin P. McCabe
YARN-4204	ConcurrentModificationException in FairSchedulerQueueInfo	Major	.	Anubhav Dhoot	Anubhav Dhoot
HDFS-9106	Transfer failure during pipeline recovery causes permanent write failures	Critical	.	Kihwal Lee	Kihwal Lee
HDFS-9147	Fix the setting of visibleLength in ExternalBlockReader	Major	hdfs-client	Colin P. McCabe	Colin P. McCabe
MAPREDUCE-6492	AsyncDispatcher exit with NPE on TaskAttemptImpl#sendJHStartEventForAssignedFailTask	Critical	.	Bibin A Chundatt	Bibin A Chundatt
HADOOP-12440	TestRPC#testRPCServerShutdown did not produce the desired thread states before shutting down	Minor	.	Xiao Chen	Xiao Chen
HDFS-9092	Nfs silently drops overlapping write requests and causes data copying to fail	Major	nfs	Yongjun Zhang	Yongjun Zhang
YARN-4180	AMLauncher does not retry on failures when talking to NM	Critical	resourcemanager	Anubhav Dhoot	Anubhav Dhoot
HDFS-9141	Thread leak in Datanode#refreshVolumes	Major	datanode	Uma Maheswara Rao G	Uma Maheswara Rao G
YARN-4066	Large number of queues choke fair scheduler	Major	fairscheduler	Johan Gustavsson	Johan Gustavsson
HADOOP-12447	Clean up some htrace integration issues	Major	tracing	Colin P. McCabe	Colin P. McCabe
HDFS-9174	Fix findbugs warnings in FSOutputSummer.tracer and DirectoryScanner$ReportCompiler.currentThread	Critical	.	Yi Liu	Yi Liu
HDFS-9001	DFSUtil.getNsServiceRpcUris() can return too many entries in a non-HA, non-federated cluster	Major	.	Daniel Templeton	Daniel Templeton
HADOOP-12448	TestTextCommand: use mkdirs rather than mkdir to create test directory	Major	test	Colin P. McCabe	Colin P. McCabe
MAPREDUCE-6494	Permission issue when running archive-logs tool as different users	Major	.	Robert Kanter	Robert Kanter
MAPREDUCE-6497	Fix wrong value of JOB_FINISHED event in JobHistoryEventHandler	Major	.	Shinichi Yamashita	Shinichi Yamashita
HADOOP-10296	Incorrect null check in SwiftRestClient#buildException()	Minor	.	Ted Yu	Kanaka Kumar Avvaru
HADOOP-8437	getLocalPathForWrite should throw IOException for invalid paths	Major	fs	Brahma Reddy Battula	Brahma Reddy Battula
MAPREDUCE-6485	MR job hanged forever because all resources are taken up by reducers and the last map attempt never get resource to run	Critical	applicationmaster	Bob.zhao	Xianyin Xin
HDFS-9191	Typo in Hdfs.java. NoSuchElementException is misspelled	Trivial	documentation	Catherine Palmer	Catherine Palmer
HDFS-9100	HDFS Balancer does not respect dfs.client.use.datanode.hostname	Major	balancer & mover	Yongjun Zhang	Casey Brotherton
YARN-3619	ContainerMetrics unregisters during getMetrics and leads to ConcurrentModificationException	Major	nodemanager	Jason Lowe	zhihai xu
HDFS-9193	Fix incorrect references the usages of the DN in dfshealth.js	Minor	.	Chang Li	Chang Li
HADOOP-11098	[JDK8] Max Non Heap Memory default changed between JDK7 and 8	Major	.	Travis Thompson	Tsuyoshi Ozawa
HADOOP-12441	Fix kill command behavior under some Linux distributions.	Critical	.	Wangda Tan	Wangda Tan
HADOOP-12452	Fix tracing documention reflecting the update to htrace-4	Major	documentation	Masatake Iwasaki	Masatake Iwasaki
YARN-4176	Resync NM nodelabels with RM periodically for distributed nodelabels	Major	.	Bibin A Chundatt	Bibin A Chundatt
HDFS-7899	Improve EOF error message	Minor	hdfs-client	Harsh J	Jagadesh Kiran N
MAPREDUCE-6503	archive-logs tool should use HADOOP_PREFIX instead of HADOOP_HOME	Major	.	Robert Kanter	Robert Kanter
YARN-4209	RMStateStore FENCED state doesn't work due to updateFencedState called by stateMachine.doTransition	Critical	resourcemanager	zhihai xu	zhihai xu
HDFS-9196	Fix TestWebHdfsContentLength	Major	.	Tsuyoshi Ozawa	Masatake Iwasaki
HDFS-9178	Slow datanode I/O can cause a wrong node to be marked bad	Critical	.	Kihwal Lee	Kihwal Lee
HADOOP-12465	Incorrect javadoc in WritableUtils.java	Minor	documentation	Martin Petricek	Jagadesh Kiran N
HDFS-9176	TestDirectoryScanner#testThrottling often fails.	Minor	test	Yi Liu	Daniel Templeton
HDFS-9211	Fix incorrect version in hadoop-hdfs-native-client/pom.xml from HDFS-9170 branch-2 backport	Major	build	Eric Payne	Eric Payne
HDFS-9137	DeadLock between DataNode#refreshVolumes and BPOfferService#registrationSucceeded	Major	datanode	Uma Maheswara Rao G	Uma Maheswara Rao G
HDFS-8164	cTime is 0 in VERSION file for newly formatted NameNode.	Minor	namenode	Chris Nauroth	Xiao Chen
YARN-4235	FairScheduler PrimaryGroup does not handle empty groups returned for a user	Major	fairscheduler	Anubhav Dhoot	Anubhav Dhoot
MAPREDUCE-6302	Preempt reducers after a configurable timeout irrespective of headroom	Critical	.	mai shurong	Karthik Kambatla
HDFS-9142	Separating Configuration object for namenode(s) in MiniDFSCluster	Major	.	Siqi Li	Siqi Li
HDFS-8941	DistributedFileSystem listCorruptFileBlocks API should resolve relative path	Major	hdfs-client	Rakesh R	Rakesh R
HDFS-9222	Add hadoop-hdfs-client as a dependency of hadoop-hdfs-native-client	Major	.	Haohui Mai	Mingliang Liu
YARN-4201	AMBlacklist does not work for minicluster	Major	resourcemanager	Jun Gong	Jun Gong
HDFS-9215	Suppress the RAT warnings in hdfs-native-client module	Minor	.	Haohui Mai	Haohui Mai
HDFS-9224	TestFileTruncate fails intermittently with BindException	Major	test	Brahma Reddy Battula	Brahma Reddy Battula
YARN-4017	container-executor overuses PATH_MAX	Major	nodemanager	Allen Wittenauer	Sidharta Seethana
HDFS-8676	Delayed rolling upgrade finalization can cause heartbeat expiration and write failures	Critical	.	Kihwal Lee	Walter Su
HADOOP-12474	MiniKMS should use random ports for Jetty server by default	Major	.	Mingliang Liu	Mingliang Liu
HADOOP-12449	TestDNS and TestNetUtils failing if no network	Minor	test	Steve Loughran	Steve Loughran
HADOOP-11515	Upgrade jsch lib to jsch-0.1.51 to avoid problems running on java7	Major	build	Johannes Zillmann	Tsuyoshi Ozawa
HDFS-9235	hdfs-native-client build getting errors when built with cmake 2.6	Minor	hdfs-client	Eric Payne	Eric Payne
HDFS-8779	WebUI fails to display block IDs that are larger than 2^53 - 1	Minor	webhdfs	Walter Su	Haohui Mai
HDFS-9187	Fix null pointer error in Globber when FS was not constructed via FileSystem#createFileSystem	Major	tracing	stack	Colin P. McCabe
HDFS-1172	Blocks in newly completed files are considered under-replicated too quickly	Major	namenode	Todd Lipcon	Masatake Iwasaki
YARN-4250	NPE in AppSchedulingInfo#isRequestLabelChanged	Major	resourcemanager, scheduler	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-12478	Shell.getWinUtilsPath() has been renamed Shell.getWinutilsPath()	Critical	util	Steve Loughran	Steve Loughran
HDFS-9220	Reading small file (< 512 bytes) that is open for append fails due to incorrect checksum	Blocker	.	Bogdan Raducanu	Jing Zhao
HADOOP-12479	ProtocMojo does not log the reason for a protoc compilation failure.	Minor	build	Chris Nauroth	Chris Nauroth
HADOOP-11628	SPNEGO auth does not work with CNAMEs in JDK8	Blocker	security	Daryn Sharp	Daryn Sharp
YARN-2597	MiniYARNCluster should propagate reason for AHS not starting	Major	test	Steve Loughran	Steve Loughran
YARN-4155	TestLogAggregationService.testLogAggregationServiceWithInterval failing	Critical	test	Steve Loughran	Bibin A Chundatt
HADOOP-10941	Proxy user verification NPEs if remote host is unresolvable	Critical	ipc, security	Daryn Sharp	Benoy Antony
HADOOP-12483	Maintain wrapped SASL ordering for postponed IPC responses	Critical	ipc	Daryn Sharp	Daryn Sharp
HDFS-9237	NPE at TestDataNodeVolumeFailureToleration#tearDown	Major	test	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-12464	Interrupted client may try to fail-over and retry	Major	ipc	Kihwal Lee	Kihwal Lee
YARN-4270	Limit application resource reservation on nodes for non-node/rack specific requests	Major	fairscheduler	Arun Suresh	Arun Suresh
HDFS-9208	Disabling atime may fail clients like distCp	Major	.	Kihwal Lee	Kihwal Lee
HDFS-9270	TestShortCircuitLocalRead should not leave socket after unit test	Minor	test	Masatake Iwasaki	Masatake Iwasaki
HADOOP-12418	TestRPC.testRPCInterruptedSimple fails intermittently	Major	test	Steve Loughran	Kihwal Lee
MAPREDUCE-6495	Docs for archive-logs tool	Major	documentation	Robert Kanter	Robert Kanter
HDFS-3059	ssl-server.xml causes NullPointer	Minor	datanode, security	Evert Lammerts	Xiao Chen
HDFS-9274	Default value of dfs.datanode.directoryscan.throttle.limit.ms.per.sec should be consistent	Trivial	datanode	Yi Liu	Yi Liu
MAPREDUCE-6518	Set SO_KEEPALIVE on shuffle connections	Major	mrv2, nodemanager	Nathan Roberts	Chang Li
HDFS-9225	Fix intermittent test failure of TestBlockManager.testBlocksAreNotUnderreplicatedInSingleRack	Minor	test	Masatake Iwasaki	Masatake Iwasaki
HDFS-9273	ACLs on root directory may be lost after NN restart	Critical	namenode	Xiao Chen	Xiao Chen
YARN-4000	RM crashes with NPE if leaf queue becomes parent queue during restart	Major	capacityscheduler, resourcemanager	Jason Lowe	Varun Saxena
HADOOP-9692	Improving log message when SequenceFile reader throws EOFException on zero-length file	Major	.	Chu Tong	Zhe Zhang
YARN-4256	YARN fair scheduler vcores with decimal values	Minor	fairscheduler	Prabhu Joseph	Jun Gong
HADOOP-12484	Single File Rename Throws Incorrectly In Potential Race Condition Scenarios	Major	tools	Gaurav Kanade	Gaurav Kanade
HDFS-9286	HttpFs does not parse ACL syntax correctly for operation REMOVEACLENTRIES	Major	fs	Wei-Chiu Chuang	Wei-Chiu Chuang
YARN-4009	CORS support for ResourceManager REST API	Major	.	Prakash Ramachandran	Varun Vasudev
YARN-4041	Slow delegation token renewal can severely prolong RM recovery	Major	resourcemanager	Jason Lowe	Sunil G
HDFS-9290	DFSClient#callAppend() is not backward compatible for slightly older NameNodes	Blocker	.	Tony Wu	Tony Wu
HDFS-9301	HDFS clients can't construct HdfsConfiguration instances	Major	.	Steve Loughran	Mingliang Liu
YARN-4294	[JDK8] Fix javadoc errors caused by wrong reference and illegal tag	Blocker	build, documentation	Akira Ajisaka	Akira Ajisaka
YARN-4289	TestDistributedShell failing with bind exception	Major	test	Brahma Reddy Battula	Brahma Reddy Battula
YARN-4296	DistributedShell Log.info is not friendly	Major	applications/distributed-shell	Xiaowei Wang	Xiaowei Wang
YARN-4246	NPE while listing app attempt	Major	.	Varun Saxena	nijel
YARN-4223	Findbugs warnings in hadoop-yarn-server-nodemanager project	Minor	nodemanager	Varun Saxena	Varun Saxena
HADOOP-12513	Dockerfile lacks initial ‘apt-get update’	Trivial	build	Akihiro Suda	Akihiro Suda
YARN-4284	condition for AM blacklisting is too narrow	Major	resourcemanager	Sangjin Lee	Sangjin Lee
HDFS-9268	fuse_dfs chown crashes when uid is passed as -1	Minor	.	Wei-Chiu Chuang	Colin P. McCabe
HDFS-9284	fsck command should not print exception trace when file not found	Major	.	Jagadesh Kiran N	Jagadesh Kiran N
HDFS-9305	Delayed heartbeat processing causes storm of subsequent heartbeats	Major	datanode	Chris Nauroth	Arpit Agarwal
YARN-4169	Fix racing condition of TestNodeStatusUpdaterForLabels	Critical	test	Steve Loughran	Naganarasimha G R
YARN-4300	[JDK8] Fix javadoc errors caused by wrong tags	Blocker	build, documentation	Akira Ajisaka	Akira Ajisaka
YARN-4302	SLS not able start due to NPE in SchedulerApplicationAttempt#getResourceUsageReport	Major	.	Bibin A Chundatt	Bibin A Chundatt
HADOOP-12178	NPE during handling of SASL setup if problem with SASL resolver class	Minor	ipc	Steve Loughran	Steve Loughran
HADOOP-11685	StorageException complaining " no lease ID" during HBase distributed log splitting	Major	tools	Duo Xu	Duo Xu
HDFS-9231	fsck doesn't list correct file path when Bad Replicas/Blocks are in a snapshot	Major	snapshots	Xiao Chen	Xiao Chen
HDFS-9302	WebHDFS truncate throws NullPointerException if newLength is not provided	Minor	webhdfs	Karthik Palaniappan	Jagadesh Kiran N
YARN-4251	TestAMRMClientOnRMRestart#testAMRMClientOnAMRMTokenRollOverOnRMRestart is failing	Major	test	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-12519	hadoop-azure tests should avoid creating a metrics configuration file in the module root directory.	Minor	fs/azure, test	Chris Nauroth	Chris Nauroth
HDFS-9279	Decomissioned capacity should not be considered for configured/used capacity	Major	.	Kuhu Shukla	Kuhu Shukla
HDFS-9044	Give Priority to FavouredNodes , before selecting nodes from FavouredNode's Node Group	Major	.	J.Andreina	J.Andreina
YARN-4130	Duplicate declaration of ApplicationId in RMAppManager#submitApplication method	Trivial	resourcemanager	Kai Sasaki	Kai Sasaki
YARN-4288	NodeManager restart should keep retrying to register to RM while connection exception happens during RM failed over.	Critical	nodemanager	Junping Du	Junping Du
MAPREDUCE-6515	Update Application priority in AM side from AM-RM heartbeat	Major	applicationmaster	Sunil G	Sunil G
HDFS-9332	Fix Precondition failures from NameNodeEditLogRoller while saving namespace	Major	.	Andrew Wang	Andrew Wang
YARN-4313	Race condition in MiniMRYarnCluster when getting history server address	Major	.	Jian He	Jian He
YARN-4312	TestSubmitApplicationWithRMHA fails on branch-2.7 and branch-2.6 as some of the test cases time out	Major	.	Varun Saxena	Varun Saxena
YARN-4320	TestJobHistoryEventHandler fails as AHS in MiniYarnCluster no longer binds to default port 8188	Major	.	Varun Saxena	Varun Saxena
MAPREDUCE-6528	Memory leak for HistoryFileManager.getJobSummary()	Critical	jobhistoryserver	Junping Du	Junping Du
MAPREDUCE-6451	DistCp has incorrect chunkFilePath for multiple jobs when strategy is dynamic	Major	distcp	Kuhu Shukla	Kuhu Shukla
HADOOP-12533	Introduce FileNotFoundException in WASB for read and seek API	Major	tools	Dushyanth	Dushyanth
HADOOP-12508	delete fails with exception when lease is held on blob	Blocker	fs/azure	Gaurav Kanade	Gaurav Kanade
HDFS-9329	TestBootstrapStandby#testRateThrottling is flaky because fsimage size is smaller than IO buffer size	Minor	test	Zhe Zhang	Zhe Zhang
HDFS-9313	Possible NullPointerException in BlockManager if no excess replica can be chosen	Major	.	Ming Ma	Ming Ma
HADOOP-12542	TestDNS fails on Windows after HADOOP-12437.	Major	net	Chris Nauroth	Chris Nauroth
YARN-4326	Fix TestDistributedShell timeout as AHS in MiniYarnCluster no longer binds to default port 8188	Major	.	MENG DING	MENG DING
HDFS-9289	Make DataStreamer#block thread safe and verify genStamp in commitBlock	Critical	.	Chang Li	Chang Li
YARN-4127	RM fail with noAuth error if switched from failover mode to non-failover mode	Major	resourcemanager	Jian He	Varun Saxena
HDFS-9351	checkNNStartup() need to be called when fsck calls FSNamesystem.getSnapshottableDirs()	Major	namenode	Yongjun Zhang	Xiao Chen
HADOOP-12296	when setnetgrent returns 0 in linux, exception should be thrown	Major	.	Chang Li	Chang Li
HDFS-9357	NN UI renders icons of decommissioned DN incorrectly	Critical	.	Archana T	Surendra Singh Lilhore
HADOOP-12540	TestAzureFileSystemInstrumentation#testClientErrorMetrics fails intermittently due to assumption that a lease error will be thrown.	Major	fs/azure, test	Chris Nauroth	Gaurav Kanade
HDFS-9360	Storage type usage isn't updated properly after file deletion	Major	.	Ming Ma	Ming Ma
HDFS-9378	hadoop-hdfs-client tests do not write logs.	Minor	test	Chris Nauroth	Chris Nauroth
HDFS-4937	ReplicationMonitor can infinite-loop in BlockPlacementPolicyDefault#chooseRandom()	Major	namenode	Kihwal Lee	Kihwal Lee
HDFS-9372	Remove dead code in DataStorage.recoverTransitionRead	Major	datanode	Duo Zhang	Duo Zhang
HDFS-9384	TestWebHdfsContentLength intermittently hangs and fails due to TCP conversation mismatch between client and server.	Minor	test	Chris Nauroth	Chris Nauroth
HDFS-6481	DatanodeManager#getDatanodeStorageInfos() should check the length of storageIDs	Minor	namenode	Ted Yu	Tsz Wo Nicholas Sze
HDFS-9318	considerLoad factor can be improved	Major	.	Kuhu Shukla	Kuhu Shukla
HDFS-9236	Missing sanity check for block size during block recovery	Major	datanode	Tony Wu	Tony Wu
HDFS-9394	branch-2 hadoop-hdfs-client fails during FileSystem ServiceLoader initialization, because HftpFileSystem is missing.	Critical	hdfs-client	Chris Nauroth	Mingliang Liu
HADOOP-12526	[Branch-2] there are duplicate dependency definitions in pom's	Major	build	Sangjin Lee	Sangjin Lee
MAPREDUCE-5763	Warn message about httpshuffle in NM logs	Major	.	Sandy Ryza	Akira Ajisaka
HDFS-9383	TestByteArrayManager#testByteArrayManager fails	Major	.	Kihwal Lee	Tsz Wo Nicholas Sze
HDFS-9249	NPE is thrown if an IOException is thrown in NameNode constructor	Minor	namenode	Wei-Chiu Chuang	Wei-Chiu Chuang
HDFS-2261	AOP unit tests are not getting compiled or run	Minor	test	Giridharan Kesavan	Haohui Mai
HDFS-9401	Fix findbugs warnings in BlockRecoveryWorker	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-12482	Race condition in JMX cache update	Major	.	Tony Wu	Tony Wu
HDFS-9364	Unnecessary DNS resolution attempts when creating NameNodeProxies	Major	ha, performance	Xiao Chen	Xiao Chen
HADOOP-12560	Fix sprintf warnings in {{DomainSocket.c}} introduced by HADOOP-12344	Major	native	Colin P. McCabe	Mingliang Liu
HDFS-9245	Fix findbugs warnings in hdfs-nfs/WriteCtx	Major	nfs	Mingliang Liu	Mingliang Liu
YARN-4241	Fix typo of property name in yarn-default.xml	Major	documentation	Anthony Rojas	Anthony Rojas
MAPREDUCE-6533	testDetermineCacheVisibilities of TestClientDistributedCacheManager is broken	Major	.	Chang Li	Chang Li
HDFS-9396	Total files and directories on jmx and web UI on standby is uninitialized	Blocker	.	Kihwal Lee	Kihwal Lee
MAPREDUCE-6540	TestMRTimelineEventHandling fails	Major	test	Sangjin Lee	Sangjin Lee
YARN-4347	Resource manager fails with Null pointer exception	Major	yarn	Yesha Vora	Jian He
HADOOP-12545	Hadoop javadoc has broken links for AccessControlList, ImpersonationProvider, DefaultImpersonationProvider, and DistCp	Major	documentation	Mohammad Arshad	Mohammad Arshad
YARN-4354	Public resource localization fails with NPE	Blocker	nodemanager	Jason Lowe	Jason Lowe
HDFS-9413	getContentSummary() on standby should throw StandbyException	Critical	.	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-9358	TestNodeCount#testNodeCount timed out	Major	test	Wei-Chiu Chuang	Masatake Iwasaki
HDFS-9397	Fix typo for readChecksum() LOG.warn in BlockSender.java	Trivial	.	Enrique Flores	Enrique Flores
HDFS-9400	TestRollingUpgradeRollback fails on branch-2.	Blocker	.	Chris Nauroth	Brahma Reddy Battula
YARN-4367	SLS webapp doesn't load	Major	scheduler-load-simulator	Karthik Kambatla	Karthik Kambatla
HDFS-9431	DistributedFileSystem#concat fails if the target path is relative.	Major	hdfs-client	Kazuho Fujii	Kazuho Fujii
YARN-2859	ApplicationHistoryServer binds to default port 8188 in MiniYARNCluster	Critical	timelineserver	Hitesh Shah	Vinod Kumar Vavilapalli
YARN-4374	RM capacity scheduler UI rounds user limit factor	Major	capacityscheduler	Chang Li	Chang Li
YARN-3769	Consider user limit when calculating total pending resource for preemption policy in Capacity Scheduler	Major	capacityscheduler	Eric Payne	Eric Payne
HDFS-9443	Disabling HDFS client socket cache causes logging message printed to console for CLI commands.	Trivial	hdfs-client	Chris Nauroth	Chris Nauroth
HADOOP-11218	Add TLSv1.1,TLSv1.2 to KMS, HttpFS, SSLFactory	Critical	kms	Robert Kanter	Vijay Singh
HADOOP-12467	Respect user-defined JAVA_LIBRARY_PATH in Windows Hadoop scripts	Minor	scripts	Radhey Shah	Radhey Shah
HADOOP-12181	Fix intermittent test failure of TestZKSignerSecretProvider	Minor	.	Masatake Iwasaki	Masatake Iwasaki
HDFS-6885	Fix wrong use of BytesWritable in FSEditLogOp#RenameOp	Minor	namenode	Yi Liu	Yi Liu
HADOOP-12098	Remove redundant test dependencies in Hadoop Archives	Minor	.	Varun Saxena	Varun Saxena
HDFS-7897	Shutdown metrics when stopping JournalNode	Major	.	zhouyingchao	zhouyingchao
HADOOP-11149	Increase the timeout of TestZKFailoverController	Major	test	Rajat Jain	Steve Loughran
HADOOP-11677	Add cookie flags for logs and static contexts	Major	.	nijel	nijel
HDFS-9356	Decommissioning node does not have Last Contact value in the UI	Major	.	Archana T	Surendra Singh Lilhore
HADOOP-12313	NPE in JvmPauseMonitor when calling stop() before start()	Critical	.	Rohith Sharma K S	Gabor Liptak
HDFS-9428	Fix intermittent failure of TestDNFencing.testQueueingWithAppend	Minor	test	Masatake Iwasaki	Masatake Iwasaki
HDFS-9435	TestBlockRecovery#testRBWReplicas is failing intermittently	Major	.	Rakesh R	Rakesh R
HADOOP-12577	Bump up commons-collections version to 3.2.2 to address a security flaw	Blocker	build, security	Wei-Chiu Chuang	Wei-Chiu Chuang
YARN-4344	NMs reconnecting with changed capabilities can lead to wrong cluster resource calculations	Critical	resourcemanager	Varun Vasudev	Varun Vasudev
HADOOP-9822	create constant MAX_CAPACITY in RetryCache rather than hard-coding 16 in RetryCache constructor	Minor	.	Tsuyoshi Ozawa	Tsuyoshi Ozawa
YARN-4298	Fix findbugs warnings in hadoop-yarn-common	Minor	.	Varun Saxena	Sunil G
YARN-4387	Fix typo in FairScheduler log message	Minor	fairscheduler	Xin Wang	Xin Wang
HDFS-6101	TestReplaceDatanodeOnFailure fails occasionally	Major	test	Arpit Agarwal	Wei-Chiu Chuang
HDFS-8855	Webhdfs client leaks active NameNode connections	Major	webhdfs	Bob Hansen	Xiaobing Zhou
HDFS-8335	FSNamesystem should construct FSPermissionChecker only if permission is enabled	Major	.	David Bryson	Gabor Liptak
MAPREDUCE-5883	“Total megabyte-seconds” in job counters is slightly misleading	Minor	.	Nathan Roberts	Nathan Roberts
YARN-4365	FileSystemNodeLabelStore should check for root dir existence on startup	Major	resourcemanager	Jason Lowe	Kuhu Shukla
HDFS-8807	dfs.datanode.data.dir does not handle spaces between storageType and URI correctly	Major	datanode	Anu Engineer	Anu Engineer
HADOOP-12415	hdfs and nfs builds broken on -missing compile-time dependency on netty	Major	nfs	Konstantin Boudnik	Tom Zeng
MAPREDUCE-6553	Replace ‘\u2b05’ with ‘<-’ in rendering job configuration	Minor	jobhistoryserver	Akira Ajisaka	Gabor Liptak
HADOOP-12598	add XML namespace declarations for some hadoop/tools modules	Minor	build, tools	Xin Wang	Xin Wang
YARN-4380	TestResourceLocalizationService.testDownloadingResourcesOnContainerKill fails intermittently	Major	test	Tsuyoshi Ozawa	Varun Saxena
MAPREDUCE-6557	Some tests in mapreduce-client-app are writing outside of target	Blocker	build	Allen Wittenauer	Akira Ajisaka
HDFS-9459	hadoop-hdfs-native-client fails test build on Windows after transition to ctest.	Blocker	build, test	Chris Nauroth	Chris Nauroth
HDFS-9407	TestFileTruncate fails with BindException	Major	test	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-9467	Fix data race accessing writeLockHeldTimeStamp in FSNamesystem	Major	namenode	Mingliang Liu	Mingliang Liu
MAPREDUCE-6549	multibyte delimiters with LineRecordReader cause duplicate records	Major	mrv1, mrv2	Dustin Cote	Wilfred Spiegelenburg
MAPREDUCE-6550	archive-logs tool changes log ownership to the Yarn user when using DefaultContainerExecutor	Major	.	Robert Kanter	Robert Kanter
HADOOP-12468	Partial group resolution failure should not result in user lockout	Minor	security	Wei-Chiu Chuang	Wei-Chiu Chuang
HDFS-9426	Rollingupgrade finalization is not backward compatible	Blocker	.	Kihwal Lee	Kihwal Lee
HADOOP-10406	TestIPC.testIpcWithReaderQueuing may fail	Major	ipc	Tsz Wo Nicholas Sze	Xiao Chen
HDFS-9470	Encryption zone on root not loaded from fsimage after NN restart	Critical	.	Xiao Chen	Xiao Chen
HDFS-9336	deleteSnapshot throws NPE when snapshotname is null	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-12609	Fix intermittent failure of TestDecayRpcScheduler	Minor	ipc, test	Masatake Iwasaki	Masatake Iwasaki
HDFS-6533	TestBPOfferService#testBasicFunctionalitytest fails intermittently	Major	datanode, hdfs-client	Yongjun Zhang	Wei-Chiu Chuang
YARN-4398	Yarn recover functionality causes the cluster running slowly and the cluster usage rate is far below 100	Major	resourcemanager	NING DING	NING DING
HDFS-9294	DFSClient deadlock when close file and failed to renew lease	Blocker	hdfs-client	DENG FEI	Brahma Reddy Battula
HADOOP-12565	Replace DSA with RSA for SSH key type in SingleCluster.md	Minor	documentation	Alexander Veit	Mingliang Liu
YARN-4408	NodeManager still reports negative running containers	Major	nodemanager	Robert Kanter	Robert Kanter
HDFS-9430	Remove waitForLoadingFSImage since checkNNStartup has ensured image loaded and namenode started.	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
YARN-4392	ApplicationCreatedEvent event time resets after RM restart/failover	Critical	.	Xuan Gong	Naganarasimha G R
YARN-4422	Generic AHS sometimes doesn't show started, node, or logs on App page	Major	.	Eric Payne	Eric Payne
YARN-4424	Fix deadlock in RMAppImpl	Blocker	.	Yesha Vora	Jian He
HADOOP-12617	SPNEGO authentication request to non-default realm gets default realm name inserted in target server principal	Major	security	Matt Foley	Matt Foley
YARN-4431	Not necessary to do unRegisterNM() if NM get stop due to failed to connect to RM	Major	nodemanager	Junping Du	Junping Du
YARN-4421	Remove dead code in RmAppImpl.RMAppRecoveredTransition	Trivial	resourcemanager	Daniel Templeton	Daniel Templeton
HADOOP-12618	NPE in TestSequenceFile	Major	test	Brahma Reddy Battula	Brahma Reddy Battula
YARN-4434	NodeManager Disk Checker parameter documentation is not correct	Minor	documentation, nodemanager	Takashi Ohnishi	Weiwei Yang
HADOOP-12602	TestMetricsSystemImpl#testQSize occasionally fail	Major	test	Wei-Chiu Chuang	Masatake Iwasaki
HDFS-9519	Some coding improvement in SecondaryNameNode#main	Major	namenode	Yongjun Zhang	Xiao Chen
HDFS-9514	TestDistributedFileSystem.testDFSClientPeerWriteTimeout failing; exception being swallowed	Major	hdfs-client, test	Steve Loughran	Wei-Chiu Chuang
HDFS-9535	Newly completed blocks in IBR should not be considered under-replicated too quickly	Major	namenode	Jing Zhao	Mingliang Liu
YARN-4418	AM Resource Limit per partition can be updated to ResourceUsage as well	Major	resourcemanager	Sunil G	Sunil G
YARN-4403	(AM/NM/Container)LivelinessMonitor should use monotonic time when calculating period	Critical	.	Junping Du	Junping Du
YARN-4402	TestNodeManagerShutdown And TestNodeManagerResync fails with bind exception	Major	test	Brahma Reddy Battula	Brahma Reddy Battula
YARN-4439	Clarify NMContainerStatus#toString method.	Major	.	Jian He	Jian He
YARN-4440	FSAppAttempt#getAllowedLocalityLevelByTime should init the lastScheduler time	Major	fairscheduler	Yiqun Lin	Yiqun Lin
HDFS-9516	truncate file fails with data dirs on multiple disks	Major	datanode	Bogdan Raducanu	Plamen Jeliazkov
HDFS-8894	Set SO_KEEPALIVE on DN server sockets	Major	datanode	Nathan Roberts	Kanaka Kumar Avvaru
YARN-4461	Redundant nodeLocalityDelay log in LeafQueue	Trivial	capacityscheduler	Jason Lowe	Eric Payne
YARN-4452	NPE when submit Unmanaged application	Critical	.	Naganarasimha G R	Naganarasimha G R
HDFS-9565	TestDistributedFileSystem.testLocatedFileStatusStorageIdsTypes is flaky due to race condition	Minor	fs, test	Wei-Chiu Chuang	Wei-Chiu Chuang
YARN-4225	Add preemption status to yarn queue -status for capacity scheduler	Minor	capacity scheduler, yarn	Eric Payne	Eric Payne
HDFS-9515	NPE when MiniDFSCluster#shutdown is invoked on uninitialized reference	Minor	.	Wei-Chiu Chuang	Wei-Chiu Chuang
HDFS-9572	Prevent DataNode log spam if a client connects on the data transfer port but sends no data.	Major	datanode	Chris Nauroth	Chris Nauroth
HDFS-9533	seen_txid in the shared edits directory is modified during bootstrapping	Major	ha, namenode	Kihwal Lee	Kihwal Lee
HDFS-9571	Fix ASF Licence warnings in Jenkins reports	Major	test	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-9393	After choosing favored nodes, choosing nodes for remaining replicas should go through BlockPlacementPolicy	Major	.	J.Andreina	J.Andreina
HDFS-9347	Invariant assumption in TestQuorumJournalManager.shutdown() is wrong	Major	test	Wei-Chiu Chuang	Wei-Chiu Chuang
HADOOP-12656	MiniKdc throws “address in use” BindException	Major	.	Wei-Chiu Chuang	Wei-Chiu Chuang
HADOOP-12636	Prevent ServiceLoader failure init for unused FileSystems	Major	fs	Inigo Goiri	Inigo Goiri
MAPREDUCE-6583	Clarify confusing sentence in MapReduce tutorial document	Minor	documentation	chris snow	Kai Sasaki
HDFS-9505	HDFS Architecture documentation needs to be refreshed.	Major	documentation	Chris Nauroth	Masatake Iwasaki
YARN-4454	NM to nodelabel mapping going wrong after RM restart	Critical	.	Bibin A Chundatt	Bibin A Chundatt
HDFS-9580	TestComputeInvalidateWork#testDatanodeReRegistration failed due to unexpected number of invalidate blocks.	Major	datanode, namenode, test	Wei-Chiu Chuang	Wei-Chiu Chuang
YARN-4477	FairScheduler: Handle condition which can result in an infinite loop in attemptScheduling.	Major	fairscheduler	Tao Jie	Tao Jie
HDFS-9589	Block files which have been hardlinked should be duplicated before the DataNode appends to the them	Major	datanode	Colin P. McCabe	Colin P. McCabe
HDFS-9458	TestBackupNode always binds to port 50070, which can cause bind failures.	Major	test	Chris Nauroth	Xiao Chen
YARN-4109	Exception on RM scheduler page loading with labels	Minor	.	Bibin A Chundatt	Mohammad Shahid Khan
MAPREDUCE-6419	JobHistoryServer doesn‘t sort properly based on Job ID when Job id’s exceed 9999	Major	webapps	Devaraj K	Mohammad Shahid Khan
HDFS-9597	BaseReplicationPolicyTest should update data node stats after adding a data node	Blocker	datanode	Wei-Chiu Chuang	Wei-Chiu Chuang
HADOOP-12681	start-build-env.sh fails in branch-2	Blocker	build	Akira Ajisaka	Kengo Seki
HDFS-7163	WebHdfsFileSystem should retry reads according to the configured retry policy.	Major	webhdfs	Eric Payne	Eric Payne
HADOOP-12559	KMS connection failures should trigger TGT renewal	Major	security	Zhe Zhang	Zhe Zhang
MAPREDUCE-6574	MR AM should print host of failed tasks.	Major	.	Wangda Tan	Mohammad Shahid Khan
MAPREDUCE-6589	TestTaskLog outputs a log under directory other than target/test-dir	Major	test	Akira Ajisaka	Akira Ajisaka
YARN-4315	NaN in Queue percentage for cluster apps page	Minor	.	Bibin A Chundatt	Bibin A Chundatt
YARN-1382	Remove unusableRMNodesConcurrentSet (never used) in NodeListManager to get rid of memory leak	Major	resourcemanager	Alejandro Abdelnur	Rohith Sharma K S
HADOOP-12682	Fix TestKMS#testKMSRestart* failure	Major	.	Wei-Chiu Chuang	Wei-Chiu Chuang
HADOOP-12608	Fix exception message in WASB when connecting with anonymous credential	Major	tools	Dushyanth	Dushyanth
YARN-4524	Cleanup AppSchedulingInfo	Major	scheduler	Karthik Kambatla	Karthik Kambatla
YARN-4510	Fix SLS startup failure caused by NPE	Critical	.	Bibin A Chundatt	Bibin A Chundatt
MAPREDUCE-6593	TestJobHistoryEventHandler.testTimelineEventHandling fails on trunk because of NPE	Major	.	Tsuyoshi Ozawa	Naganarasimha G R
HDFS-9445	Datanode may deadlock while handling a bad volume	Blocker	.	Kihwal Lee	Walter Su
HADOOP-12658	Clear javadoc and check style issues around DomainSocket	Trivial	.	Kai Zheng	Kai Zheng
HADOOP-12604	Exception may be swallowed in KMSClientProvider	Major	kms	Yongjun Zhang	Yongjun Zhang
HDFS-9605	Add links to failed volumes to explorer.html in HDFS Web UI	Minor	.	Archana T	Archana T
MAPREDUCE-6577	MR AM unable to load native library without MR_AM_ADMIN_USER_ENV set	Critical	mr-am	Sangjin Lee	Sangjin Lee
HADOOP-12689	S3 filesystem operations stopped working correctly	Major	tools	Matthew Paduano	Matthew Paduano
YARN-4546	ResourceManager crash due to scheduling opportunity overflow	Critical	resourcemanager	Jason Lowe	Jason Lowe
HADOOP-12634	Change Lazy Rename Pending Operation Completion of WASB to address case of potential data loss due to partial copy	Critical	.	Gaurav Kanade	Gaurav Kanade
HDFS-9600	do not check replication if the block is under construction	Critical	.	Phil Yang	Phil Yang
HDFS-9619	SimulatedFSDataset sometimes can not find blockpool for the correct namenode	Major	datanode, test	Wei-Chiu Chuang	Wei-Chiu Chuang
HADOOP-12675	Fix description about retention period in usage of expunge command	Minor	documentation	Masatake Iwasaki	Masatake Iwasaki
HADOOP-12613	TestFind.processArguments occasionally fails	Major	test	Wei-Chiu Chuang	Wei-Chiu Chuang
MAPREDUCE-6508	TestNetworkedJob fails consistently due to delegation token changes on RM.	Major	test	Rohith Sharma K S	Akira Ajisaka
HDFS-9574	Reduce client failures during datanode restart	Major	.	Kihwal Lee	Kihwal Lee
HDFS-9493	Test o.a.h.hdfs.server.namenode.TestMetaSave fails in trunk	Major	test	Mingliang Liu	Tony Wu
HADOOP-12678	Handle empty rename pending metadata file during atomic rename in redo path	Critical	fs/azure	madhumita chakraborty	madhumita chakraborty
HADOOP-12590	TestCompressorDecompressor failing without stack traces	Critical	test	Steve Loughran	John Zhuge
HADOOP-12587	Hadoop AuthToken refuses to work without a maxinactive attribute in issued token	Blocker	security	Steve Loughran	Benoy Antony
HADOOP-12551	Introduce FileNotFoundException for WASB FileSystem API	Major	tools	Dushyanth	Dushyanth
MAPREDUCE-6068	Illegal progress value warnings in map tasks	Major	mrv2, task	Todd Lipcon	Binglin Chang
HDFS-9639	Inconsistent Logging in BootstrapStandby	Minor	ha	BELUGA BEHR	Xiaobing Zhou
HDFS-9584	NPE in distcp when ssl configuration file does not exist in class path.	Major	distcp	Surendra Singh Lilhore	Surendra Singh Lilhore
HADOOP-12584	Disable browsing the static directory in HttpServer2	Major	security	Robert Kanter	Robert Kanter
YARN-4567	javadoc failing on java 8	Blocker	build	Steve Loughran	Steve Loughran
YARN-4414	Nodemanager connection errors are retried at multiple levels	Major	nodemanager	Jason Lowe	Chang Li
HADOOP-12603	TestSymlinkLocalFSFileContext#testSetTimesSymlinkToDir occasionally fail	Major	test	Wei-Chiu Chuang	Wei-Chiu Chuang
YARN-4534	Remove the redundant symbol in yarn rmadmin help msg	Trivial	.	Yiqun Lin	Yiqun Lin
HADOOP-12700	Remove unused import in TestCompressorDecompressor.java	Minor	.	John Zhuge	John Zhuge
MAPREDUCE-6601	Fix typo in Job#setUseNewAPI	Trivial	.	Kai Sasaki	Kai Sasaki
YARN-3446	FairScheduler headroom calculation should exclude nodes in the blacklist	Major	fairscheduler	zhihai xu	zhihai xu
HDFS-9648	TestStartup.testImageChecksum is broken by HDFS-9569's message change	Trivial	namenode	Wei-Chiu Chuang	Wei-Chiu Chuang
HADOOP-12706	TestLocalFsFCStatistics#testStatisticsThreadLocalDataCleanUp times out occasionally	Major	test	Jason Lowe	Sangjin Lee
YARN-4581	AHS writer thread leak makes RM crash while RM is recovering	Major	resourcemanager	sandflee	sandflee
MAPREDUCE-6554	MRAppMaster servicestart failing with NPE in MRAppMaster#parsePreviousJobHistory	Critical	.	Bibin A Chundatt	Bibin A Chundatt
YARN-4389	“yarn.am.blacklisting.enabled” and “yarn.am.blacklisting.disable-failure-threshold” should be app specific rather than a setting for whole YARN cluster	Critical	applications	Junping Du	Sunil G
HDFS-9612	DistCp worker threads are not terminated after jobs are done.	Major	distcp	Wei-Chiu Chuang	Wei-Chiu Chuang
HADOOP-12712	Fix some cmake plugin and native build warnings	Minor	native	Colin P. McCabe	Colin P. McCabe
YARN-4538	QueueMetrics pending cores and memory metrics wrong	Major	.	Bibin A Chundatt	Bibin A Chundatt
YARN-4596	SystemMetricPublisher should not swallow error messages from TimelineClient#putEntities	Major	timelineserver	Li Lu	Li Lu
YARN-4502	Fix two AM containers get allocated when AM restart	Critical	.	Yesha Vora	Vinod Kumar Vavilapalli
HDFS-9623	Update example configuration of block state change log in log4j.properties	Minor	logging	Masatake Iwasaki	Masatake Iwasaki
YARN-4565	When sizeBasedWeight enabled for FairOrderingPolicy in CapacityScheduler, Sometimes lead to situation where all queue resources consumed by AMs only	Major	capacity scheduler, capacityscheduler	Karam Singh	Wangda Tan
HADOOP-12356	Fix computing CPU usage statistics on Windows	Major	util	Yunqi Zhang	Inigo Goiri
HDFS-9661	Deadlock in DN.FsDatasetImpl between moveBlockAcrossStorage and createRbw	Major	datanode	ade	ade
HDFS-9655	NN should start JVM pause monitor before loading fsimage	Critical	.	John Zhuge	John Zhuge
YARN-4559	Make leader elector and zk store share the same curator client	Major	.	Jian He	Jian He
HADOOP-12605	Fix intermittent failure of TestIPC.testIpcWithReaderQueuing	Minor	test	Masatake Iwasaki	Masatake Iwasaki
HDFS-9625	set replication for empty file failed when set storage policy	Major	namenode	DENG FEI	DENG FEI
HADOOP-12423	Handle failure of registering shutdownhook by ShutdownHookManager in static block	Minor	fs	Abhishek Agarwal	Abhishek Agarwal
HDFS-9634	webhdfs client side exceptions don't provide enough details	Major	webhdfs	Eric Payne	Eric Payne
YARN-4608	Redundant code statement in WritingYarnApplications	Minor	documentation	Kai Sasaki	Kai Sasaki
HADOOP-7161	Remove unnecessary oro package from dependency management section	Minor	build	Todd Lipcon	Sean Busbey
YARN-4610	Reservations continue looking for one app causes other apps to starve	Blocker	capacityscheduler	Jason Lowe	Jason Lowe
HADOOP-12659	Incorrect usage of config parameters in token manager of KMS	Major	security	Tianyin Xu	Mingliang Liu
MAPREDUCE-6605	Fix typos mapreduce.map.skip.proc.count.autoincr and mapreduce.reduce.skip.proc.count.autoincr in mapred-default.xml	Major	documentation	Dong Zhen	Kai Sasaki
YARN-4605	Spelling mistake in the help message of “yarn applicationattempt” command	Trivial	client, yarn	Manjunath Ballur	Weiwei Yang
HDFS-9682	Fix a typo “aplication” in HttpFS document	Trivial	documentation	Weiwei Yang	Weiwei Yang
HADOOP-12730	Hadoop streaming -mapper and -reducer options are wrongly documented as required	Major	documentation	DeepakVohra	Kengo Seki
HDFS-8898	Create API and command-line argument to get quota and quota usage without detailed content summary	Major	fs	Joep Rottinghuis	Ming Ma
YARN-4598	Invalid event: RESOURCE_FAILED at CONTAINER_CLEANEDUP_AFTER_KILL	Major	nodemanager	tangshangwen	tangshangwen
YARN-4592	Remove unused GetContainerStatus proto	Minor	.	Chang Li	Chang Li
YARN-4520	FinishAppEvent is leaked in leveldb if no app's container running on this node	Major	nodemanager	sandflee	sandflee
MAPREDUCE-6610	JobHistoryEventHandler should not swallow timeline response	Trivial	.	Li Lu	Li Lu
HDFS-9690	ClientProtocol.addBlock is not idempotent after HDFS-8071	Major	namenode	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HADOOP-12743	Fix git environment check during test-patch	Major	.	Ray Chiang	Allen Wittenauer
HADOOP-12735	core-default.xml misspells hadoop.workaround.non.threadsafe.getpwuid	Minor	.	Ray Chiang	Ray Chiang
MAPREDUCE-6619	HADOOP_CLASSPATH is overwritten in MR container	Major	mrv2	shanyu zhao	Junping Du
HDFS-8999	Allow a file to be closed with COMMITTED but not yet COMPLETE blocks.	Major	namenode	Jitendra Nath Pandey	Tsz Wo Nicholas Sze
MAPREDUCE-6595	Fix findbugs warnings in OutputCommitter and FileOutputCommitter	Major	.	Akira Ajisaka	Akira Ajisaka
MAPREDUCE-6563	Streaming documentation contains a stray ‘%’ character.	Trivial	documentation	Chris Nauroth	Chris Nauroth
YARN-4519	potential deadlock of CapacityScheduler between decrease container and assign containers	Major	capacityscheduler	sandflee	MENG DING
MAPREDUCE-6616	Fail to create jobhistory file if there are some multibyte characters in the job name	Major	jobhistoryserver	Akira Ajisaka	Kousuke Saruta
YARN-4411	RMAppAttemptImpl#createApplicationAttemptReport throws IllegalArgumentException	Major	resourcemanager	yarntime	Bibin A Chundatt
YARN-4617	LeafQueue#pendingOrderingPolicy should always use fixed ordering policy instead of using same as active applications ordering policy	Major	capacity scheduler	Rohith Sharma K S	Rohith Sharma K S
YARN-4428	Redirect RM page to AHS page when AHS turned on and RM page is not available	Major	.	Chang Li	Chang Li
MAPREDUCE-6618	YarnClientProtocolProvider leaking the YarnClient thread.	Major	.	Xuan Gong	Xuan Gong
HDFS-9210	Fix some misuse of %n in VolumeScanner#printStats	Minor	datanode	Xiaoyu Yao	Xiaoyu Yao
HDFS-9701	DN may deadlock when hot-swapping under load	Major	.	Xiao Chen	Xiao Chen
YARN-3102	Decommisioned Nodes not listed in Web UI	Minor	resourcemanager	Bibin A Chundatt	Kuhu Shukla
HDFS-9406	FSImage may get corrupted after deleting snapshot	Major	namenode	Stanislav Antic	Yongjun Zhang
HDFS-9718	HAUtil#getConfForOtherNodes should unset independent generic keys before initialize	Major	namenode	DENG FEI	DENG FEI
HDFS-9708	FSNamesystem.initAuditLoggers() doesn't trim classnames	Minor	fs	Steve Loughran	Mingliang Liu
MAPREDUCE-6621	Memory Leak in JobClient#submitJobInternal()	Major	.	Xuan Gong	Xuan Gong
HADOOP-12755	Fix typo in defaultFS warning message	Trivial	.	Andrew Wang	Andrew Wang
HDFS-9739	DatanodeStorage.isValidStorageId() is broken	Critical	hdfs-client	Kihwal Lee	Mingliang Liu
HDFS-9740	Use a reasonable limit in DFSTestUtil.waitForMetric()	Major	test	Kihwal Lee	Chang Li
HADOOP-12761	incremental maven build is not really incremental	Minor	build	Sangjin Lee	Sangjin Lee
HDFS-9748	When addExpectedReplicasToPending is called twice, pendingReplications should avoid duplication	Minor	.	Walter Su	Walter Su
HDFS-9730	Storage ID update does not happen when there is a layout change	Major	datanode	Kihwal Lee	Tsz Wo Nicholas Sze
HDFS-9724	Degraded performance in WebHDFS listing as it does not reuse ObjectMapper	Critical	performance	Akira Ajisaka	Akira Ajisaka
HADOOP-12766	The default value of “hadoop.workaround.non.threadsafe.getpwuid” is different between core-default.xml and NativeIO.java	Minor	.	Akira Ajisaka	Akira Ajisaka
HDFS-9761	Rebalancer sleeps too long between iterations	Blocker	balancer & mover	Adrian Bridgett	Mingliang Liu
HDFS-9713	DataXceiver#copyBlock should return if block is pinned	Major	datanode	Uma Maheswara Rao G	Uma Maheswara Rao G
HADOOP-12773	HBase classes fail to load with client/job classloader enabled	Major	util	Sangjin Lee	Sangjin Lee
HDFS-9777	Fix typos in DFSAdmin command line and documentation	Trivial	hdfs-client	Wei-Chiu Chuang	Wei-Chiu Chuang
HDFS-9784	Example usage is not correct in Transparent Encryption document	Major	documentation	Takashi Ohnishi	Takashi Ohnishi
HDFS-9752	Permanent write failures may happen to slow writers during datanode rolling upgrades	Critical	.	Kihwal Lee	Walter Su
HDFS-9760	WebHDFS AuthFilter cannot be configured with custom AltKerberos auth handler	Major	webhdfs	Ryan Sasson	Ryan Sasson
HDFS-9779	TestReplicationPolicyWithNodeGroup NODE variable picks wrong rack value	Minor	test	Kuhu Shukla	Kuhu Shukla
HADOOP-12792	TestUserGroupInformation#testGetServerSideGroups fails in chroot	Minor	security, test	Eric Badger	Eric Badger
HDFS-9788	Incompatible tag renumbering in HeartbeatResponseProto	Blocker	rolling upgrades	Andrew Wang	Andrew Wang
HADOOP-12795	KMS does not log detailed stack trace for unexpected errors.	Major	kms	Chris Nauroth	Chris Nauroth
HADOOP-12699	TestKMS#testKMSProvider intermittently fails during ‘test rollover draining’	Major	.	Xiao Chen	Xiao Chen
HDFS-9790	HDFS Balancer should exit with a proper message if upgrade is not finalized	Major	.	Xiaobing Zhou	Xiaobing Zhou
HDFS-9801	ReconfigurableBase should update the cached configuration	Major	datanode	Arpit Agarwal	Arpit Agarwal
HADOOP-12780	During WASB atomic rename handle crash when one directory has been renamed but not file under it.	Critical	fs/azure	madhumita chakraborty	madhumita chakraborty
HADOOP-12589	Fix intermittent test failure of TestCopyPreserveFlag	Major	test	Tsuyoshi Ozawa	Masatake Iwasaki
HADOOP-12786	“hadoop key” command usage is not documented	Major	documentation	Akira Ajisaka	Xiao Chen
HDFS-9765	TestBlockScanner#testVolumeIteratorWithCaching fails intermittently	Major	test	Mingliang Liu	Akira Ajisaka
HDFS-9456	BlockPlacementPolicyWithNodeGroup should override verifyBlockPlacement	Major	.	Junping Du	Xiaobing Zhou
HADOOP-12810	FileSystem#listLocatedStatus causes unnecessary RPC calls	Major	fs, fs/s3	Ryan Blue	Ryan Blue
MAPREDUCE-6341	Fix typo in mapreduce tutorial	Trivial	.	John Michael Luy	John Michael Luy
HADOOP-12787	KMS SPNEGO sequence does not work with WEBHDFS	Major	kms, security	Xiaoyu Yao	Xiaoyu Yao
HDFS-9815	Move o.a.h.fs.Hdfs to hadoop-hdfs-client	Blocker	.	Haohui Mai	Vinayakumar B
HDFS-9799	Reimplement getCurrentTrashDir to remove incompatibility	Blocker	.	Zhe Zhang	Zhe Zhang
YARN-4654	Yarn node label CLI should parse “=” correctly when trying to remove all labels on a node	Major	.	Wangda Tan	Naganarasimha G R
HDFS-6832	Fix the usage of ‘hdfs namenode’ command	Minor	.	Akira Ajisaka	Manjunath Ballur
HDFS-8923	Add -source flag to balancer usage message	Trivial	balancer & mover, documentation	Chris Trezzo	Chris Trezzo
HDFS-9764	DistCp doesn't print value for several arguments including -numListstatusThreads	Minor	distcp	Yongjun Zhang	Wei-Chiu Chuang
MAPREDUCE-6637	Testcase Failure : TestFileInputFormat.testSplitLocationInfo	Major	test	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-9839	Reduce verbosity of processReport logging	Major	namenode	Arpit Agarwal	Arpit Agarwal
HDFS-7452	skip StandbyException log for getCorruptFiles()	Minor	.	Brahma Reddy Battula	Brahma Reddy Battula
YARN-4707	Remove the extra char (>) from SecureContainer.md	Major	documentation	Brahma Reddy Battula	Brahma Reddy Battula
YARN-4386	refreshNodesGracefully() should send recommission event to active RMNodes only	Minor	graceful	Kuhu Shukla	Kuhu Shukla
HDFS-9842	dfs.datanode.balance.bandwidthPerSec should accept friendly size units	Minor	balancer & mover	Yiqun Lin	Yiqun Lin
YARN-4709	NMWebServices produces incorrect JSON for containers	Critical	.	Varun Saxena	Varun Saxena
MAPREDUCE-6635	Unsafe long to int conversion in UncompressedSplitLineReader and IndexOutOfBoundsException	Critical	.	Sergey Shelukhin	Junping Du
HDFS-9549	TestCacheDirectives#testExceedsCapacity is flaky	Major	.	Wei-Chiu Chuang	Xiao Chen
YARN-2046	Out of band heartbeats are sent only on container kill and possibly too early	Major	nodemanager	Jason Lowe	Ming Ma
HDFS-9844	Correct path creation in getTrashRoot to handle root dir	Blocker	encryption	Zhe Zhang	Zhe Zhang
YARN-4722	AsyncDispatcher logs redundant event queue sizes	Major	.	Jason Lowe	Jason Lowe
HADOOP-12716	KerberosAuthenticator#doSpnegoSequence use incorrect class to determine isKeyTab in JDK8	Major	security	Xiaoyu Yao	Xiaoyu Yao
HDFS-9855	Modify TestAuditLoggerWithCommands to workaround the absence of HDFS-8332	Major	test	Kuhu Shukla	Kuhu Shukla
YARN-4723	NodesListManager$UnknownNodeId ClassCastException	Critical	resourcemanager	Jason Lowe	Kuhu Shukla
HADOOP-12849	TestSymlinkLocalFSFileSystem fails intermittently	Major	test	Mingliang Liu	Mingliang Liu
HADOOP-12831	LocalFS/FSOutputSummer NPEs in constructor if bytes per checksum set to 0	Minor	fs	Steve Loughran	Mingliang Liu
HADOOP-12846	Credential Provider Recursive Dependencies	Major	.	Larry McCay	Larry McCay
HDFS-9864	Correct reference for RENEWDELEGATIONTOKEN and CANCELDELEGATIONTOKEN in webhdfs doc	Major	documentation	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-12622	RetryPolicies (other than FailoverOnNetworkExceptionRetry) should put on retry failed reason or the log from RMProxy's retry could be very misleading.	Critical	auto-failover	Junping Du	Junping Du
YARN-4748	ApplicationHistoryManagerOnTimelineStore should not swallow exceptions on generateApplicationReport	Major	timelineserver	Li Lu	Li Lu
HADOOP-12851	S3AFileSystem Uptake of ProviderUtils.excludeIncompatibleCredentialProviders	Major	fs/s3	Larry McCay	Larry McCay
HADOOP-12843	Fix findbugs warnings in hadoop-common (branch-2)	Major	.	Akira Ajisaka	Akira Ajisaka
HDFS-9870	Remove unused imports from DFSUtil	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-8791	block ID-based DN storage layout can be very slow for datanode on ext4	Blocker	datanode	Nathan Roberts	Chris Trezzo
HDFS-9880	TestDatanodeRegistration fails occasionally	Major	test	Kihwal Lee	Kihwal Lee
HDFS-9881	DistributedFileSystem#getTrashRoot returns incorrect path for encryption zones	Critical	.	Andrew Wang	Andrew Wang
HDFS-9766	TestDataNodeMetrics#testDataNodeTimeSpend fails intermittently	Major	test	Mingliang Liu	Xiao Chen
HDFS-9851	Name node throws NPE when setPermission is called on a path that does not exist	Critical	namenode	David Yan	Brahma Reddy Battula
HDFS-9886	Configuration properties for hedged read is broken	Blocker	.	Akira Ajisaka	Akira Ajisaka
HADOOP-12870	Fix typo admininistration in CommandsManual.md	Minor	documentation	Akira Ajisaka	John Zhuge
HDFS-9048	DistCp documentation is out-of-dated	Major	.	Haohui Mai	Daisuke Kobayashi
HADOOP-12871	Fix dead link to NativeLibraries.html in CommandsManual.md	Minor	documentation	Akira Ajisaka	Brahma Reddy Battula
HADOOP-12872	Fix formatting in ServiceLevelAuth.md	Trivial	documentation	Akira Ajisaka	Brahma Reddy Battula
MAPREDUCE-4785	TestMRApp occasionally fails	Major	mrv2, test	Jason Lowe	Haibo Chen
HADOOP-12717	NPE when trying to rename a directory in Windows Azure Storage FileSystem	Blocker	.	Robert Yokota	Robert Yokota
YARN-4763	RMApps Page crashes with NPE	Major	webapp	Bibin A Chundatt	Bibin A Chundatt
YARN-4761	NMs reconnecting with changed capabilities can lead to wrong cluster resource calculations on fair scheduler	Major	fairscheduler	Sangjin Lee	Sangjin Lee
YARN-4744	Too many signal to container failure in case of LCE	Major	.	Bibin A Chundatt	Sidharta Seethana
YARN-4760	proxy redirect to history server uses wrong URL	Major	webapp	Jason Lowe	Eric Badger
HDFS-9865	TestBlockReplacement fails intermittently in trunk	Major	test	Yiqun Lin	Yiqun Lin
HDFS-9812	Streamer threads leak if failure happens when closing DFSOutputStream	Major	hdfs-client	Yiqun Lin	Yiqun Lin
HADOOP-12688	Fix deadlinks in Compatibility.md	Major	documentation	Akira Ajisaka	Gabor Liptak
HADOOP-12903	IPC Server should allow suppressing exception logging by type, not log ‘server too busy’ messages	Major	ipc	Arpit Agarwal	Arpit Agarwal
HDFS-9934	ReverseXML oiv processor should bail out if the XML file‘s layoutVersion doesn’t match oiv's	Major	tools	Colin P. McCabe	Colin P. McCabe
HDFS-9933	ReverseXML should be capitalized in oiv usage message	Minor	tools	Colin P. McCabe	Colin P. McCabe
HDFS-9953	Download File from UI broken after pagination	Blocker	namenode	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-9904	testCheckpointCancellationDuringUpload occasionally fails	Major	test	Kihwal Lee	Yiqun Lin
MAPREDUCE-6579	JobStatus#getFailureInfo should not output diagnostic information when the job is running	Blocker	test	Rohith Sharma K S	Akira Ajisaka
MAPREDUCE-6645	TestWordStats outputs logs under directories other than target/test-dir	Major	test	Akira Ajisaka	Gabor Liptak
HDFS-9874	Long living DataXceiver threads cause volume shutdown to block.	Critical	datanode	Rushabh S Shah	Rushabh S Shah
HDFS-3677	dfs.namenode.edits.dir.required missing from hdfs-default.xml	Major	documentation, namenode	Todd Lipcon	Mark Yang
HDFS-7166	SbNN Web UI shows #Under replicated blocks and #pending deletion blocks	Major	ha	Juan Yu	Wei-Chiu Chuang
YARN-4686	MiniYARNCluster.start() returns before cluster is completely started	Major	test	Rohith Sharma K S	Eric Badger
MAPREDUCE-6363	[NNBench] Lease mismatch error when running with multiple mappers	Critical	benchmarks	Brahma Reddy Battula	Bibin A Chundatt
HDFS-10189	PacketResponder#toString should include the downstreams for PacketResponderType.HAS_DOWNSTREAM_IN_PIPELINE	Minor	datanode	Joe Pallas	Joe Pallas
MAPREDUCE-6580	Test failure : TestMRJobsWithProfiler	Major	.	Rohith Sharma K S	Eric Badger
MAPREDUCE-6656	[NNBench] OP_DELETE operation isn't working after MAPREDUCE-6363	Blocker	.	J.Andreina	J.Andreina
HDFS-10193	fuse_dfs segfaults if uid cannot be resolved to a username	Major	fuse-dfs	John Thiltges	John Thiltges
HDFS-10199	Unit tests TestCopyFiles, TestDistCh, TestLogalyzer under org.apache.hadoop.tools are failing	Minor	.	Tibor Kiss	Tibor Kiss
YARN-4820	ResourceManager web redirects in HA mode drops query parameters	Major	.	Varun Vasudev	Varun Vasudev
YARN-4850	test-fair-scheduler.xml isn't valid xml	Blocker	fairscheduler, test	Allen Wittenauer	Yufei Gu
HADOOP-12962	KMS key names are incorrectly encoded when creating key	Major	.	Xiao Chen	Xiao Chen
HADOOP-12958	PhantomReference for filesystem statistics can trigger OOM	Major	.	Jason Lowe	Sangjin Lee
HADOOP-12873	Remove MRv1 terms from HttpAuthentication.md	Major	documentation	Akira Ajisaka	Brahma Reddy Battula
HDFS-10182	Hedged read might overwrite user's buf	Major	.	zhouyingchao	zhouyingchao
YARN-4773	Log aggregation performs extraneous filesystem operations when rolling log aggregation is disabled	Minor	nodemanager	Jason Lowe	Jun Gong
MAPREDUCE-6662	Clear ASF Warnings on test data files	Minor	.	Vinayakumar B	Vinayakumar B
HDFS-9871	“Bytes Being Moved” -ve(-1 B) when cluster was already balanced.	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
YARN-4863	AHS Security login should be in serviceInit() instead of serviceStart()	Major	timelineserver	Junping Du	Junping Du
HDFS-10197	TestFsDatasetCache failing intermittently due to timeout	Major	test	Yiqun Lin	Yiqun Lin
HDFS-9478	Reason for failing ipc.FairCallQueue contruction should be thrown	Minor	.	Archana T	Ajith S
HDFS-10228	TestHDFSCLI fails	Major	test	Akira Ajisaka	Akira Ajisaka
YARN-4865	Track Reserved resources in ResourceUsage and QueueCapacities	Major	resourcemanager	Sunil G	Sunil G
HADOOP-12972	Lz4Compressor#getLibraryName returns the wrong version number	Trivial	native	John Zhuge	Colin P. McCabe
HDFS-5177	blocksScheduled count should be decremented for abandoned blocks	Major	namenode	Vinayakumar B	Vinayakumar B
HDFS-10223	peerFromSocketAndKey performs SASL exchange before setting connection timeouts	Major	.	Colin P. McCabe	Colin P. McCabe
HDFS-10221	Add .json to the rat exclusions	Blocker	build	Ming Ma	Ming Ma
HADOOP-12902	JavaDocs for SignerSecretProvider are out-of-date in AuthenticationFilter	Major	documentation	Robert Kanter	Gabor Liptak
YARN-4183	Clarify the behavior of timeline service config properties	Major	.	Mit Desai	Naganarasimha G R
HDFS-10253	Fix TestRefreshCallQueue failure.	Major	.	Brahma Reddy Battula	Xiaoyu Yao
YARN-4746	yarn web services should convert parse failures of appId, appAttemptId and containerId to 400	Minor	webapp	Steve Loughran	Bibin A Chundatt
HDFS-9599	TestDecommissioningStatus.testDecommissionStatus occasionally fails	Major	namenode	Wei-Chiu Chuang	Yiqun Lin
YARN-4706	UI Hosting Configuration in TimelineServer doc is broken	Critical	documentation	Akira Ajisaka	Akira Ajisaka
HDFS-10178	Permanent write failures can happen if pipeline recoveries occur for the first packet	Critical	.	Kihwal Lee	Kihwal Lee
HDFS-8496	Calling stopWriter() with FSDatasetImpl lock held may block other threads	Major	.	zhouyingchao	Colin P. McCabe
HDFS-9917	IBR accumulate more objects when SNN was down for sometime.	Critical	.	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-10239	Fsshell mv fails if port usage doesn't match in src and destination paths	Major	.	Kuhu Shukla	Kuhu Shukla
YARN-4893	Fix some intermittent test failures in TestRMAdminService	Blocker	.	Junping Du	Brahma Reddy Battula
YARN-4916	TestNMProxy.tesNMProxyRPCRetry fails.	Minor	.	Tibor Kiss	Tibor Kiss
YARN-4915	Fix typo in YARN Secure Containers documentation	Trivial	documentation, yarn	Takashi Ohnishi	Takashi Ohnishi
YARN-4917	Fix typos in documentation of Capacity Scheduler.	Minor	documentation	Takashi Ohnishi	Takashi Ohnishi
HDFS-10261	TestBookKeeperHACheckpoints doesn't handle ephemeral HTTP ports	Major	.	Eric Badger	Eric Badger
YARN-4699	Scheduler UI and REST o/p is not in sync when -replaceLabelsOnNode is used to change label of a node	Critical	capacity scheduler	Sunil G	Sunil G
HADOOP-12022	fix site -Pdocs -Pdist in hadoop-project-dist; cleanout remaining forrest bits	Blocker	build	Allen Wittenauer	Allen Wittenauer
MAPREDUCE-6670	TestJobListCache#testEviction sometimes fails on Windows with timeout	Minor	test	Gergely Novák	Gergely Novák
HDFS-6520	hdfs fsck -move passes invalid length value when creating BlockReader	Major	.	Shengjun Xin	Xiao Chen
HDFS-10267	Extra “synchronized” on FsDatasetImpl#recoverAppend and FsDatasetImpl#recoverClose	Major	datanode	Colin P. McCabe	Colin P. McCabe
YARN-4740	AM may not receive the container complete msg when it restarts	Major	.	sandflee	sandflee
MAPREDUCE-6633	AM should retry map attempts if the reduce task encounters commpression related errors.	Major	.	Rushabh S Shah	Rushabh S Shah
YARN-4938	MiniYarnCluster should not request transitionToActive to RM on non-HA environment	Major	test	Akira Ajisaka	Eric Badger
HADOOP-12406	AbstractMapWritable.readFields throws ClassNotFoundException with custom writables	Blocker	io	Nadeem Douba	Nadeem Douba
HADOOP-12993	Change ShutdownHookManger complete shutdown log from INFO to DEBUG	Minor	.	Xiaoyu Yao	Xiaoyu Yao
HDFS-10277	PositionedReadable test testReadFullyZeroByteFile failing in HDFS	Major	test	Steve Loughran	Steve Loughran
HDFS-10271	Extra bytes are getting released from reservedSpace for append	Critical	.	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-12964	Http server vulnerable to clickjacking	Major	.	Haibo Chen	Haibo Chen
YARN-4794	Deadlock in NMClientImpl	Critical	.	Sumana Sathish	Jian He
HDFS-9772	TestBlockReplacement#testThrottler doesn't work as expected	Minor	.	Yiqun Lin	Yiqun Lin
HDFS-10270	TestJMXGet:testNameNode() fails	Minor	test	Andras Bokor	Gergely Novák
HDFS-10216	distcp -diff relative path exception	Major	distcp	John Zhuge	Takashi Ohnishi
YARN-4924	NM recovery race can lead to container not cleaned up	Major	nodemanager	Nathan Roberts	sandflee
HADOOP-12989	Some tests in org.apache.hadoop.fs.shell.find occasionally time out	Major	test	Akira Ajisaka	Takashi Ohnishi
HADOOP-13026	Should not wrap IOExceptions into a AuthenticationException in KerberosAuthenticator	Critical	.	Xuan Gong	Xuan Gong
YARN-4940	yarn node -list -all failed if RM start with decommissioned node	Major	.	sandflee	sandflee
YARN-4965	Distributed shell AM failed due to ClientHandlerException thrown by jersey	Critical	.	Sumana Sathish	Junping Du
YARN-4934	Reserved Resource for QueueMetrics needs to be handled correctly in few cases	Major	capacity scheduler	Sunil G	Sunil G
HDFS-10291	TestShortCircuitLocalRead failing	Major	test	Steve Loughran	Steve Loughran
HDFS-10275	TestDataNodeMetrics failing intermittently due to TotalWriteTime counted incorrectly	Major	test	Yiqun Lin	Yiqun Lin
MAPREDUCE-6649	getFailureInfo not returning any failure info	Major	.	Eric Badger	Eric Badger
HDFS-10265	OEV tool fails to read edit xml file if OP_UPDATE_BLOCKS has no BLOCK tag	Minor	tools	Wan Chang	Wan Chang
HDFS-9744	TestDirectoryScanner#testThrottling occasionally time out after 300 seconds	Minor	datanode	Wei-Chiu Chuang	Yiqun Lin
HDFS-10308	TestRetryCacheWithHA#testRetryCacheOnStandbyNN failing	Major	test	Rakesh R	Rakesh R
HDFS-10312	Large block reports may fail to decode at NameNode due to 64 MB protobuf maximum length restriction.	Major	namenode	Chris Nauroth	Chris Nauroth
MAPREDUCE-6680	JHS UserLogDir scan algorithm sometime could skip directory with update in CloudFS (Azure FileSystem, S3, etc.)	Major	jobhistoryserver	Junping Du	Junping Du
HDFS-9670	DistCp throws NPE when source is root	Major	distcp	Yongjun Zhang	John Zhuge
HADOOP-13042	Restore lost leveldbjni LICENSE and NOTICE changes	Major	.	Andrew Wang	Andrew Wang
HADOOP-13043	Add LICENSE.txt entries for bundled javascript dependencies	Major	.	Andrew Wang	Andrew Wang
HDFS-10319	Balancer should not try to pair storages with different types	Minor	balancer & mover	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HDFS-10309	Balancer doesn't honor dfs.blocksize value defined with suffix k(kilo), m(mega), g(giga)	Minor	balancer & mover	Amit Anand	Amit Anand
HDFS-9555	LazyPersistFileScrubber should still sleep if there are errors in the clear progress	Major	.	Phil Yang	Phil Yang
HADOOP-13052	ChecksumFileSystem mishandles crc file permissions	Major	fs	Daryn Sharp	Daryn Sharp
HDFS-9905	WebHdfsFileSystem#runWithRetry should display original stack trace on error	Major	test	Kihwal Lee	Wei-Chiu Chuang
HADOOP-11418	Property “io.compression.codec.lzo.class” does not work with other value besides default	Major	io	fang fang chen	Yuanbo Liu
HDFS-10318	TestJMXGet hides the real error in case of test failure	Minor	test	Andras Bokor	Andras Bokor
YARN-4556	TestFifoScheduler.testResourceOverCommit fails	Major	scheduler, test	Akihiro Suda	Akihiro Suda
HDFS-10329	Bad initialisation of StringBuffer in RequestHedgingProxyProvider.java	Minor	ha	Max Schaefer	Yiqun Lin
HDFS-10313	Distcp need to enforce the order of snapshot names passed to -diff	Major	distcp	Yongjun Zhang	Yiqun Lin
MAPREDUCE-6199	AbstractCounters are not reset completely on deserialization	Major	.	Anubhav Dhoot	Anubhav Dhoot
HADOOP-13030	Handle special characters in passwords in KMS startup script	Major	kms	Xiao Chen	Xiao Chen
YARN-4955	Add retry for SocketTimeoutException in TimelineClient	Critical	.	Xuan Gong	Xuan Gong
HDFS-9958	BlockManager#createLocatedBlocks can throw NPE for corruptBlocks on failed storages.	Major	.	Kuhu Shukla	Kuhu Shukla
YARN-5008	LeveldbRMStateStore database can grow substantially leading to long recovery times	Major	resourcemanager	Jason Lowe	Jason Lowe
YARN-5009	NMLeveldbStateStoreService database can grow substantially leading to longer recovery times	Major	nodemanager	Jason Lowe	Jason Lowe
HADOOP-12378	Fix findbugs warnings in hadoop-tools module	Major	tools	Akira Ajisaka	Akira Ajisaka
HDFS-10260	TestFsDatasetImpl#testCleanShutdownOfVolume often fails	Major	datanode, test	Wei-Chiu Chuang	Rushabh S Shah
HDFS-10335	Mover$Processor#chooseTarget() always chooses the first matching target storage group	Critical	balancer & mover	Mingliang Liu	Mingliang Liu
MAPREDUCE-6672	TestTeraSort fails on Windows	Minor	test	Tibor Kiss	Tibor Kiss
HDFS-10347	Namenode report bad block method doesn't log the bad block or datanode.	Minor	namenode	Rushabh S Shah	Rushabh S Shah
HADOOP-13072	WindowsGetSpaceUsed constructor should be public	Major	.	Vinayakumar B	Vinayakumar B
MAPREDUCE-6537	Include hadoop-pipes examples in the release tarball	Blocker	pipes	Allen Wittenauer	Kai Sasaki
HDFS-10353	Fix hadoop-hdfs-native-client compilation on Windows	Blocker	build	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-10344	DistributedFileSystem#getTrashRoots should skip encryption zone that does not have .Trash	Major	.	Namit Maheshwari	Xiaoyu Yao
HADOOP-13080	Refresh time in SysInfoWindows is in nanoseconds	Major	util	Inigo Goiri	Inigo Goiri
YARN-4834	ProcfsBasedProcessTree doesn't track daemonized processes	Major	nodemanager	Nathan Roberts	Nathan Roberts
HDFS-10320	Rack failures may result in NN terminate	Major	.	Xiao Chen	Xiao Chen
MAPREDUCE-6675	TestJobImpl.testUnusableNode failed	Major	mrv2	Haibo Chen	Haibo Chen
YARN-4311	Removing nodes from include and exclude lists will not remove them from decommissioned nodes list	Major	.	Kuhu Shukla	Kuhu Shukla
YARN-4984	LogAggregationService shouldn't swallow exception in handling createAppDir() which cause thread leak.	Critical	log-aggregation	Junping Du	Junping Du
HADOOP-13098	Dynamic LogLevel setting page should accept case-insensitive log level string	Major	.	Junping Du	Junping Du
HDFS-10324	Trash directory in an encryption zone should be pre-created with correct permissions	Major	encryption	Wei-Chiu Chuang	Wei-Chiu Chuang
MAPREDUCE-6514	Job hangs as ask is not updated after ramping down of all reducers	Blocker	applicationmaster	Varun Saxena	Varun Saxena
HDFS-2043	TestHFlush failing intermittently	Major	test	Aaron T. Myers	Yiqun Lin
HADOOP-12751	While using kerberos Hadoop incorrectly assumes names with ‘@’ to be non-simple	Critical	security	Bolke de Bruin	Bolke de Bruin
MAPREDUCE-6689	MapReduce job can infinitely increase number of reducer resource requests	Blocker	.	Wangda Tan	Wangda Tan
YARN-4747	AHS error 500 due to NPE when container start event is missing	Major	timelineserver	Jason Lowe	Varun Saxena
HDFS-9939	Increase DecompressorStream skip buffer size	Major	.	Yongjun Zhang	John Zhuge
YARN-5048	DelegationTokenRenewer#skipTokenRenewal may throw NPE	Major	.	Jian He	Jian He
YARN-4926	Change nodelabel rest API invalid reponse status to 400	Major	.	Bibin A Chundatt	Bibin A Chundatt
HDFS-10372	Fix for failing TestFsDatasetImpl#testCleanShutdownOfVolume	Major	test	Rushabh S Shah	Rushabh S Shah
MAPREDUCE-6684	High contention on scanning of user directory under immediate_done in Job History Server	Critical	jobhistoryserver	Haibo Chen	Haibo Chen
HDFS-6187	Update the document of hftp/hsftp in branch-2 to mention that they are deprecated	Major	.	Haohui Mai	Gergely Novák
YARN-4768	getAvailablePhysicalMemorySize can be inaccurate on linux	Major	nodemanager	Nathan Roberts	Nathan Roberts
HADOOP-13125	FS Contract tests don't report FS initialization errors well	Minor	test	Steve Loughran	Steve Loughran
YARN-5029	RM needs to send update event with YarnApplicationState as Running to ATS/AHS	Critical	.	Xuan Gong	Xuan Gong
HADOOP-13116	Jets3tNativeS3FileSystemContractTest does not run.	Minor	test	Chris Nauroth	Chris Nauroth
MAPREDUCE-6639	Process hangs in LocatedFileStatusFetcher if FileSystem.get throws	Major	mrv2	Ryan Blue	Ryan Blue
HADOOP-11180	Change log message “token.Token: Cannot find class for token kind kms-dt” to debug	Major	kms, security	Yi Liu	Yi Liu
MAPREDUCE-6558	multibyte delimiters with compressed input files generate duplicate records	Major	mrv1, mrv2	Wilfred Spiegelenburg	Wilfred Spiegelenburg
HADOOP-13083	The number of javadocs warnings is limited to 100	Critical	.	Li Lu	Gergely Novák
MAPREDUCE-6513	MR job got hanged forever when one NM unstable for some time	Critical	applicationmaster, resourcemanager	Bob.zhao	Varun Saxena
HDFS-10333	Intermittent org.apache.hadoop.hdfs.TestFileAppend failure in trunk	Major	hdfs	Yongjun Zhang	Yiqun Lin
HADOOP-12942	hadoop credential commands non-obviously use password of “none”	Major	security	Mike Yoder	Mike Yoder
YARN-4325	Nodemanager log handlers fail to send finished/failed events in some cases	Critical	.	Junping Du	Junping Du
HDFS-10242	Cannot create space quota of zero	Major	documentation, fs	Takashi Ohnishi	Takashi Ohnishi
MAPREDUCE-6693	ArrayIndexOutOfBoundsException occurs when the length of the job name is equal to mapreduce.jobhistory.jobname.limit	Critical	.	Bibin A Chundatt	Ajith S
HADOOP-13163	Reuse pre-computed filestatus in Distcp-CopyMapper	Minor	tools/distcp	Rajesh Balamohan	Rajesh Balamohan
HDFS-10303	DataStreamer#ResponseProcessor calculates packet ack latency incorrectly.	Major	hdfs-client	Surendra Singh Lilhore	Surendra Singh Lilhore
MAPREDUCE-6698	Increase timeout on TestUnnecessaryBlockingOnHistoryFileInfo.testTwoThreadsQueryingDifferentJobOfSameUser	Major	jobhistoryserver	Haibo Chen	Haibo Chen
HADOOP-13159	Fix potential NPE in Metrics2 source for DecayRpcScheduler	Major	ipc	Xiaoyu Yao	Xiaoyu Yao
HDFS-10397	Distcp should ignore -delete option if -diff option is provided instead of exiting	Major	distcp	Mingliang Liu	Mingliang Liu
HDFS-10381	DataStreamer DataNode exclusion log message should be warning	Minor	hdfs-client	John Zhuge	John Zhuge
HDFS-9226	MiniDFSCluster leaks dependency Mockito via DataNodeTestUtils	Major	test	Josh Elser	Josh Elser
HADOOP-13138	Unable to append to a SequenceFile with Compression.NONE.	Critical	.	Gervais Mickaël	Vinayakumar B
YARN-4925	ContainerRequest in AMRMClient, application should be able to specify nodes/racks together with nodeLabelExpression	Major	.	Bibin A Chundatt	Bibin A Chundatt
HADOOP-13157	Follow-on improvements to hadoop credential commands	Major	security	Mike Yoder	Mike Yoder
YARN-3840	Resource Manager web ui issue when sorting application by id (with application having id > 9999)	Major	resourcemanager	LINTE	Varun Saxena
HADOOP-13177	Native tests fail on OS X, because DYLD_LIBRARY_PATH is not defined to include libhadoop.dylib.	Minor	build	Chris Nauroth	Chris Nauroth
HADOOP-12767	update apache httpclient version to 4.5.2; httpcore to 4.4.4	Major	build	Artem Aliev	Artem Aliev
YARN-5100	The YarnApplicationState is always running in ATS no matter the application is running or finishes.	Blocker	.	Xuan Gong	Xuan Gong
HADOOP-13183	S3A proxy tests fail after httpclient/httpcore upgrade.	Major	fs/s3	Chris Nauroth	Steve Loughran
YARN-5020	Fix Documentation for Yarn Capacity Scheduler on Resource Calculator	Minor	.	Jo Desmet	Takashi Ohnishi
HDFS-10424	DatanodeLifelineProtocol not able to use under security cluster	Blocker	.	gu-chi	Chris Nauroth
HDFS-10438	When NameNode HA is configured to use the lifeline RPC server, it should log the address of that server.	Minor	ha, namenode	KWON BYUNGCHANG	Chris Nauroth
HDFS-10439	Update setOwner doc in HdfsPermissionsGuide	Minor	documentation	John Zhuge	John Zhuge
MAPREDUCE-6607	Enable regex pattern matching when mapreduce.task.files.preserve.filepattern is set	Minor	applicationmaster	Maysam Yabandeh	Kai Sasaki
YARN-5103	With NM recovery enabled, restarting NM multiple times results in AM restart	Critical	yarn	Sumana Sathish	Junping Du
YARN-5055	max apps per user can be larger than max per queue	Minor	capacityscheduler, resourcemanager	Jason Lowe	Eric Badger
YARN-3971	Skip RMNodeLabelsManager#checkRemoveFromClusterNodeLabelsOfQueue on nodelabel recovery	Critical	resourcemanager	Bibin A Chundatt	Bibin A Chundatt
HDFS-9365	Balancer does not work with the HDFS-6376 HA setup	Major	balancer & mover	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
YARN-3344	Fix warning - procfs stat file is not in the expected format	Major	.	Jon Bringhurst	Ravindra Kumar Naik
YARN-4459	container-executor should only kill process groups	Major	nodemanager	Jun Gong	Jun Gong
YARN-5166	javadoc:javadoc goal fails on hadoop-yarn-client	Major	.	Andras Bokor	Andras Bokor
HDFS-10276	HDFS should not expose path info that user has no permission to see.	Major	.	Kevin Cox	Yuanbo Liu
YARN-5132	Exclude generated protobuf sources from YARN Javadoc build	Critical	.	Subru Krishnan	Subru Krishnan
HADOOP-13132	Handle ClassCastException on AuthenticationException in LoadBalancingKMSClientProvider	Major	kms	Miklos Szurap	Wei-Chiu Chuang
HDFS-10415	TestDistributedFileSystem#MyDistributedFileSystem attempts to set up statistics before initialize() is called	Major	test	Sangjin Lee	Mingliang Liu
HADOOP-13137	TraceAdmin should support Kerberized cluster	Major	tracing	Wei-Chiu Chuang	Wei-Chiu Chuang
HDFS-9476	TestDFSUpgradeFromImage#testUpgradeFromRel1BBWImage occasionally fail	Major	.	Wei-Chiu Chuang	Masatake Iwasaki
HDFS-10367	TestDFSShell.testMoveWithTargetPortEmpty fails with Address bind exception.	Major	test	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-10471	DFSAdmin#SetQuotaCommand's help msg is not correct	Minor	documentation	Yiqun Lin	Yiqun Lin
YARN-5098	Yarn Application log Aggreagation fails due to NM can not get correct HDFS delegation token	Major	yarn	Yesha Vora	Jian He
HADOOP-13155	Implement TokenRenewer to renew and cancel delegation tokens in KMS	Major	kms, security	Xiao Chen	Xiao Chen
HDFS-10481	HTTPFS server should correctly impersonate as end user to open file	Major	httpfs	Xiao Chen	Xiao Chen
HDFS-10485	Fix findbugs warning in FSEditLog.java	Major	.	Akira Ajisaka	Akira Ajisaka
HDFS-10458	getFileEncryptionInfo should return quickly for non-encrypted cluster	Major	encryption, namenode	Zhe Zhang	Zhe Zhang
YARN-5206	RegistrySecurity includes id:pass in exception text if considered invalid	Minor	client, security	Steve Loughran	Steve Loughran
HDFS-10220	A large number of expired leases can make namenode unresponsive and cause failover	Major	namenode	Nicolas Fraison	Nicolas Fraison
HADOOP-13249	RetryInvocationHandler need wrap InterruptedException in IOException when call Thread.sleep	Major	ipc	zhihai xu	zhihai xu
HADOOP-13213	Small Documentation bug with AuthenticatedURL in hadoop-auth	Minor	documentation	Tom Ellis	Tom Ellis
HADOOP-13079	Add -q option to Ls to print ? instead of non-printable characters	Major	.	John Zhuge	John Zhuge
HDFS-10516	Fix bug when warming up EDEK cache of more than one encryption zone	Major	encryption, namenode	Xiao Chen	Xiao Chen
HADOOP-13270	BZip2CompressionInputStream finds the same compression marker twice in corner case, causing duplicate data blocks	Critical	.	Haibo Chen	Kai Sasaki
HADOOP-13179	GenericOptionsParser is not thread-safe because commons-cli OptionBuilder is not thread-safe	Minor	.	hongbin ma	hongbin ma
HADOOP-13244	o.a.h.ipc.Server#Server should honor handlerCount when queueSizePerHandler is specified in consturctor	Minor	ipc	Xiaoyu Yao	Kai Sasaki
HADOOP-13245	Fix up some misc create-release issues	Blocker	build	Allen Wittenauer	Allen Wittenauer
HDFS-10505	OIV's ReverseXML processor should support ACLs	Major	tools	Colin P. McCabe	Surendra Singh Lilhore
HDFS-10525	Fix NPE in CacheReplicationMonitor#rescanCachedBlockMap	Major	caching	Xiao Chen	Xiao Chen
YARN-5237	Fix missing log files issue in rolling log aggregation.	Major	.	Siddharth Seth	Xuan Gong
HDFS-10532	Typo in RollingUpgrade docs	Major	documentation	Arpit Agarwal	Yiqun Lin
HADOOP-3733	“s3:” URLs break when Secret Key contains a slash, even if encoded	Minor	fs/s3	Stuart Sierra	Steve Loughran
HDFS-9466	TestShortCircuitCache#testDataXceiverCleansUpSlotsOnFailure is flaky	Major	fs, hdfs-client	Wei-Chiu Chuang	Wei-Chiu Chuang
HADOOP-13255	KMSClientProvider should check and renew tgt when doing delegation token operations.	Major	kms	Xiao Chen	Xiao Chen
HADOOP-13285	DecayRpcScheduler MXBean should only report decayed CallVolumeSummary	Major	ipc	Namit Maheshwari	Xiaoyu Yao
HADOOP-13149	Windows distro build fails on dist-copynativelibs.	Blocker	build	Chris Nauroth	Chris Nauroth
YARN-5246	NMWebAppFilter web redirects drop query parameters	Major	.	Varun Vasudev	Varun Vasudev
HDFS-10474	hftp copy fails when file name with Chinese+special char in branch-2	Critical	.	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-13192	org.apache.hadoop.util.LineReader cannot handle multibyte delimiters correctly	Critical	util	binde	binde
HDFS-10448	CacheManager#addInternal tracks bytesNeeded incorrectly when dealing with replication factors other than 1	Major	caching	Yiqun Lin	Yiqun Lin
YARN-5197	RM leaks containers if running container disappears from node update	Major	resourcemanager	Jason Lowe	Jason Lowe
HADOOP-13287	TestS3ACredentials#testInstantiateFromURL fails if AWS secret key contains ‘+’.	Minor	fs/s3, test	Chris Nauroth	Chris Nauroth
HDFS-10556	DistCpOptions should be validated automatically	Major	distcp	Mingliang Liu	Mingliang Liu
MAPREDUCE-6725	Javadoc for CLI#listEvents() contains no-existent param	Minor	client, documentation	Shen Yinjie	Shen Yinjie
HDFS-7959	WebHdfs logging is missing on Datanode	Critical	.	Kihwal Lee	Kihwal Lee
MAPREDUCE-6542	HistoryViewer uses SimpleDateFormat, but SimpleDateFormat is not threadsafe	Major	jobhistoryserver	zhangyubiao	zhangyubiao
HADOOP-13251	Authenticate with Kerberos credentials when renewing KMS delegation token	Major	kms	Xiao Chen	Xiao Chen
HADOOP-13316	Enforce Kerberos authentication for required ops in DelegationTokenAuthenticator	Blocker	kms, security	Xiao Chen	Xiao Chen
HDFS-9852	hdfs dfs -setfacl error message is misleading	Minor	.	Wei-Chiu Chuang	Wei-Chiu Chuang
YARN-5262	Optimize sending RMNodeFinishedContainersPulledByAMEvent for every AM heartbeat	Major	resourcemanager	Rohith Sharma K S	Rohith Sharma K S
HADOOP-12345	Pad hostname correctly in CredentialsSys.java	Critical	nfs	Pradeep Nayak Udupi Kadbet	Pradeep Nayak Udupi Kadbet
HADOOP-13314	Remove ‘package-info.java’ from 'test\java\org\apache\hadoop\fs\shell' to remove eclipse compile error	Trivial	.	Vinayakumar B	Vinayakumar B
HDFS-10589	Javadoc for HAState#HAState and HAState#setStateInternal contains non-existent params	Minor	documentation, hdfs	Shen Yinjie	Shen Yinjie
YARN-5286	Add RPC port info in RM web service's response when getting app status	Major	.	Jun Gong	Jun Gong
YARN-5214	Pending on synchronized method DirectoryCollection#checkDirs can hang NM's NodeStatusUpdater	Critical	nodemanager	Junping Du	Junping Du
HADOOP-13350	Additional fix to LICENSE and NOTICE	Blocker	build	Xiao Chen	Xiao Chen
HDFS-10592	Fix intermittent test failure of TestNameNodeResourceChecker#testCheckThatNameNodeResourceMonitorIsRunning	Major	test	Rakesh R	Rakesh R
HADOOP-13320	Fix arguments check in documentation for WordCount v2.0	Minor	documentation	niccolo becchi	niccolo becchi
YARN-5314	ConcurrentModificationException in ATS v1.5 EntityGroupFSTimelineStore	Major	timelineserver	Karam Singh	Li Lu
YARN-4939	the decommissioning Node should keep alive if NM restart	Major	.	sandflee	sandflee
HADOOP-12893	Verify LICENSE.txt and NOTICE.txt	Blocker	build	Allen Wittenauer	Xiao Chen
HADOOP-13352	Make X-FRAME-OPTIONS configurable in HttpServer2	Major	net, security	Anu Engineer	Anu Engineer
HDFS-10336	TestBalancer failing intermittently because of not reseting UserGroupInformation completely	Major	test	Yiqun Lin	Yiqun Lin
HDFS-10512	VolumeScanner may terminate due to NPE in DataNode.reportBadBlocks	Major	datanode	Wei-Chiu Chuang	Yiqun Lin
YARN-5337	Fix OOM issue in DistributedShell. AM failed with “java.lang.OutOfMemoryError: GC overhead limit exceeded”	Major	.	Sumana Sathish	Jian He
HADOOP-13297	Add missing dependency in setting maven-remote-resource-plugin to fix builds	Major	build	Akira Ajisaka	Sean Busbey
YARN-5270	Solve miscellaneous issues caused by YARN-4844	Blocker	.	Wangda Tan	Wangda Tan
HDFS-10579	HDFS web interfaces lack configs for X-FRAME-OPTIONS protection	Major	datanode, namenode	Anu Engineer	Anu Engineer
MAPREDUCE-6625	TestCLI#testGetJob fails occasionally	Major	test	Jason Lowe	Haibo Chen
HADOOP-13315	FileContext#umask is not initialized properly	Minor	.	John Zhuge	John Zhuge
YARN-5353	ResourceManager can leak delegation tokens when they are shared across apps	Critical	resourcemanager	Jason Lowe	Jason Lowe
HADOOP-11361	Fix a race condition in MetricsSourceAdapter.updateJmxCache	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-10544	Balancer doesn't work with IPFailoverProxyProvider	Major	balancer & mover, ha	Zhe Zhang	Zhe Zhang
HADOOP-13351	TestDFSClientSocketSize buffer size tests are flaky	Major	.	Aaron Fabbri	Aaron Fabbri
HADOOP-13202	Avoid possible overflow in org.apache.hadoop.util.bloom.BloomFilter#getNBytes	Major	util	zhengbing li	Kai Sasaki
HDFS-10603	Fix flaky tests in org.apache.hadoop.hdfs.server.namenode.snapshot.TestOpenFilesWithSnapshot	Major	hdfs, namenode	Yongjun Zhang	Yiqun Lin
HADOOP-12991	Conflicting default ports in DelegateToFileSystem	Major	fs	Kevin Hogeland	Kai Sasaki
YARN-5309	Fix SSLFactory truststore reloader thread leak in TimelineClientImpl	Blocker	timelineserver, yarn	Thomas Friedrich	Weiwei Yang
HADOOP-13387	users always get told off for using S3 —even when not using it.	Minor	fs/s3	Steve Loughran	Steve Loughran
YARN-5340	Race condition in RollingLevelDBTimelineStore#getAndSetStartTime()	Critical	timelineserver	Sumana Sathish	Li Lu
HDFS-8914	Document HA support in the HDFS HdfsDesign.md	Major	documentation	Ravindra Babu	Lars Francke
HADOOP-12588	Fix intermittent test failure of TestGangliaMetrics	Major	.	Tsuyoshi Ozawa	Masatake Iwasaki
HADOOP-13240	TestAclCommands.testSetfaclValidations fail	Minor	test	linbao111	John Zhuge
HADOOP-13389	TestS3ATemporaryCredentials.testSTS error when using IAM credentials	Major	fs/s3	Steven K. Wong	Steven K. Wong
HADOOP-13406	S3AFileSystem: Consider reusing filestatus in delete() and mkdirs()	Minor	fs/s3	Rajesh Balamohan	Rajesh Balamohan
MAPREDUCE-6744	Increase timeout on TestDFSIO tests	Major	.	Eric Badger	Eric Badger
HDFS-10688	BPServiceActor may run into a tight loop for sending block report when hitting IOException	Major	datanode	Jing Zhao	Chen Liang
HDFS-10671	Fix typo in HdfsRollingUpgrade.md	Trivial	documentation	Yiqun Lin	Yiqun Lin
HADOOP-13422	ZKDelegationTokenSecretManager JaasConfig does not work well with other ZK users in process	Major	.	Sergey Shelukhin	Sergey Shelukhin
HDFS-10696	TestHDFSCLI fails	Major	test	Akira Ajisaka	Kai Sasaki
YARN-5432	Lock already held by another process while LevelDB cache store creation for dag	Critical	timelineserver	Karam Singh	Li Lu
YARN-5438	TimelineClientImpl leaking FileSystem Instances causing Long running services like HiverServer2 daemon going OOM	Major	timelineserver	Karam Singh	Rohith Sharma K S
HADOOP-13381	KMS clients should use KMS Delegation Tokens from current UGI.	Critical	kms	Xiao Chen	Xiao Chen
HDFS-10691	FileDistribution fails in hdfs oiv command due to ArrayIndexOutOfBoundsException	Major	.	Yiqun Lin	Yiqun Lin
YARN-5121	fix some container-executor portability issues	Blocker	nodemanager, security	Allen Wittenauer	Allen Wittenauer
MAPREDUCE-6724	Single shuffle to memory must not exceed Integer#MAX_VALUE	Major	mrv2	Haibo Chen	Haibo Chen
HDFS-5805	TestCheckpoint.testCheckpoint fails intermittently on branch2	Major	.	Mit Desai	Eric Badger
HADOOP-13459	hadoop-azure runs several test cases repeatedly, causing unnecessarily long running time.	Minor	fs/azure, test	Chris Nauroth	Chris Nauroth
HDFS-742	A down DataNode makes Balancer to hang on repeatingly asking NameNode its partial block list	Minor	balancer & mover	Hairong Kuang	Mit Desai
YARN-4280	CapacityScheduler reservations may not prevent indefinite postponement on a busy cluster	Major	capacity scheduler	Kuhu Shukla	Kuhu Shukla
YARN-5462	TestNodeStatusUpdater.testNodeStatusUpdaterRetryAndNMShutdown fails intermittently	Major	.	Eric Badger	Eric Badger
HDFS-10710	In BlockManager#rescanPostponedMisreplicatedBlocks(), postponed misreplicated block counts should be retrieved with NN lock protection	Major	namenode	Rui Gao	Rui Gao
YARN-5469	Increase timeout of TestAmFilter.testFilter	Minor	.	Eric Badger	Eric Badger
HDFS-10569	A bug causes OutOfIndex error in BlockListAsLongs	Minor	.	Weiwei Yang	Weiwei Yang
HADOOP-13434	Add quoting to Shell class	Major	.	Owen O'Malley	Owen O'Malley
MAPREDUCE-6682	TestMRCJCFileOutputCommitter fails intermittently	Major	test	Brahma Reddy Battula	Akira Ajisaka
HDFS-10716	In Balancer, the target task should be removed when its size < 0.	Minor	balancer & mover	Yiqun Lin	Yiqun Lin
HDFS-10722	Fix race condition in TestEditLog#testBatchedSyncWithClosedLogs	Major	hdfs	Daryn Sharp	Daryn Sharp
HADOOP-13467	Shell#getSignalKillCommand should use the bash builtin on Linux	Major	.	Arpit Agarwal	Arpit Agarwal
HDFS-10717	Fix findbugs warnings of hadoop-hdfs-client in branch-2	Major	.	Akira Ajisaka	Akira Ajisaka
HDFS-10343	BlockManager#createLocatedBlocks may return blocks on failed storages	Major	hdfs	Daryn Sharp	Kuhu Shukla
HDFS-10715	NPE when applying AvailableSpaceBlockPlacementPolicy	Major	namenode	Guangbin Zhu	Guangbin Zhu
YARN-4624	NPE in PartitionQueueCapacitiesInfo while accessing Schduler UI	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-10823	TestReloadingX509TrustManager is flaky	Major	.	Ratandeep Ratti	Mingliang Liu
HADOOP-13457	Remove hardcoded absolute path for shell executable	Major	util	Arpit Agarwal	Chen Liang
HADOOP-13439	Fix race between TestMetricsSystemImpl and TestGangliaMetrics	Minor	test	Masatake Iwasaki	Chen Liang
MAPREDUCE-6750	TestHSAdminServer.testRefreshSuperUserGroups is failing	Minor	test	Kihwal Lee	Kihwal Lee
HADOOP-13473	Tracing in IPC Server is broken	Major	.	Wei-Chiu Chuang	Daryn Sharp
HDFS-10738	Fix TestRefreshUserMappings.testRefreshSuperUserGroupsConfiguration test failure	Major	test	Rakesh R	Rakesh R
HADOOP-13299	JMXJsonServlet is vulnerable to TRACE	Minor	.	Haibo Chen	Haibo Chen
HDFS-8224	Schedule a block for scanning if its metadata file is corrupt	Major	datanode	Rushabh S Shah	Rushabh S Shah
YARN-5382	RM does not audit log kill request for active applications	Major	resourcemanager	Jason Lowe	Vrushali C
HDFS-10643	Namenode should use loginUser(hdfs) to generateEncryptedKey	Major	encryption, namenode	Xiaoyu Yao	Xiaoyu Yao
HDFS-8897	Balancer should handle fs.defaultFS trailing slash in HA	Major	balancer & mover	LINTE	John Zhuge
HDFS-10731	FSDirectory#verifyMaxDirItems does not log path name	Minor	namenode	Wei-Chiu Chuang	Wei-Chiu Chuang
YARN-5476	Not existed application reported as ACCEPTED state by YarnClientImpl	Critical	yarn	Yesha Vora	Junping Du
YARN-5491	Random Failure TestCapacityScheduler#testCSQueueBlocked	Major	test	Bibin A Chundatt	Bibin A Chundatt
HADOOP-13333	testConf.xml ls comparators in wrong order	Trivial	fs	John Zhuge	Vrushali C
HADOOP-13470	GenericTestUtils$LogCapturer is flaky	Major	test, util	Mingliang Liu	Mingliang Liu
HADOOP-13494	ReconfigurableBase can log sensitive information	Major	security	Sean Mackrory	Sean Mackrory
HDFS-9530	ReservedSpace is not cleared for abandoned Blocks	Critical	datanode	Fei Hui	Brahma Reddy Battula
HDFS-10549	Correctly revoke file leases when closing files	Major	hdfs-client	Yiqun Lin	Yiqun Lin
HADOOP-13513	Java 1.7 support for org.apache.hadoop.fs.azure testcases	Minor	fs/azure	Tibor Kiss	Tibor Kiss
HADOOP-13512	ReloadingX509TrustManager should keep reloading in case of exception	Critical	security	Mingliang Liu	Mingliang Liu
YARN-4307	Display blacklisted nodes for AM container in the RM web UI	Major	resourcemanager, webapp	Naganarasimha G R	Naganarasimha G R
MAPREDUCE-6763	Shuffle server listen queue is too small	Major	mrv2	Jason Lowe	Jason Lowe
YARN-4837	User facing aspects of ‘AM blacklisting’ feature need fixing	Critical	.	Vinod Kumar Vavilapalli	Vinod Kumar Vavilapalli
MAPREDUCE-6310	Add jdiff support to MapReduce	Blocker	.	Li Lu	Li Lu
YARN-3388	Allocation in LeafQueue could get stuck because DRF calculator isn't well supported when computing user-limit	Major	capacityscheduler	Nathan Roberts	Nathan Roberts
YARN-4685	Disable AM blacklisting by default to mitigate situations that application get hanged	Critical	resourcemanager	Rohith Sharma K S	Rohith Sharma K S
HADOOP-13428	Fix hadoop-common to generate jdiff	Blocker	.	Wangda Tan	Wangda Tan
HDFS-10764	Fix INodeFile#getBlocks to not return null	Major	namenode	Arpit Agarwal	Arpit Agarwal
HDFS-10692	Point JDiff base version for HDFS from 2.6.0 to 2.7.2	Blocker	.	Wangda Tan	Wangda Tan
HADOOP-13487	Hadoop KMS should load old delegation tokens from Zookeeper on startup	Major	kms	Alex Ivanov	Xiao Chen
HDFS-10783	The option ‘-maxSize’ and ‘-step’ fail in OfflineImageViewer	Major	tools	Yiqun Lin	Yiqun Lin
HADOOP-13524	mvn eclipse:eclipse generates .gitignore'able files	Major	.	Vinod Kumar Vavilapalli	Vinod Kumar Vavilapalli
HADOOP-13497	fix wrong command in CredentialProviderAPI.md	Trivial	documentation	Yuanbo Liu	Yuanbo Liu
MAPREDUCE-6761	Regression when handling providers - invalid configuration ServiceConfiguration causes Cluster initialization failure	Major	mrv2	Peter Vary	Peter Vary
HDFS-10748	TestFileTruncate#testTruncateWithDataNodesRestart runs sometimes timeout	Major	test	Xiaoyu Yao	Yiqun Lin
HDFS-10793	Fix HdfsAuditLogger binary incompatibility introduced by HDFS-9184	Blocker	.	Andrew Wang	Manoj Govindassamy
HDFS-10652	Add a unit test for HDFS-4660	Major	datanode, hdfs	Yongjun Zhang	Vinayakumar B
HADOOP-13552	RetryInvocationHandler logs all remote exceptions	Blocker	ipc	Jason Lowe	Jason Lowe
HADOOP-12765	HttpServer2 should switch to using the non-blocking SslSelectChannelConnector to prevent performance degradation when handling SSL connections	Major	.	Min Shen	Min Shen
MAPREDUCE-6768	TestRecovery.testSpeculative failed with NPE	Major	mrv2	Haibo Chen	Haibo Chen
HADOOP-13559	Remove close() within try-with-resources in ChecksumFileSystem/ChecksumFs classes	Minor	fs	Aaron Fabbri	Aaron Fabbri
HDFS-4210	Throw helpful exception when DNS entry for JournalNode cannot be resolved	Trivial	ha, journal-node, namenode	Damien Hardy	John Zhuge
MAPREDUCE-4784	TestRecovery occasionally fails	Major	mrv2, test	Jason Lowe	Haibo Chen
HDFS-10760	DataXceiver#run() should not log InvalidToken exception as an error	Major	.	Pan Yuxuan	Pan Yuxuan
HDFS-10729	Improve log message for edit loading failures caused by FS limit checks.	Major	namenode	Wei-Chiu Chuang	Wei-Chiu Chuang
YARN-5221	Expose UpdateResourceRequest API to allow AM to request for change in container properties	Major	.	Arun Suresh	Arun Suresh
HADOOP-13375	o.a.h.security.TestGroupsCaching.testBackgroundRefreshCounters seems flaky	Major	security, test	Mingliang Liu	Weiwei Yang
YARN-5555	Scheduler UI: “% of Queue” is inaccurate if leaf queue is hierarchically nested.	Minor	.	Eric Payne	Eric Payne
YARN-5549	AMLauncher#createAMContainerLaunchContext() should not log the command to be launched indiscriminately	Critical	resourcemanager	Daniel Templeton	Daniel Templeton
HDFS-10841	Remove duplicate or unused variable in appendFile()	Minor	.	Kihwal Lee	Kihwal Lee
HADOOP-13558	UserGroupInformation created from a Subject incorrectly tries to renew the Kerberos ticket	Major	security	Alejandro Abdelnur	Xiao Chen
HDFS-9038	DFS reserved space is erroneously counted towards non-DFS used.	Major	datanode	Chris Nauroth	Brahma Reddy Battula
HDFS-10832	Propagate ACL bit and isEncrypted bit in HttpFS FileStatus permissions	Critical	httpfs	Andrew Wang	Andrew Wang
YARN-5632	UPDATE_EXECUTION_TYPE causes UpdateContainerRequestPBImpl to throw	Major	api	Jason Lowe	Jason Lowe
HDFS-9781	FsDatasetImpl#getBlockReports can occasionally throw NullPointerException	Major	datanode	Wei-Chiu Chuang	Manoj Govindassamy
HDFS-10830	FsDatasetImpl#removeVolumes crashes with IllegalMonitorStateException when vol being removed is in use	Major	hdfs	Manoj Govindassamy	Arpit Agarwal
YARN-5190	Registering/unregistering container metrics triggered by ContainerEvent and ContainersMonitorEvent are conflict which cause uncaught exception in ContainerMonitorImpl	Blocker	.	Junping Du	Junping Du
HDFS-10856	Update the comment of BPServiceActor$Scheduler#scheduleNextBlockReport	Minor	documentation	Akira Ajisaka	Yiqun Lin
YARN-5630	NM fails to start after downgrade from 2.8 to 2.7	Blocker	nodemanager	Jason Lowe	Jason Lowe
HADOOP-13616	Broken code snippet area in Hadoop Benchmarking	Minor	documentation	Kai Sasaki	Kai Sasaki
HDFS-10862	Typos in 4 log messages	Trivial	.	Mehran Hassani	Mehran Hassani
YARN-4232	TopCLI console support for HA mode	Minor	.	Bibin A Chundatt	Bibin A Chundatt
YARN-5655	TestContainerManagerSecurity#testNMTokens is asserting	Major	.	Jason Lowe	Robert Kanter
HDFS-10879	TestEncryptionZonesWithKMS#testReadWrite fails intermittently	Major	.	Xiao Chen	Xiao Chen
YARN-5539	TimelineClient failed to retry on “java.net.SocketTimeoutException: Read timed out”	Critical	yarn	Sumana Sathish	Junping Du
HADOOP-13643	Math error in AbstractContractDistCpTest	Minor	.	Aaron Fabbri	Aaron Fabbri
HDFS-10886	Replace “fs.default.name” with “fs.defaultFS” in viewfs document	Minor	documentation, federation	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-13535	Add jetty6 acceptor startup issue workaround to branch-2	Major	.	Wei-Chiu Chuang	Min Shen
YARN-5664	Fix Yarn documentation to link to correct versions.	Minor	.	Xiao Chen	Xiao Chen
YARN-5663	Small refactor in ZKRMStateStore	Minor	resourcemanager	Oleksii Dymytrov	Oleksii Dymytrov
HADOOP-12597	In kms-site.xml configuration “hadoop.security.keystore.JavaKeyStoreProvider.password” should be updated with new name	Minor	security	huangyitian	Surendra Singh Lilhore
HADOOP-13638	KMS should set UGI's Configuration object properly	Major	kms	Wei-Chiu Chuang	Wei-Chiu Chuang
HDFS-9885	Correct the distcp counters name while displaying counters	Minor	distcp	Archana T	Surendra Singh Lilhore
YARN-5660	Wrong audit constants are used in Get/Put of priority in RMWebService	Trivial	resourcemanager	Rohith Sharma K S	Rohith Sharma K S
HDFS-10889	Remove outdated Fault Injection Framework documentaion	Major	documentation	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-10713	Throttle FsNameSystem lock warnings	Major	logging, namenode	Arpit Agarwal	Hanisha Koneru
HDFS-10426	TestPendingInvalidateBlock failed in trunk	Major	test	Yiqun Lin	Yiqun Lin
HDFS-10828	Fix usage of FsDatasetImpl object lock in ReplicaMap	Blocker	.	Arpit Agarwal	Arpit Agarwal
YARN-5631	Missing refreshClusterMaxPriority usage in rmadmin help message	Minor	.	Kai Sasaki	Kai Sasaki
HDFS-9444	Add utility to find set of available ephemeral ports to ServerSocketUtil	Major	.	Brahma Reddy Battula	Masatake Iwasaki
HDFS-10824	MiniDFSCluster#storageCapacities has no effects on real capacity	Major	.	Xiaobing Zhou	Xiaobing Zhou
HDFS-10914	Move remnants of oah.hdfs.client to hadoop-hdfs-client	Critical	hdfs-client	Andrew Wang	Andrew Wang
MAPREDUCE-6771	RMContainerAllocator sends container diagnostics event after corresponding completion event	Major	mrv2	Haibo Chen	Haibo Chen
HADOOP-13640	Fix findbugs warning in VersionInfoMojo.java	Major	.	Tsuyoshi Ozawa	Yuanbo Liu
HDFS-10850	getEZForPath should NOT throw FNF	Blocker	hdfs	Daryn Sharp	Andrew Wang
HDFS-10945	Fix the Findbugwaring FSNamesystem#renameTo(String, String, boolean) in branch-2	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-10810	Setreplication removing block from underconstrcution temporarily when batch IBR is enabled.	Major	namenode	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-10944	Correct the javadoc of dfsadmin#disallowSnapshot	Minor	documentation	Jagadesh Kiran N	Jagadesh Kiran N
HDFS-10947	Correct the API name for truncate in webhdfs document	Major	documentation	Surendra Singh Lilhore	Surendra Singh Lilhore
HADOOP-12667	s3a: Support createNonRecursive API	Major	fs/s3	Sean Mackrory	Sean Mackrory
HDFS-10609	Uncaught InvalidEncryptionKeyException during pipeline recovery may abort downstream applications	Major	encryption	Wei-Chiu Chuang	Wei-Chiu Chuang
HDFS-10962	TestRequestHedgingProxyProvider is flaky	Major	test	Andrew Wang	Andrew Wang
MAPREDUCE-6740	Enforce mapreduce.task.timeout to be at least mapreduce.task.progress-report.interval	Minor	mr-am	Haibo Chen	Haibo Chen
YARN-5101	YARN_APPLICATION_UPDATED event is parsed in ApplicationHistoryManagerOnTimelineStore#convertToApplicationReport with reversed order	Major	.	Xuan Gong	Sunil G
YARN-5659	getPathFromYarnURL should use standard methods	Major	.	Sergey Shelukhin	Sergey Shelukhin
HADOOP-12611	TestZKSignerSecretProvider#testMultipleInit occasionally fail	Major	.	Wei-Chiu Chuang	Eric Badger
HDFS-10797	Disk usage summary of snapshots causes renamed blocks to get counted twice	Major	snapshots	Sean Mackrory	Sean Mackrory
HDFS-10991	Export hdfsTruncateFile symbol in libhdfs	Blocker	libhdfs	Surendra Singh Lilhore	Surendra Singh Lilhore
HADOOP-13700	Remove unthrown IOException from TrashPolicy#initialize and #getInstance signatures	Critical	fs	Haibo Chen	Andrew Wang
HDFS-11002	Fix broken attr/getfattr/setfattr links in ExtendedAttributes.md	Major	documentation	Mingliang Liu	Mingliang Liu
HDFS-11000	webhdfs PUT does not work if requests are routed to call queue.	Major	.	Kihwal Lee	Kihwal Lee
HDFS-10987	Make Decommission less expensive when lot of blocks present.	Critical	.	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-13024	Distcp with -delete feature on raw data not implemented	Major	tools/distcp	Mavin Martin	Mavin Martin
HDFS-10986	DFSAdmin should log detailed error message if any	Major	tools	Mingliang Liu	Mingliang Liu
HDFS-10990	TestPendingInvalidateBlock should wait for IBRs	Minor	.	Yiqun Lin	Yiqun Lin
HDFS-10735	Distcp using webhdfs on secure HA clusters fails with StandbyException	Major	webhdfs	Benoy Antony	Benoy Antony
HDFS-10883	getTrashRoot's behavior is not consistent in DFS after enabling EZ.	Major	.	Yuanbo Liu	Yuanbo Liu
HADOOP-13707	If kerberos is enabled while HTTP SPNEGO is not configured, some links cannot be accessed	Major	.	Yuanbo Liu	Yuanbo Liu
HDFS-10301	BlockReport retransmissions may lead to storages falsely being declared zombie if storage report processing happens out of order	Critical	namenode	Konstantin Shvachko	Vinitha Reddy Gankidi
HDFS-10712	Fix TestDataNodeVolumeFailure on 2.* branches.	Major	.	Konstantin Shvachko	Vinitha Reddy Gankidi
HDFS-10920	TestStorageMover#testNoSpaceDisk is failing intermittently	Major	test	Rakesh R	Rakesh R
HDFS-10960	TestDataNodeHotSwapVolumes#testRemoveVolumeBeingWritten fails at disk error verification after volume remove	Minor	hdfs	Manoj Govindassamy	Manoj Govindassamy
HDFS-10752	Several log refactoring/improvement suggestion in HDFS	Major	.	Nemo Chen	Hanisha Koneru
HDFS-11025	TestDiskspaceQuotaUpdate fails in trunk due to Bind exception	Minor	.	Yiqun Lin	Yiqun Lin
HDFS-11018	Incorrect check and message in FsDatasetImpl#invalidate	Major	datanode	Wei-Chiu Chuang	Yiqun Lin
HADOOP-13236	truncate will fail when we use viewfilesystem	Major	.	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-13749	KMSClientProvider combined with KeyProviderCache can result in wrong UGI being used	Critical	.	Sergey Shelukhin	Xiaoyu Yao
HDFS-11042	Add missing cleanupSSLConfig() call for tests that use setupSSLConfig()	Major	test	Kuhu Shukla	Kuhu Shukla
HDFS-11015	Enforce timeout in balancer	Major	balancer & mover	Kihwal Lee	Kihwal Lee
YARN-5677	RM should transition to standby when connection is lost for an extended period	Critical	resourcemanager	Daniel Templeton	Daniel Templeton
HDFS-11054	Suppress verbose log message in BlockPlacementPolicyDefault	Major	.	Arpit Agarwal	Chen Liang
HDFS-11050	Change log level to ‘warn’ when ssl initialization fails and defaults to DEFAULT_TIMEOUT_CONN_CONFIGURATOR	Major	.	Kuhu Shukla	Kuhu Shukla
HDFS-8492	DN should notify NN when client requests a missing block	Major	.	Daryn Sharp	Walter Su
MAPREDUCE-6541	Exclude scheduled reducer memory when calculating available mapper slots from headroom to avoid deadlock	Major	.	Wangda Tan	Varun Saxena
YARN-3848	TestNodeLabelContainerAllocation is not timing out	Major	test	Jason Lowe	Varun Saxena
HADOOP-13201	Print the directory paths when ViewFs denies the rename operation on internal dirs	Major	viewfs	Tianyin Xu	Rakesh R
YARN-4831	Recovered containers will be killed after NM stateful restart	Major	nodemanager	Siqi Li	Siqi Li
YARN-3432	Cluster metrics have wrong Total Memory when there is reserved memory on CS	Major	capacityscheduler, resourcemanager	Thomas Graves	Brahma Reddy Battula
HDFS-9500	datanodesSoftwareVersions map may counting wrong when rolling upgrade	Major	.	Phil Yang	Erik Krogen
MAPREDUCE-2631	Potential resource leaks in BinaryProtocol$TeeOutputStream.java	Major	.	Ravi Teja Ch N V	Sunil G
HADOOP-13770	Shell.checkIsBashSupported swallowed an interrupted exception	Blocker	util	Wei-Chiu Chuang	Wei-Chiu Chuang
YARN-5027	NM should clean up app log dirs after NM restart	Major	nodemanager	sandflee	sandflee
YARN-5767	Fix the order that resources are cleaned up from the local Public/Private caches	Major	.	Chris Trezzo	Chris Trezzo
HDFS-11061	Update dfs -count -t command line help and documentation	Minor	documentation, fs	Wei-Chiu Chuang	Yiqun Lin
YARN-5773	RM recovery too slow due to LeafQueue#activateApplication()	Critical	capacity scheduler, rolling upgrade	Bibin A Chundatt	Bibin A Chundatt
HDFS-10455	Logging the username when deny the setOwner operation	Minor	namenode	Tianyin Xu	Rakesh R
HADOOP-13773	wrong HADOOP_CLIENT_OPTS in hadoop-env on branch-2	Major	conf	Fei Hui	Fei Hui
YARN-5001	Aggregated Logs root directory is created with wrong group if nonexistent	Major	log-aggregation, nodemanager, security	Haibo Chen	Haibo Chen
YARN-5815	Random failure of TestApplicationPriority.testOrderOfActivatingThePriorityApplicationOnRMRestart	Major	.	Bibin A Chundatt	Bibin A Chundatt
HDFS-11097	Fix the jenkins warning related to the deprecated method StorageReceivedDeletedBlocks	Major	.	Yiqun Lin	Yiqun Lin
YARN-5837	NPE when getting node status of a decommissioned node after an RM restart	Major	.	Robert Kanter	Robert Kanter
HADOOP-13798	TestHadoopArchives times out	Major	test	Akira Ajisaka	Akira Ajisaka
HADOOP-13797	Remove hardcoded absolute path for ls	Major	util	Christine Koppelt	Christine Koppelt
HADOOP-13804	MutableStat mean loses accuracy if add(long, long) is used	Minor	metrics	Erik Krogen	Erik Krogen
HDFS-11128	CreateEditsLog throws NullPointerException	Major	hdfs	Hanisha Koneru	Hanisha Koneru
HDFS-11129	TestAppendSnapshotTruncate fails with bind exception	Major	test	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-13813	TestDelegationTokenFetcher#testDelegationTokenWithoutRenewer is failing	Major	security, test	Mingliang Liu	Mingliang Liu
HDFS-11087	NamenodeFsck should check if the output writer is still writable.	Major	namenode	Konstantin Shvachko	Erik Krogen
HDFS-11135	The tests in TestBalancer run fails due to NPE	Major	test	Yiqun Lin	Yiqun Lin
HDFS-11056	Concurrent append and read operations lead to checksum error	Major	datanode, httpfs	Wei-Chiu Chuang	Wei-Chiu Chuang
MAPREDUCE-6797	Job history server scans can become blocked on a single, slow entry	Critical	jobhistoryserver	Prabhu Joseph	Prabhu Joseph
YARN-4355	NPE while processing localizer heartbeat	Major	nodemanager	Jason Lowe	Varun Saxena
YARN-4218	Metric for resource*time that was preempted	Major	resourcemanager	Chang Li	Chang Li
YARN-5875	TestTokenClientRMService#testTokenRenewalWrongUser fails	Major	.	Varun Saxena	Gergely Novák
HADOOP-13815	TestKMS#testDelegationTokensOpsSimple and TestKMS#testDelegationTokensOpsKerberized Fails in Trunk	Major	test	Brahma Reddy Battula	Xiao Chen
YARN-5836	Malicious AM can kill containers of other apps running in any node its containers are running	Minor	nodemanager	Botong Huang	Botong Huang
HDFS-11134	Fix bind exception threw in TestRenameWhileOpen	Major	.	Yiqun Lin	Yiqun Lin
MAPREDUCE-6801	Fix flaky TestKill.testKillJob()	Major	mrv2	Haibo Chen	Haibo Chen
HADOOP-13814	Sample configuration of KMS HTTP Authentication signature is misleading	Minor	conf, documentation, kms	Masahiro Tanaka	Masahiro Tanaka
HDFS-11144	TestFileCreationDelete#testFileCreationDeleteParent fails wind bind exception	Major	test	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-11101	TestDFSShell#testMoveWithTargetPortEmpty fails intermittently	Major	test	Brahma Reddy Battula	Brahma Reddy Battula
YARN-5859	TestResourceLocalizationService#testParallelDownloadAttemptsForPublicResource sometimes fails	Major	test	Jason Lowe	Eric Badger
HADOOP-13663	Index out of range in SysInfoWindows	Major	scripts	Inigo Goiri	Inigo Goiri
HDFS-11174	Wrong HttpFS test command in doc	Minor	documentation, httpfs	John Zhuge	John Zhuge
HADOOP-13820	Replace ugi.getUsername() with ugi.getShortUserName() in viewFS	Minor	viewfs	Archana T	Brahma Reddy Battula
HADOOP-13838	KMSTokenRenewer should close providers	Critical	kms	Xiao Chen	Xiao Chen
HADOOP-13830	Intermittent failure of ITestS3NContractRootDir#testRecursiveRootListing: “Can not create a Path from an empty string”	Minor	fs/s3, test	Steve Loughran	Steve Loughran
YARN-5915	ATS 1.5 FileSystemTimelineWriter causes flush() to be called after every event write	Major	timelineserver	Atul Sikaria	Atul Sikaria
MAPREDUCE-6815	Fix flaky TestKill.testKillTask()	Major	mrv2	Haibo Chen	Haibo Chen
HDFS-11181	Fuse wrapper has a typo	Trivial	fuse-dfs	Wei-Chiu Chuang	Wei-Chiu Chuang
HADOOP-13847	KMSWebApp should close KeyProviderCryptoExtension	Major	kms	Anthony Young-Garner	John Zhuge
YARN-5559	Analyse 2.8.0/3.0.0 jdiff reports and fix any issues	Blocker	resourcemanager	Wangda Tan	Akira Ajisaka
HADOOP-13861	Spelling errors in logging and exceptions for code	Major	common, fs, io, security	Grant Sohn	Grant Sohn
HDFS-11180	Intermittent deadlock in NameNode when failover happens.	Blocker	namenode	Abhishek Modi	Akira Ajisaka
HDFS-11198	NN UI should link DN web address using hostnames	Critical	.	Kihwal Lee	Weiwei Yang
MAPREDUCE-6816	Progress bars in Web UI always at 100%	Blocker	webapps	Shen Yinjie	Shen Yinjie
YARN-5184	Fix up incompatible changes introduced on ContainerStatus and NodeReport	Blocker	api	Karthik Kambatla	Sangjin Lee
YARN-5921	Incorrect synchronization in RMContextImpl#setHAServiceState/getHAServiceState	Major	.	Varun Saxena	Varun Saxena
HDFS-11140	Directory Scanner should log startup message time correctly	Minor	.	Xiao Chen	Yiqun Lin
HDFS-11223	Fix typos in HttpFs documentations	Trivial	documentation	Yiqun Lin	Yiqun Lin
HDFS-11197	Listing encryption zones fails when deleting a EZ that is on a snapshotted directory	Minor	hdfs	Wellington Chevreuil	Wellington Chevreuil
HDFS-11224	Lifeline message should be ignored for dead nodes	Critical	.	Vinayakumar B	Vinayakumar B
HADOOP-13824	FsShell can suppress the real error if no error message is present	Major	fs	Rob Vesse	John Zhuge
MAPREDUCE-6820	Fix dead links in Job relevant classes	Minor	documentation	Yiqun Lin	Yiqun Lin
HDFS-8870	Lease is leaked on write failure	Major	hdfs-client	Rushabh S Shah	Kuhu Shukla
HADOOP-13565	KerberosAuthenticationHandler#authenticate should not rebuild SPN based on client request	Major	security	Xiaoyu Yao	Xiaoyu Yao
HDFS-11229	HDFS-11056 failed to close meta file	Blocker	datanode	Wei-Chiu Chuang	Wei-Chiu Chuang
HDFS-10570	Remove classpath conflicts of netty-all jar in hadoop-hdfs-client	Minor	test	Vinayakumar B	Vinayakumar B
HDFS-10684	WebHDFS DataNode calls fail without parameter createparent	Blocker	webhdfs	Samuel Low	John Zhuge
HDFS-11204	Document the missing options of hdfs zkfc command	Minor	documentation	Yiqun Lin	Yiqun Lin
HADOOP-13890	Maintain HTTP/host as SPNEGO SPN support and fix KerberosName parsing	Major	test	Brahma Reddy Battula	Xiaoyu Yao
HDFS-11094	Send back HAState along with NamespaceInfo during a versionRequest as an optional parameter	Major	datanode	Eric Badger	Eric Badger
HDFS-11160	VolumeScanner reports write-in-progress replicas as corrupt incorrectly	Major	datanode	Wei-Chiu Chuang	Wei-Chiu Chuang
HDFS-11263	ClassCastException when we use Bzipcodec for Fsimage compression	Critical	.	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-11195	Return error when appending files by webhdfs rest api fails	Major	.	Yuanbo Liu	Yuanbo Liu
HDFS-11261	Document missing NameNode metrics	Minor	documentation	Yiqun Lin	Yiqun Lin
HDFS-11258	File mtime change could not save to editlog	Critical	.	Jimmy Xiang	Jimmy Xiang
HDFS-11271	Typo in NameNode UI	Trivial	namenode, ui	Wei-Chiu Chuang	Wei-Chiu Chuang
HDFS-11250	Fix a typo in ReplicaUnderRecovery#setRecoveryID	Trivial	.	Yiqun Lin	Yiqun Lin
HDFS-11270	Document the missing options of NameNode bootstrap command	Minor	documentation	Yiqun Lin	Yiqun Lin
HDFS-11252	TestFileTruncate#testTruncateWithDataNodesRestartImmediately can fail with BindException	Major	.	Jason Lowe	Yiqun Lin
YARN-6024	Capacity Scheduler ‘continuous reservation looking’ doesn‘t work when sum of queue’s used and reserved resources is equal to max	Major	.	Wangda Tan	Wangda Tan
HADOOP-13883	Add description of -fs option in generic command usage	Minor	documentation	Yiqun Lin	Yiqun Lin
YARN-6029	CapacityScheduler deadlock when ParentQueue#getQueueUserAclInfo is called by one thread and LeafQueue#assignContainers is releasing excessive reserved container by another thread	Critical	capacityscheduler	Tao Yang	Tao Yang
HADOOP-12733	Remove references to obsolete io.seqfile configuration variables	Minor	.	Ray Chiang	Ray Chiang
HDFS-11280	Allow WebHDFS to reuse HTTP connections to NN	Major	hdfs	Zheng Shao	Zheng Shao
MAPREDUCE-6711	JobImpl fails to handle preemption events on state COMMITTING	Major	.	Li Lu	Prabhu Joseph
HADOOP-13958	Bump up release year to 2017	Blocker	.	Junping Du	Junping Du
YARN-6068	Log aggregation get failed when NM restart even with recovery	Blocker	.	Junping Du	Junping Du
YARN-4148	When killing app, RM releases app's resource before they are released by NM	Major	resourcemanager	Jun Gong	Jason Lowe
HDFS-11312	Fix incompatible tag number change for nonDfsUsed in DatanodeInfoProto	Blocker	.	Sean Mackrory	Sean Mackrory
YARN-6072	RM unable to start in secure mode	Blocker	resourcemanager	Bibin A Chundatt	Ajith S
HDFS-10733	NameNode terminated after full GC thinking QJM is unresponsive.	Major	namenode, qjm	Konstantin Shvachko	Vinitha Reddy Gankidi
HADOOP-14001	Improve delegation token validity checking	Major	.	Akira Ajisaka	Akira Ajisaka
HDFS-11376	Revert HDFS-8377 Support HTTP/2 in datanode	Major	datanode	Andrew Wang	Xiao Chen
YARN-6151	FS preemption does not consider child queues over fairshare if the parent is under	Major	fairscheduler	Yufei Gu	Yufei Gu
YARN-5271	ATS client doesn't work with Jersey 2 on the classpath	Major	client, timelineserver	Steve Loughran	Weiwei Yang
YARN-3933	FairScheduler: Multiple calls to completedContainer are not safe	Major	fairscheduler	Lavkesh Lahngir	Shiwei Guo
YARN-6177	Yarn client should exit with an informative error message if an incompatible Jersey library is used at client	Major	.	Weiwei Yang	Weiwei Yang
HDFS-11379	DFSInputStream may infinite loop requesting block locations	Critical	hdfs-client	Daryn Sharp	Daryn Sharp
HADOOP-14092	Typo in hadoop-aws index.md	Trivial	fs/s3	John Zhuge	John Zhuge
HADOOP-13826	S3A Deadlock in multipart copy due to thread pool limits.	Critical	fs/s3	Sean Mackrory	Sean Mackrory
HADOOP-14017	User friendly name for ADLS user and group	Major	fs/adl	John Zhuge	Vishwajeet Dusane
YARN-6175	FairScheduler: Negative vcore for resource needed to preempt	Major	fairscheduler	Yufei Gu	Yufei Gu
HADOOP-14028	S3A BlockOutputStreams doesn't delete temporary files in multipart uploads or handle part upload failures	Critical	fs/s3	Seth Fitzsimmons	Steve Loughran
YARN-1728	Workaround guice3x-undecoded pathInfo in YARN WebApp	Major	.	Abraham Elmahrek	Yuanbo Liu
HADOOP-12979	IOE in S3a: ${hadoop.tmp.dir}/s3a not configured	Major	.	Steve Loughran	Steve Loughran
YARN-6270	WebUtils.getRMWebAppURLWithScheme() needs to honor RM HA setting	Major	.	Sumana Sathish	Xuan Gong
HDFS-11498	Make RestCsrfPreventionHandler and WebHdfsHandler compatible with Netty 4.0	Major	.	Andrew Wang	Andrew Wang
HADOOP-14087	S3A typo in pom.xml test exclusions	Major	fs/s3	Aaron Fabbri	Aaron Fabbri
HADOOP-14062	ApplicationMasterProtocolPBClientImpl.allocate fails with EOFException when RPC privacy is enabled	Critical	.	Steven Rand	Steven Rand
HDFS-11431	hadoop-hdfs-client JAR does not include ConfiguredFailoverProxyProvider	Blocker	build, hdfs-client	Steven Rand	Steven Rand

TESTS:

JIRA	Summary	Priority	Component	Reporter	Contributor
MAPREDUCE-6191	TestJavaSerialization fails with getting incorrect MR job result	Minor	test	sam liu	sam liu
YARN-3339	TestDockerContainerExecutor should pull a single image and not the entire centos repository	Minor	test	Ravindra Kumar Naik	Ravindra Kumar Naik
YARN-1880	Cleanup TestApplicationClientProtocolOnHA	Trivial	test	Tsuyoshi Ozawa	Tsuyoshi Ozawa
HDFS-6263	Remove DRFA.MaxBackupIndex config from log4j.properties	Minor	.	Akira Ajisaka	Abhiraj Butala
HDFS-6408	Remove redundant definitions in log4j.properties	Minor	test	Abhiraj Butala	Abhiraj Butala
YARN-2666	TestFairScheduler.testContinuousScheduling fails Intermittently	Major	scheduler	Tsuyoshi Ozawa	zhihai xu
HDFS-8247	TestDiskspaceQuotaUpdate#testAppendOverTypeQuota is failing	Major	test	Anu Engineer	Xiaoyu Yao
HADOOP-11881	test-patch.sh javac result is wildly wrong	Major	build, test	Allen Wittenauer	Kengo Seki
HADOOP-11904	test-patch.sh goes into an infinite loop on non-maven builds	Critical	test	Allen Wittenauer	Allen Wittenauer
YARN-3343	TestCapacitySchedulerNodeLabelUpdate.testNodeUpdate sometime fails in trunk	Minor	.	Xuan Gong	Rohith Sharma K S
YARN-3580	[JDK 8] TestClientRMService.testGetLabelsToNodes fails	Major	test	Robert Kanter	Robert Kanter
HDFS-7559	Create unit test to automatically compare HDFS related classes and hdfs-default.xml	Minor	.	Ray Chiang	Ray Chiang
HADOOP-11906	test-patch.sh should use ‘file’ command for patch determinism	Major	.	Allen Wittenauer	Sean Busbey
YARN-3602	TestResourceLocalizationService.testPublicResourceInitializesLocalDir fails Intermittently due to IOException from cleanup	Minor	test	zhihai xu	zhihai xu
HDFS-8243	Files written by TestHostsFiles and TestNameNodeMXBean are causing Release Audit Warnings.	Minor	test	Ruth Wisniewski	Ruth Wisniewski
HADOOP-11884	test-patch.sh should pull the real findbugs version	Minor	test	Allen Wittenauer	Kengo Seki
HADOOP-11944	add option to test-patch to avoid relocating patch process directory	Minor	.	Sean Busbey	Sean Busbey
HADOOP-11949	Add user-provided plugins to test-patch	Major	.	Sean Busbey	Sean Busbey
HADOOP-12000	cannot use --java-home in test-patch	Major	scripts	Allen Wittenauer	Allen Wittenauer
MAPREDUCE-6204	TestJobCounters should use new properties instead of JobConf.MAPRED_TASK_JAVA_OPTS	Minor	test	sam liu	sam liu
HADOOP-12035	shellcheck plugin displays a wrong version potentially	Trivial	build	Kengo Seki	Kengo Seki
HADOOP-12030	test-patch should only report on newly introduced findbugs warnings.	Major	.	Sean Busbey	Sean Busbey
HADOOP-11930	test-patch in offline mode should tell maven to be in offline mode	Major	.	Sean Busbey	Sean Busbey
HADOOP-11965	determine-flaky-tests needs a summary mode	Minor	.	Allen Wittenauer	Yufei Gu
HDFS-8645	Resolve inconsistent code in TestReplicationPolicy between trunk and branch-2	Major	namenode	Zhe Zhang	Zhe Zhang
YARN-2871	TestRMRestart#testRMRestartGetApplicationList sometime fails in trunk	Minor	.	Ted Yu	zhihai xu
YARN-3956	Fix TestNodeManagerHardwareUtils fails on Mac	Minor	nodemanager	Varun Vasudev	Varun Vasudev
HDFS-8834	TestReplication#testReplicationWhenBlockCorruption is not valid after HDFS-6482	Minor	datanode	Lei (Eddy) Xu	Lei (Eddy) Xu
YARN-3992	TestApplicationPriority.testApplicationPriorityAllocation fails intermittently	Major	.	Zhijie Shen	Sunil G
HDFS-2070	Add more unit tests for FsShell getmerge	Major	test	XieXianshan	Daniel Templeton
MAPREDUCE-5045	UtilTest#isCygwin method appears to be unused	Trivial	contrib/streaming, test	Chris Nauroth	Neelesh Srinivas Salian
YARN-3573	MiniMRYarnCluster constructor that starts the timeline server using a boolean should be marked deprecated	Major	timelineserver	Mit Desai	Brahma Reddy Battula
HDFS-9295	Add a thorough test of the full KMS code path	Critical	security, test	Daniel Templeton	Daniel Templeton
HDFS-9339	Extend full test of KMS ACLs	Major	test	Daniel Templeton	Daniel Templeton
HDFS-9354	Fix TestBalancer#testBalancerWithZeroThreadsForMove on Windows	Major	test	Xiaoyu Yao	Xiaoyu Yao
HDFS-9410	Some tests should always reset sysout and syserr	Minor	test	Xiao Chen	Xiao Chen
HADOOP-12564	Upgrade JUnit3 TestCase to JUnit 4 in org.apache.hadoop.io package	Trivial	test	Dustin Cote	Dustin Cote
HDFS-9153	Pretty-format the output for DFSIO	Major	.	Kai Zheng	Kai Zheng
HDFS-9429	Tests in TestDFSAdminWithHA intermittently fail with EOFException	Major	test	Xiao Chen	Xiao Chen
HADOOP-10729	Add tests for PB RPC in case version mismatch of client and server	Major	ipc	Junping Du	Junping Du
HDFS-7553	fix the TestDFSUpgradeWithHA due to BindException	Major	test	Liang Xie	Xiao Chen
HDFS-9626	TestBlockReplacement#testBlockReplacement fails occasionally	Minor	test	Xiao Chen	Xiao Chen
HADOOP-12696	Add Tests for S3FileSystem Contract	Major	tools	Matthew Paduano	Matthew Paduano
MAPREDUCE-6614	Remove unnecessary code in TestMapreduceConfigFields	Minor	test	Akira Ajisaka	Kai Sasaki
HADOOP-12736	TestTimedOutTestsListener#testThreadDumpAndDeadlocks sometimes times out	Major	.	Xiao Chen	Xiao Chen
HADOOP-12715	TestValueQueue#testgetAtMostPolicyALL fails intermittently	Major	.	Xiao Chen	Xiao Chen
HDFS-9773	Remove dead code related to SimulatedFSDataset in tests	Minor	test	Akira Ajisaka	Brahma Reddy Battula
HDFS-9888	Allow reseting KerberosName in unit tests	Minor	.	Xiao Chen	Xiao Chen
YARN-4717	TestResourceLocalizationService.testPublicResourceInitializesLocalDir fails Intermittently due to IllegalArgumentException from cleanup	Minor	nodemanager	Daniel Templeton	Daniel Templeton
HDFS-9949	Add a test case to ensure that the DataNode does not regenerate its UUID when a storage directory is cleared	Minor	.	Harsh J	Harsh J
HADOOP-12738	Create unit test to automatically compare Common related classes and core-default.xml	Minor	.	Ray Chiang	Ray Chiang
HADOOP-12101	Add automatic search of default Configuration variables to TestConfigurationFieldsBase	Major	test	Ray Chiang	Ray Chiang
YARN-4947	Test timeout is happening for TestRMWebServicesNodes	Major	test	Bibin A Chundatt	Bibin A Chundatt
YARN-5069	TestFifoScheduler.testResourceOverCommit race condition	Major	test	Eric Badger	Eric Badger
YARN-5114	Add additional tests in TestRMWebServicesApps and rectify testInvalidAppAttempts failure in 2.8	Minor	.	Bibin A Chundatt	Bibin A Chundatt
HDFS-10375	Remove redundant TestMiniDFSCluster.testDualClusters	Trivial	test	John Zhuge	Jiayi Zhou
YARN-5023	TestAMRestart#testShouldNotCountFailureToMaxAttemptRetry random failure	Major	.	Bibin A Chundatt	sandflee
YARN-5318	TestRMAdminService#testRefreshNodesResourceWithFileSystemBasedConfigurationProvider fails intermittently.	Minor	.	sandflee	Jun Gong
YARN-5037	TestRMRestart#testQueueMetricsOnRMRestart random failure	Major	.	sandflee	sandflee
YARN-5317	testAMRestartNotLostContainerCompleteMsg may fail	Minor	.	sandflee	sandflee
YARN-5159	Wrong Javadoc tag in MiniYarnCluster	Major	documentation	Andras Bokor	Andras Bokor
MAPREDUCE-6738	TestJobListCache.testAddExisting failed intermittently in slow VM testbed	Minor	.	Junping Du	Junping Du
YARN-5092	TestRMDelegationTokens fails intermittently	Major	test	Rohith Sharma K S	Jason Lowe
HADOOP-10980	TestActiveStandbyElector fails occasionally in trunk	Minor	.	Ted Yu	Eric Badger
HADOOP-13395	Enhance TestKMSAudit	Minor	kms	Xiao Chen	Xiao Chen
YARN-5492	TestSubmitApplicationWithRMHA is failing sporadically during precommit builds	Major	test	Jason Lowe	Vrushali C
YARN-5544	TestNodeBlacklistingOnAMFailures fails on trunk	Major	test	Varun Saxena	Sunil G
HDFS-9745	TestSecureNNWithQJM#testSecureMode sometimes fails with timeouts	Minor	.	Xiao Chen	Xiao Chen
YARN-5389	TestYarnClient#testReservationDelete fails	Major	.	Rohith Sharma K S	Sean Po
YARN-5560	Clean up bad exception catching practices in TestYarnClient	Major	.	Sean Po	Sean Po
YARN-5608	TestAMRMClient.setup() fails with ArrayOutOfBoundsException	Major	test	Daniel Templeton	Daniel Templeton
HDFS-10657	testAclCLI.xml setfacl test should expect mask r-x	Minor	.	John Zhuge	John Zhuge
HDFS-9333	Some tests using MiniDFSCluster errored complaining port in use	Minor	test	Kai Zheng	Masatake Iwasaki
HADOOP-13686	Adding additional unit test for Trash (I)	Major	.	Xiaoyu Yao	Weiwei Yang
YARN-3568	TestAMRMTokens should use some random port	Major	test	Gera Shegalov	Takashi Ohnishi
MAPREDUCE-6804	Add timeout when starting JobHistoryServer in MiniMRYarnCluster	Minor	test	Andras Bokor	Andras Bokor
HDFS-11272	Refine the assert messages in TestFSDirAttrOp	Minor	test	Akira Ajisaka	Jimmy Xiang
HDFS-11278	Add missing @Test annotation for TestSafeMode.testSafeModeUtils()	Trivial	namenode	Lukas Majercak	Lukas Majercak

SUB-TASKS:

JIRA	Summary	Priority	Component	Reporter	Contributor
YARN-3356	Capacity Scheduler FiCaSchedulerApp should use ResourceUsage to track used-resources-by-label.	Major	capacityscheduler, resourcemanager	Wangda Tan	Wangda Tan
YARN-3345	Add non-exclusive node label API to RMAdmin protocol and NodeLabelsManager	Major	api, client, resourcemanager	Wangda Tan	Wangda Tan
HDFS-7854	Separate class DataStreamer out of DFSOutputStream	Major	hdfs-client	Li Bo	Li Bo
HDFS-7713	Implement mkdirs in the HDFS Web UI	Major	ui	Ravi Prakash	Ravi Prakash
YARN-2495	Allow admin specify labels from each NM (Distributed configuration)	Major	resourcemanager	Wangda Tan	Naganarasimha G R
HDFS-7893	Update the POM to create a separate hdfs-client jar	Major	build	Haohui Mai	Haohui Mai
YARN-3365	Add support for using the ‘tc’ tool via container-executor	Major	nodemanager	Sidharta Seethana	Sidharta Seethana
HDFS-8034	Fix TestDFSClientRetries#testDFSClientConfigurationLocateFollowingBlockInitialDelay for Windows	Minor	test	Xiaoyu Yao	Xiaoyu Yao
YARN-3110	Few issues in ApplicationHistory web ui	Minor	applications, timelineserver	Bibin A Chundatt	Naganarasimha G R
HDFS-8049	Annotation client implementation as private	Major	hdfs-client	Tsz Wo Nicholas Sze	Takuya Fukudome
HDFS-8079	Separate the client retry conf from DFSConfigKeys	Major	hdfs-client	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HDFS-8080	Separate JSON related routines used by WebHdfsFileSystem to a package local class	Minor	hdfs-client	Haohui Mai	Haohui Mai
HDFS-8085	Move CorruptFileBlockIterator to the hdfs.client.impl package	Minor	hdfs-client	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HDFS-8089	Move o.a.h.hdfs.web.resources.* to the client jars	Minor	build	Haohui Mai	Haohui Mai
HDFS-8102	Separate webhdfs retry configuration keys from DFSConfigKeys	Minor	hdfs-client	Haohui Mai	Haohui Mai
YARN-1376	NM need to notify the log aggregation status to RM through Node heartbeat	Major	.	Xuan Gong	Xuan Gong
HDFS-8100	Refactor DFSClient.Conf to a standalone class	Minor	hdfs-client	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HDFS-8103	Move BlockTokenSecretManager.AccessMode into BlockTokenIdentifier	Minor	security	Haohui Mai	Haohui Mai
HDFS-8084	Separate the client failover conf from DFSConfigKeys	Major	hdfs-client	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HDFS-8083	Separate the client write conf from DFSConfigKeys	Major	hdfs-client	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
YARN-3347	Improve YARN log command to get AMContainer logs as well as running containers logs	Major	log-aggregation	Xuan Gong	Xuan Gong
YARN-3443	Create a ‘ResourceHandler’ subsystem to ease addition of support for new resource types on the NM	Major	nodemanager	Sidharta Seethana	Sidharta Seethana
HDFS-7701	Support reporting per storage type quota and usage with hadoop/hdfs shell	Major	datanode, namenode	Xiaoyu Yao	Peter Shi
YARN-3361	CapacityScheduler side changes to support non-exclusive node labels	Major	capacityscheduler	Wangda Tan	Wangda Tan
YARN-3318	Create Initial OrderingPolicy Framework and FifoOrderingPolicy	Major	scheduler	Craig Welch	Craig Welch
YARN-3326	Support RESTful API for getLabelsToNodes	Minor	resourcemanager	Naganarasimha G R	Naganarasimha G R
YARN-3354	Container should contains node-labels asked by original ResourceRequests	Major	api, capacityscheduler, nodemanager, resourcemanager	Wangda Tan	Wangda Tan
HDFS-8082	Separate the client read conf from DFSConfigKeys	Major	hdfs-client	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HDFS-8165	Move GRANDFATHER_GENERATION_STAMP and GRANDFATER_INODE_ID to hdfs-client	Major	build	Haohui Mai	Haohui Mai
YARN-1402	Related Web UI, CLI changes on exposing client API to check log aggregation status	Major	.	Xuan Gong	Xuan Gong
YARN-2696	Queue sorting in CapacityScheduler should consider node label	Major	capacityscheduler, resourcemanager	Wangda Tan	Wangda Tan
YARN-3487	CapacityScheduler scheduler lock obtained unnecessarily when calling getQueue	Critical	capacityscheduler	Jason Lowe	Jason Lowe
YARN-3136	getTransferredContainers can be a bottleneck during AM registration	Major	scheduler	Jason Lowe	Sunil G
HDFS-8169	Move LocatedBlocks and related classes to hdfs-client	Major	build, hdfs-client	Haohui Mai	Haohui Mai
YARN-3463	Integrate OrderingPolicy Framework with CapacityScheduler	Major	capacityscheduler	Craig Welch	Craig Welch
HDFS-8185	Separate client related routines in HAUtil into a new class	Major	build, hdfs-client	Haohui Mai	Haohui Mai
YARN-3225	New parameter or CLI for decommissioning node gracefully in RMAdmin CLI	Major	graceful	Junping Du	Devaraj K
HDFS-8218	Move classes that used by ClientProtocol into hdfs-client	Major	build	Haohui Mai	Haohui Mai
YARN-3366	Outbound network bandwidth : classify/shape traffic originating from YARN containers	Major	.	Sidharta Seethana	Sidharta Seethana
YARN-2605	[RM HA] Rest api endpoints doing redirect incorrectly	Major	resourcemanager	bc Wong	Xuan Gong
YARN-3319	Implement a FairOrderingPolicy	Major	scheduler	Craig Welch	Craig Welch
YARN-3413	Node label attributes (like exclusivity) should settable via addToClusterNodeLabels but shouldn't be changeable at runtime	Major	api, client, resourcemanager	Wangda Tan	Wangda Tan
YARN-2498	Respect labels in preemption policy of capacity scheduler for inter-queue preemption	Major	resourcemanager	Wangda Tan	Wangda Tan
YARN-2740	Fix NodeLabelsManager to properly handle node label modifications when distributed node label configuration enabled	Major	resourcemanager	Wangda Tan	Naganarasimha G R
YARN-3544	AM logs link missing in the RM UI for a completed app	Blocker	.	Hitesh Shah	Xuan Gong
YARN-2619	NodeManager: Add cgroups support for disk I/O isolation	Major	.	Wei Yan	Varun Vasudev
HDFS-8086	Move LeaseRenewer to the hdfs.client.impl package	Minor	hdfs-client	Tsz Wo Nicholas Sze	Takanobu Asanuma
YARN-3006	Improve the error message when attempting manual failover with auto-failover enabled	Minor	.	Akira Ajisaka	Akira Ajisaka
HDFS-8249	Separate HdfsConstants into the client and the server side class	Major	hdfs-client	Haohui Mai	Haohui Mai
HDFS-8309	Skip unit test using DataNodeTestUtils#injectDataDirFailure() on Windows	Minor	test	Xiaoyu Yao	Xiaoyu Yao
HDFS-8237	Move all protocol classes used by ClientProtocol to hdfs-client	Major	build	Haohui Mai	Haohui Mai
HDFS-8314	Move HdfsServerConstants#IO_FILE_BUFFER_SIZE and SMALL_BUFFER_SIZE to the users	Major	.	Haohui Mai	Li Lu
HDFS-8310	Fix TestCLI.testAll ‘help: help for find’ on Windows	Minor	test	Xiaoyu Yao	Kiran Kumar M R
YARN-3301	Fix the format issue of the new RM web UI and AHS web UI after YARN-3272 / YARN-3262	Major	resourcemanager	Xuan Gong	Xuan Gong
YARN-3448	Add Rolling Time To Lives Level DB Plugin Capabilities	Major	timelineserver	Jonathan Eagles	Jonathan Eagles
YARN-2918	Don‘t fail RM if queue’s configured labels are not existed in cluster-node-labels	Major	resourcemanager	Rohith Sharma K S	Wangda Tan
YARN-644	Basic null check is not performed on passed in arguments before using them in ContainerManagerImpl.startContainer	Minor	nodemanager	Omkar Vinit Joshi	Varun Saxena
YARN-3593	Add label-type and Improve “DEFAULT_PARTITION” in Node Labels Page	Major	webapp	Naganarasimha G R	Naganarasimha G R
YARN-2331	Distinguish shutdown during supervision vs. shutdown for rolling upgrade	Major	nodemanager	Jason Lowe	Jason Lowe
YARN-3579	CommonNodeLabelsManager should support NodeLabel instead of string label name when getting node-to-label/label-to-label mappings	Minor	resourcemanager	Sunil G	Sunil G
YARN-3505	Node's Log Aggregation Report with SUCCEED should not cached in RMApps	Critical	log-aggregation	Junping Du	Xuan Gong
HDFS-8403	Eliminate retries in TestFileCreation#testOverwriteOpenForWrite	Major	test	Arpit Agarwal	Arpit Agarwal
HDFS-8157	Writes to RAM DISK reserve locked memory for block files	Major	datanode	Arpit Agarwal	Arpit Agarwal
YARN-3541	Add version info on timeline service / generic history web UI and REST API	Major	timelineserver	Zhijie Shen	Zhijie Shen
YARN-3565	NodeHeartbeatRequest/RegisterNodeManagerRequest should use NodeLabel object instead of String	Blocker	api, client, resourcemanager	Wangda Tan	Naganarasimha G R
YARN-3583	Support of NodeLabel object instead of plain String in YarnClient side.	Major	client	Sunil G	Sunil G
YARN-3609	Move load labels from storage from serviceInit to serviceStart to make it works with RM HA case.	Major	resourcemanager	Wangda Tan	Wangda Tan
YARN-3684	Change ContainerExecutor's primary lifecycle methods to use a more extensible mechanism for passing information.	Major	yarn	Sidharta Seethana	Sidharta Seethana
HDFS-8454	Remove unnecessary throttling in TestDatanodeDeath	Major	test	Arpit Agarwal	Arpit Agarwal
YARN-3632	Ordering policy should be allowed to reorder an application when demand changes	Major	capacityscheduler	Craig Welch	Craig Welch
YARN-3686	CapacityScheduler should trim default_node_label_expression	Critical	api, client, resourcemanager	Wangda Tan	Sunil G
YARN-3647	RMWebServices api's should use updated api from CommonNodeLabelsManager to get NodeLabel object	Major	resourcemanager	Sunil G	Sunil G
YARN-3581	Deprecate -directlyAccessNodeLabelStore in RMAdminCLI	Major	api, client, resourcemanager	Wangda Tan	Naganarasimha G R
HDFS-8482	Rename BlockInfoContiguous to BlockInfo	Major	.	Zhe Zhang	Zhe Zhang
YARN-3700	ATS Web Performance issue at load time when large number of jobs	Major	resourcemanager, webapp, yarn	Xuan Gong	Xuan Gong
YARN-3716	Node-label-expression should be included by ResourceRequestPBImpl.toString	Minor	api	Xianyin Xin	Xianyin Xin
YARN-3740	Fixed the typo with the configuration name: APPLICATION_HISTORY_PREFIX_MAX_APPS	Major	resourcemanager, webapp, yarn	Xuan Gong	Xuan Gong
YARN-2900	Application (Attempt and Container) Not Found in AHS results in Internal Server Error (500)	Major	timelineserver	Jonathan Eagles	Mit Desai
HDFS-8489	Subclass BlockInfo to represent contiguous blocks	Major	namenode	Zhe Zhang	Zhe Zhang
YARN-2392	add more diags about app retry limits on AM failures	Minor	resourcemanager	Steve Loughran	Steve Loughran
YARN-3766	ATS Web UI breaks because of YARN-3467	Blocker	resourcemanager, webapp, yarn	Xuan Gong	Xuan Gong
YARN-1462	AHS API and other AHS changes to handle tags for completed MR jobs	Major	.	Karthik Kambatla	Xuan Gong
YARN-3787	loading applications by filtering appstartedTime period for ATS Web UI	Major	resourcemanager, webapp, yarn	Xuan Gong	Xuan Gong
HDFS-7923	The DataNodes should rate-limit their full block reports by asking the NN on heartbeat messages	Major	.	Colin P. McCabe	Colin P. McCabe
HDFS-8540	Mover should exit with NO_MOVE_BLOCK if no block can be moved	Major	balancer & mover	Tsz Wo Nicholas Sze	Surendra Singh Lilhore
YARN-3711	Documentation of ResourceManager HA should explain configurations about listen addresses	Minor	documentation	Masatake Iwasaki	Masatake Iwasaki
HDFS-8597	Fix TestFSImage#testZeroBlockSize on Windows	Major	datanode, test	Xiaoyu Yao	Xiaoyu Yao
HDFS-7164	Feature documentation for HDFS-6581	Major	documentation	Arpit Agarwal	Arpit Agarwal
HDFS-8238	Move ClientProtocol to the hdfs-client	Major	build	Haohui Mai	Takanobu Asanuma
HDFS-6249	Output AclEntry in PBImageXmlWriter	Minor	tools	Akira Ajisaka	Surendra Singh Lilhore
YARN-3521	Support return structured NodeLabel objects in REST API	Major	api, client, resourcemanager	Wangda Tan	Sunil G
HDFS-8192	Eviction should key off used locked memory instead of ram disk free space	Major	datanode	Arpit Agarwal	Arpit Agarwal
HDFS-8651	Make hadoop-hdfs-project Native code -Wall-clean	Major	native	Alan Burlison	Alan Burlison
HADOOP-12036	Consolidate all of the cmake extensions in one directory	Major	.	Allen Wittenauer	Alan Burlison
HDFS-7390	Provide JMX metrics per storage type	Major	.	Benoy Antony	Benoy Antony
HADOOP-12104	Migrate Hadoop Pipes native build to new CMake framework	Major	build	Alan Burlison	Alan Burlison
HADOOP-12112	Make hadoop-common-project Native code -Wall-clean	Major	native	Alan Burlison	Alan Burlison
HDFS-8493	Consolidate truncate() related implementation in a single class	Major	.	Haohui Mai	Rakesh R
HDFS-8635	Migrate HDFS native build to new CMake framework	Major	build	Alan Burlison	Alan Burlison
YARN-3827	Migrate YARN native build to new CMake framework	Major	build	Alan Burlison	Alan Burlison
MAPREDUCE-6376	Add avro binary support for jhist files	Major	jobhistoryserver	Ray Chiang	Ray Chiang
HDFS-8620	Clean up the checkstyle warinings about ClientProtocol	Major	.	Takanobu Asanuma	Takanobu Asanuma
HDFS-8726	Move protobuf files that define the client-sever protocols to hdfs-client	Major	build	Haohui Mai	Haohui Mai
YARN-1012	Report NM aggregated container resource utilization in heartbeat	Major	nodemanager	Arun C Murthy	Inigo Goiri
YARN-3800	Reduce storage footprint for ReservationAllocation	Major	capacityscheduler, fairscheduler, resourcemanager	Anubhav Dhoot	Anubhav Dhoot
YARN-3445	Cache runningApps in RMNode for getting running apps on given NodeId	Major	nodemanager, resourcemanager	Junping Du	Junping Du
YARN-3116	[Collector wireup] We need an assured way to determine if a container is an AM container on NM	Major	nodemanager, timelineserver	Zhijie Shen	Giovanni Matteo Fumarola
HDFS-8541	Mover should exit with NO_MOVE_PROGRESS if there is no move progress	Minor	balancer & mover	Tsz Wo Nicholas Sze	Surendra Singh Lilhore
HDFS-8742	Inotify: Support event for OP_TRUNCATE	Major	namenode	Surendra Singh Lilhore	Surendra Singh Lilhore
YARN-1449	AM-NM protocol changes to support container resizing	Major	api	Wangda Tan (No longer used)	MENG DING
HADOOP-11974	Fix FIONREAD #include on Solaris	Minor	net	Alan Burlison	Alan Burlison
YARN-3930	FileSystemNodeLabelsStore should make sure edit log file closed when exception is thrown	Major	api, client, resourcemanager	Dian Fu	Dian Fu
YARN-3844	Make hadoop-yarn-project Native code -Wall-clean	Major	build	Alan Burlison	Alan Burlison
HDFS-8794	Improve CorruptReplicasMap#corruptReplicasMap	Major	.	Yi Liu	Yi Liu
HDFS-7483	Display information per tier on the Namenode UI	Major	.	Benoy Antony	Benoy Antony
YARN-2003	Support for Application priority : Changes in RM and Capacity Scheduler	Major	resourcemanager	Sunil G	Sunil G
HDFS-8721	Add a metric for number of encryption zones	Major	encryption	Rakesh R	Rakesh R
YARN-1645	ContainerManager implementation to support container resizing	Major	nodemanager	Wangda Tan	MENG DING
HDFS-8495	Consolidate append() related implementation into a single class	Major	namenode	Rakesh R	Rakesh R
HDFS-8795	Improve InvalidateBlocks#node2blocks	Major	.	Yi Liu	Yi Liu
HADOOP-12184	Remove unused Linux-specific constants in NativeIO	Major	native	Martin Walsh	Martin Walsh
HDFS-8730	Clean up the import statements in ClientProtocol	Minor	.	Takanobu Asanuma	Takanobu Asanuma
YARN-3969	Allow jobs to be submitted to reservation that is active but does not have any allocations	Major	capacityscheduler, fairscheduler, resourcemanager	Subru Krishnan	Subru Krishnan
HADOOP-12170	hadoop-common's JNIFlags.cmake is redundant and can be removed	Minor	native	Alan Burlison	Alan Burlison
YARN-3656	LowCost: A Cost-Based Placement Agent for YARN Reservations	Major	capacityscheduler, resourcemanager	Ishai Menache	Jonathan Yaniv
YARN-3852	Add docker container support to container-executor	Major	yarn	Sidharta Seethana	Abin Shahab
YARN-3853	Add docker container runtime support to LinuxContainterExecutor	Major	yarn	Sidharta Seethana	Sidharta Seethana
YARN-3867	ContainerImpl changes to support container resizing	Major	nodemanager	MENG DING	MENG DING
HDFS-7192	DN should ignore lazyPersist hint if the writer is not local	Major	datanode	Arpit Agarwal	Arpit Agarwal
YARN-433	When RM is catching up with node updates then it should not expire acquired containers	Major	resourcemanager	Bikas Saha	Xuan Gong
MAPREDUCE-6394	Speed up Task processing loop in HsTasksBlock#render()	Major	jobhistoryserver	Ray Chiang	Ray Chiang
HADOOP-7824	NativeIO.java flags and identifiers must be set correctly for each platform, not hardcoded to their Linux values	Major	native	Dmytro Shteflyuk	Martin Walsh
YARN-3543	ApplicationReport should be able to tell whether the Application is AM managed or not.	Major	api	Spandan Dutta	Rohith Sharma K S
YARN-4004	container-executor should print output of docker logs if the docker container exits with non-0 exit status	Major	nodemanager	Varun Vasudev	Varun Vasudev
YARN-3736	Add RMStateStore apis to store and load accepted reservations for failover	Major	capacityscheduler, fairscheduler, resourcemanager	Subru Krishnan	Anubhav Dhoot
YARN-1643	Make ContainersMonitor can support change monitoring size of an allocated container in NM side	Major	nodemanager	Wangda Tan	MENG DING
YARN-3974	Refactor the reservation system test cases to use parameterized base test	Major	capacityscheduler, fairscheduler	Subru Krishnan	Subru Krishnan
YARN-3948	Display Application Priority in RM Web UI	Major	webapp	Sunil G	Sunil G
YARN-3873	pendingApplications in LeafQueue should also use OrderingPolicy	Major	capacityscheduler	Sunil G	Sunil G
YARN-3887	Support for changing Application priority during runtime	Major	capacityscheduler, resourcemanager	Sunil G	Sunil G
HDFS-8805	Archival Storage: getStoragePolicy should not need superuser privilege	Major	balancer & mover, namenode	Hui Zheng	Brahma Reddy Battula
HDFS-8052	Move WebHdfsFileSystem into hadoop-hdfs-client	Major	build	Haohui Mai	Haohui Mai
YARN-4023	Publish Application Priority to TimelineServer	Major	timelineserver	Sunil G	Sunil G
HDFS-8824	Do not use small blocks for balancing the cluster	Major	balancer & mover	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
YARN-3534	Collect memory/cpu usage on the node	Major	nodemanager, resourcemanager	Inigo Goiri	Inigo Goiri
HDFS-8801	Convert BlockInfoUnderConstruction as a feature	Major	namenode	Zhe Zhang	Jing Zhao
HDFS-8792	BlockManager#postponedMisreplicatedBlocks should use a LightWeightHashSet to save memory	Major	.	Yi Liu	Yi Liu
HDFS-8862	BlockManager#excessReplicateMap should use a HashMap	Major	namenode	Yi Liu	Yi Liu
HDFS-8278	HDFS Balancer should consider remaining storage % when checking for under-utilized machines	Major	balancer & mover	Gopal V	Tsz Wo Nicholas Sze
HDFS-8826	Balancer may not move blocks efficiently in some cases	Major	balancer & mover	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HDFS-8803	Move DfsClientConf to hdfs-client	Major	build	Haohui Mai	Mingliang Liu
YARN-2923	Support configuration based NodeLabelsProvider Service in Distributed Node Label Configuration Setup	Major	nodemanager	Naganarasimha G R	Naganarasimha G R
YARN-1644	RM-NM protocol changes and NodeStatusUpdater implementation to support container resizing	Major	nodemanager	Wangda Tan	MENG DING
YARN-3868	ContainerManager recovery for container resizing	Major	nodemanager	MENG DING	MENG DING
HDFS-8823	Move replication factor into individual blocks	Major	.	Haohui Mai	Haohui Mai
YARN-221	NM should provide a way for AM to tell it not to aggregate logs.	Major	log-aggregation, nodemanager	Robert Joseph Evans	Ming Ma
HDFS-8934	Move ShortCircuitShm to hdfs-client	Major	build	Mingliang Liu	Mingliang Liu
HDFS-8948	Use GenericTestUtils to set log levels in TestPread and TestReplaceDatanodeOnFailure	Major	build	Mingliang Liu	Mingliang Liu
YARN-4014	Support user cli interface in for Application Priority	Major	client, resourcemanager	Rohith Sharma K S	Rohith Sharma K S
HDFS-8951	Move the shortcircuit package to hdfs-client	Major	build	Mingliang Liu	Mingliang Liu
HDFS-8248	Store INodeId instead of the INodeFile object in BlockInfoContiguous	Major	.	Haohui Mai	Haohui Mai
HDFS-8962	Clean up checkstyle warnings in o.a.h.hdfs.DfsClientConf	Major	build	Mingliang Liu	Mingliang Liu
YARN-3250	Support admin cli interface in for Application Priority	Major	resourcemanager	Sunil G	Rohith Sharma K S
HDFS-8925	Move BlockReaderLocal to hdfs-client	Major	build	Mingliang Liu	Mingliang Liu
HDFS-8980	Remove unnecessary block replacement in INodeFile	Major	namenode	Jing Zhao	Jing Zhao
HDFS-8990	Move RemoteBlockReader to hdfs-client module	Major	build	Mingliang Liu	Mingliang Liu
YARN-4092	RM HA UI redirection needs to be fixed when both RMs are in standby mode	Major	resourcemanager	Xuan Gong	Xuan Gong
YARN-4082	Container shouldn‘t be killed when node’s label updated.	Major	capacity scheduler	Wangda Tan	Wangda Tan
YARN-2801	Add documentation for node labels feature	Major	documentation	Gururaj Shetty	Wangda Tan
YARN-3893	Both RM in active state when Admin#transitionToActive failure from refeshAll()	Critical	resourcemanager	Bibin A Chundatt	Bibin A Chundatt
HDFS-8890	Allow admin to specify which blockpools the balancer should run on	Major	balancer & mover	Chris Trezzo	Chris Trezzo
YARN-4101	RM should print alert messages if Zookeeper and Resourcemanager gets connection issue	Critical	yarn	Yesha Vora	Xuan Gong
YARN-3970	REST api support for Application Priority	Major	webapp	Sunil G	Naganarasimha G R
HDFS-9002	Move o.a.h.hdfs.net/*Peer classes to hdfs-client	Major	build	Mingliang Liu	Mingliang Liu
HDFS-9012	Move o.a.h.hdfs.protocol.datatransfer.PipelineAck class to hadoop-hdfs-client module	Major	build	Mingliang Liu	Mingliang Liu
HDFS-8984	Move replication queues related methods in FSNamesystem to BlockManager	Major	.	Haohui Mai	Haohui Mai
YARN-2884	Proxying all AM-RM communications	Major	nodemanager, resourcemanager	Carlo Curino	Kishore Chaliparambil
YARN-4136	LinuxContainerExecutor loses info when forwarding ResourceHandlerException	Trivial	nodemanager	Steve Loughran	Bibin A Chundatt
HDFS-9041	Move entries in META-INF/services/o.a.h.fs.FileSystem to hdfs-client	Major	build	Haohui Mai	Mingliang Liu
HDFS-9010	Replace NameNode.DEFAULT_PORT with HdfsClientConfigKeys.DFS_NAMENODE_RPC_PORT_DEFAULT config key	Major	build	Mingliang Liu	Mingliang Liu
YARN-1651	CapacityScheduler side changes to support increase/decrease container resource.	Major	resourcemanager, scheduler	Wangda Tan	Wangda Tan
YARN-313	Add Admin API for supporting node resource configuration in command line	Critical	client, graceful	Junping Du	Inigo Goiri
HDFS-9008	Balancer#Parameters class could use a builder pattern	Minor	balancer & mover	Chris Trezzo	Chris Trezzo
YARN-3635	Get-queue-mapping should be a common interface of YarnScheduler	Major	scheduler	Wangda Tan	Tan, Wangda
YARN-3717	Expose app/am/queue's node-label-expression to RM web UI / CLI / REST-API	Major	.	Naganarasimha G R	Naganarasimha G R
HDFS-7986	Allow files / directories to be deleted from the NameNode UI	Major	ui	Ravi Prakash	Ravi Prakash
HDFS-7995	Implement chmod in the HDFS Web UI	Major	ui	Ravi Prakash	Ravi Prakash
YARN-4034	Render cluster Max Priority in scheduler metrics in RM web UI	Minor	resourcemanager, webapp	Rohith Sharma K S	Rohith Sharma K S
HDFS-9022	Move NameNode.getAddress() and NameNode.getUri() to hadoop-hdfs-client	Major	hdfs-client	Mingliang Liu	Mingliang Liu
YARN-4171	Resolve findbugs/javac warnings in YARN-1197 branch	Major	api, nodemanager, resourcemanager	Wangda Tan	Wangda Tan
YARN-3212	RMNode State Transition Update with DECOMMISSIONING state	Major	graceful, resourcemanager	Junping Du	Junping Du
HDFS-9101	Remove deprecated NameNode.getUri() static helper method	Major	.	Mingliang Liu	Mingliang Liu
HDFS-9004	Add upgrade domain to DatanodeInfo	Major	.	Ming Ma	Ming Ma
HDFS-9111	Move hdfs-client protobuf convert methods from PBHelper to PBHelperClient	Major	.	Mingliang Liu	Mingliang Liu
HDFS-9039	Separate client and server side methods of o.a.h.hdfs.NameNodeProxies	Major	.	Mingliang Liu	Mingliang Liu
HDFS-8733	Keep server related definition in hdfs.proto on server side	Major	.	Yi Liu	Mingliang Liu
HDFS-9131	Move config keys used by hdfs-client to HdfsClientConfigKeys	Major	.	Mingliang Liu	Mingliang Liu
HDFS-7529	Consolidate encryption zone related implementation into a single class	Major	.	Haohui Mai	Rakesh R
HDFS-9134	Move LEASE_{SOFTLIMIT,HARDLIMIT}_PERIOD constants from HdfsServerConstants to HdfsConstants	Major	.	Mingliang Liu	Mingliang Liu
HADOOP-11918	Listing an empty s3a root directory throws FileNotFound.	Minor	fs/s3	Lei (Eddy) Xu	Lei (Eddy) Xu
HDFS-8053	Move DFSIn/OutputStream and related classes to hadoop-hdfs-client	Major	build	Haohui Mai	Mingliang Liu
HDFS-8740	Move DistributedFileSystem to hadoop-hdfs-client	Major	build	Yi Liu	Mingliang Liu
YARN-4141	Runtime Application Priority change should not throw exception for applications at finishing states	Major	resourcemanager	Sunil G	Sunil G
HDFS-9165	Move entries in META-INF/services/o.a.h.fs.FileSystem to hdfs-client	Major	build	Haohui Mai	Mingliang Liu
HDFS-9166	Move hftp / hsftp filesystem to hfds-client	Major	build	Haohui Mai	Mingliang Liu
HDFS-8971	Remove guards when calling LOG.debug() and LOG.trace() in client package	Major	build	Mingliang Liu	Mingliang Liu
HDFS-9015	Refactor TestReplicationPolicy to test different block placement policies	Major	.	Ming Ma	Ming Ma
YARN-1897	CLI and core support for signal container functionality	Major	api	Ming Ma	Ming Ma
HDFS-9158	[OEV-Doc] : Document does not mention about “-f” and “-r” options	Major	.	nijel	nijel
HDFS-9155	OEV should treat .XML files as XML even when the file name extension is uppercase	Major	.	nijel	nijel
YARN-4215	RMNodeLabels Manager Need to verify and replace node labels for the only modified Node Label Mappings in the request	Major	resourcemanager	Naganarasimha G R	Naganarasimha G R
HDFS-9170	Move libhdfs / fuse-dfs / libwebhdfs to hdfs-client	Major	.	Haohui Mai	Haohui Mai
HDFS-9159	[OIV] : return value of the command is not correct if invalid value specified in “-p (processor)” option	Major	.	nijel	nijel
YARN-4140	RM container allocation delayed incase of app submitted to Nodelabel partition	Major	scheduler	Bibin A Chundatt	Bibin A Chundatt
YARN-3964	Support NodeLabelsProvider at Resource Manager side	Major	.	Dian Fu	Dian Fu
YARN-4230	Increasing container resource while there is no headroom left will cause ResourceManager to crash	Critical	resourcemanager	MENG DING	MENG DING
HDFS-9006	Provide BlockPlacementPolicy that supports upgrade domain	Major	.	Ming Ma	Ming Ma
HDFS-9160	[OIV-Doc] : Missing details of “delimited” for processor options	Major	.	nijel	nijel
HDFS-9167	Update pom.xml in other modules to depend on hdfs-client instead of hdfs	Major	build	Haohui Mai	Mingliang Liu
YARN-4255	container-executor does not clean up docker operation command files.	Minor	.	Sidharta Seethana	Sidharta Seethana
HDFS-9223	Code cleanup for DatanodeDescriptor and HeartbeatManager	Minor	namenode	Jing Zhao	Jing Zhao
YARN-4258	Add support for controlling capabilities for docker containers	Major	yarn	Sidharta Seethana	Sidharta Seethana
HDFS-9157	[OEV and OIV] : Unnecessary parsing for mandatory arguements if “-h” option is specified as the only option	Major	.	nijel	nijel
HADOOP-12475	Replace guava Cache with ConcurrentHashMap for caching Connection in ipc Client	Major	conf, io, ipc	Walter Su	Walter Su
YARN-4162	CapacityScheduler: Add resource usage by partition and queue capacity by partition to REST API	Major	api, client, resourcemanager	Naganarasimha G R	Naganarasimha G R
YARN-4170	AM need to be notified with priority in AllocateResponse	Major	resourcemanager	Sunil G	Sunil G
YARN-2556	Tool to measure the performance of the timeline server	Major	timelineserver	Jonathan Eagles	Chang Li
YARN-4262	Allow whitelisted users to run privileged docker containers.	Major	yarn	Sidharta Seethana	Sidharta Seethana
YARN-4267	Add additional logging to container launch implementations in container-executor	Major	yarn	Sidharta Seethana	Sidharta Seethana
YARN-3985	Make ReservationSystem persist state using RMStateStore reservation APIs	Major	resourcemanager	Anubhav Dhoot	Anubhav Dhoot
YARN-2513	Host framework UIs in YARN for use with the ATS	Major	timelineserver	Jonathan Eagles	Jonathan Eagles
YARN-3739	Add reservation system recovery to RM recovery process	Major	capacityscheduler, fairscheduler, resourcemanager	Subru Krishnan	Subru Krishnan
YARN-4243	Add retry on establishing Zookeeper conenction in EmbeddedElectorService#serviceInit	Major	resourcemanager	Xuan Gong	Xuan Gong
YARN-3738	Add support for recovery of reserved apps running under dynamic queues	Major	capacityscheduler, resourcemanager	Subru Krishnan	Subru Krishnan
YARN-3724	Use POSIX nftw(3) instead of fts(3)	Major	.	Malcolm Kavalsky	Alan Burlison
YARN-2729	Support script based NodeLabelsProvider Interface in Distributed Node Label Configuration Setup	Major	nodemanager	Naganarasimha G R	Naganarasimha G R
HDFS-9304	Add HdfsClientConfigKeys class to TestHdfsConfigFields#configurationClasses	Major	build	Mingliang Liu	Mingliang Liu
YARN-3216	Max-AM-Resource-Percentage should respect node labels	Critical	resourcemanager	Wangda Tan	Sunil G
HADOOP-12457	[JDK8] Fix a failure of compiling common by javadoc	Major	.	Tsuyoshi Ozawa	Akira Ajisaka
HDFS-9168	Move client side unit test to hadoop-hdfs-client	Major	build	Haohui Mai	Haohui Mai
HDFS-9343	Empty caller context considered invalid	Major	.	Mingliang Liu	Mingliang Liu
HDFS-9362	TestAuditLogger#testAuditLoggerWithCallContext assumes Unix line endings, fails on Windows.	Minor	test	Chris Nauroth	Chris Nauroth
HDFS-9007	Fix HDFS Balancer to honor upgrade domain policy	Major	.	Ming Ma	Ming Ma
HDFS-9379	Make NNThroughputBenchmark$BlockReportStats support more than 10 datanodes	Major	test	Mingliang Liu	Mingliang Liu
YARN-1510	Make NMClient support change container resources	Major	nodemanager	Wangda Tan (No longer used)	MENG DING
YARN-4345	yarn rmadmin -updateNodeResource doesn't work	Critical	graceful, resourcemanager	Sushmitha Sreenivasan	Junping Du
YARN-1509	Make AMRMClient support send increase container request and get increased/decreased containers	Major	resourcemanager	Wangda Tan (No longer used)	MENG DING
HDFS-9387	Fix namenodeUri parameter parsing in NNThroughputBenchmark	Major	test	Mingliang Liu	Mingliang Liu
HDFS-9421	NNThroughputBenchmark replication test NPE with -namenode option	Major	benchmarks	Xiaoyu Yao	Mingliang Liu
YARN-4184	Remove update reservation state api from state store as its not used by ReservationSystem	Major	capacityscheduler, fairscheduler, resourcemanager	Anubhav Dhoot	Sean Po
HADOOP-12582	Using BytesWritable's getLength() and getBytes() instead of get() and getSize()	Major	.	Tsuyoshi Ozawa	Akira Ajisaka
YARN-3454	Add efficient merge operation to RLESparseResourceAllocation	Major	resourcemanager	Carlo Curino	Carlo Curino
HDFS-7796	Include X-editable for slick contenteditable fields in the web UI	Major	ui	Ravi Prakash	Ravi Prakash
YARN-3980	Plumb resource-utilization info in node heartbeat through to the scheduler	Major	resourcemanager, scheduler	Karthik Kambatla	Inigo Goiri
HADOOP-11954	Solaris does not support RLIMIT_MEMLOCK as in Linux	Major	.	Malcolm Kavalsky	Alan Burlison
YARN-4384	updateNodeResource CLI should not accept negative values for resource	Major	graceful, resourcemanager	Sushmitha Sreenivasan	Junping Du
HDFS-9438	TestPipelinesFailover assumes Linux ifconfig	Minor	test	Alan Burlison	John Zhuge
YARN-4292	ResourceUtilization should be a part of NodeInfo REST API	Major	.	Wangda Tan	Sunil G
HDFS-9436	Make NNThroughputBenchmark$BlockReportStats run with 10 datanodes by default	Minor	test	Mingliang Liu	Mingliang Liu
HDFS-9484	NNThroughputBenchmark$BlockReportStats should not send empty block reports	Major	test	Mingliang Liu	Mingliang Liu
YARN-4405	Support node label store in non-appendable file system	Major	api, client, resourcemanager	Wangda Tan	Wangda Tan
HDFS-9214	Support reconfiguring dfs.datanode.balance.max.concurrent.moves without DN restart	Major	datanode	Xiaobing Zhou	Xiaobing Zhou
YARN-4248	REST API for submit/update/delete Reservations	Major	resourcemanager	Carlo Curino	Carlo Curino
YARN-4358	Improve relationship between SharingPolicy and ReservationAgent	Major	capacityscheduler, fairscheduler, resourcemanager	Carlo Curino	Carlo Curino
YARN-3946	Update exact reason as to why a submitted app is in ACCEPTED state to app's diagnostic message	Major	capacity scheduler, resourcemanager	Sumit Nigam	Naganarasimha G R
YARN-4309	Add container launch related debug information to container logs when a container fails	Major	nodemanager	Varun Vasudev	Varun Vasudev
YARN-4293	ResourceUtilization should be a part of yarn node CLI	Major	.	Wangda Tan	Sunil G
YARN-4416	Deadlock due to synchronised get Methods in AbstractCSQueue	Minor	capacity scheduler, resourcemanager	Naganarasimha G R	Naganarasimha G R
YARN-3226	UI changes for decommissioning node	Major	graceful	Junping Du	Sunil G
YARN-4164	Retrospect update ApplicationPriority API return type	Major	resourcemanager	Rohith Sharma K S	Rohith Sharma K S
YARN-4234	New put APIs in TimelineClient for ats v1.5	Major	timelineserver	Xuan Gong	Xuan Gong
YARN-4098	Document ApplicationPriority feature	Major	resourcemanager	Rohith Sharma K S	Rohith Sharma K S
HDFS-7779	Support changing ownership, group and replication in HDFS Web UI	Major	ui	Ravi Prakash	Ravi Prakash
YARN-2902	Killing a container that is localizing can orphan resources in the DOWNLOADING state	Major	nodemanager	Jason Lowe	Varun Saxena
YARN-4393	TestResourceLocalizationService#testFailedDirsResourceRelease fails intermittently	Major	test	Varun Saxena	Varun Saxena
YARN-4479	Retrospect app-priority in pendingOrderingPolicy during recovering applications	Major	api, resourcemanager	Rohith Sharma K S	Rohith Sharma K S
HDFS-9621	getListing wrongly associates Erasure Coding policy to pre-existing replicated files under an EC directory	Critical	erasure-coding	Sushmitha Sreenivasan	Jing Zhao
YARN-4537	Pull out priority comparison from fifocomparator and use compound comparator for FifoOrdering policy	Major	capacity scheduler	Rohith Sharma K S	Rohith Sharma K S
HADOOP-11262	Enable YARN to use S3A	Major	fs/s3	Thomas Demoor	Pieter Reuse
YARN-4265	Provide new timeline plugin storage to support fine-grained entity caching	Major	timelineserver	Li Lu	Li Lu
YARN-4304	AM max resource configuration per partition to be displayed/updated correctly in UI and in various partition related metrics	Major	webapp	Sunil G	Sunil G
YARN-4557	Fix improper Queues sorting in PartitionedQueueComparator when accessible-node-labels=*	Major	resourcemanager	Naganarasimha G R	Naganarasimha G R
HDFS-9601	NNThroughputBenchmark.BlockReportStats should handle NotReplicatedYetException on adding block	Major	test	Masatake Iwasaki	Masatake Iwasaki
YARN-4614	TestApplicationPriority#testApplicationPriorityAllocationWithChangeInPriority fails occasionally	Major	test	Jason Lowe	Sunil G
HDFS-9672	o.a.h.hdfs.TestLeaseRecovery2 fails intermittently	Major	test	Mingliang Liu	Mingliang Liu
YARN-4573	TestRMAppTransitions.testAppRunningKill and testAppKilledKilled fail on trunk	Major	resourcemanager, test	Takashi Ohnishi	Takashi Ohnishi
YARN-4643	Container recovery is broken with delegating container runtime	Critical	yarn	Sidharta Seethana	Sidharta Seethana
YARN-4219	New levelDB cache storage for timeline v1.5	Major	.	Li Lu	Li Lu
YARN-4543	TestNodeStatusUpdater.testStopReentrant fails + JUnit misusage	Minor	nodemanager	Akihiro Suda	Akihiro Suda
YARN-4340	Add “list” API to reservation system	Major	capacityscheduler, fairscheduler, resourcemanager	Carlo Curino	Sean Po
YARN-4100	Add Documentation for Distributed and Delegated-Centralized Node Labels feature	Major	api, client, resourcemanager	Naganarasimha G R	Naganarasimha G R
HDFS-9503	Replace -namenode option with -fs for NNThroughputBenchmark	Major	test	Konstantin Shvachko	Mingliang Liu
HADOOP-12292	Make use of DeleteObjects optional	Major	fs/s3	Thomas Demoor	Thomas Demoor
YARN-4667	RM Admin CLI for refreshNodesResources throws NPE when nothing is configured	Critical	client	Naganarasimha G R	Naganarasimha G R
HADOOP-12752	Improve diagnostics/use of envvar/sysprop credential propagation	Minor	security	Steve Loughran	Steve Loughran
YARN-4138	Roll back container resource allocation after resource increase token expires	Major	api, nodemanager, resourcemanager	MENG DING	MENG DING
YARN-2575	Create separate ACLs for Reservation create/update/delete/list ops	Major	capacityscheduler, fairscheduler, resourcemanager	Subru Krishnan	Sean Po
HADOOP-11613	Remove commons-httpclient dependency from hadoop-azure	Major	.	Akira Ajisaka	Masatake Iwasaki
HDFS-9084	Pagination, sorting and filtering of files/directories in the HDFS Web UI	Major	ui	Ravi Prakash	Ravi Prakash
YARN-3223	Resource update during NM graceful decommission	Major	graceful, nodemanager, resourcemanager	Junping Du	Brook Zhou
YARN-4680	TimerTasks leak in ATS V1.5 Writer	Major	timelineserver	Xuan Gong	Xuan Gong
HADOOP-12711	Remove dependency on commons-httpclient for ServletUtil	Major	.	Wei-Chiu Chuang	Wei-Chiu Chuang
YARN-4566	TestMiniYarnClusterNodeUtilization sometimes fails on trunk	Major	test	Takashi Ohnishi	Takashi Ohnishi
HADOOP-12813	Migrate TestRPC and related codes to rebase on ProtobufRpcEngine	Major	.	Kai Zheng	Kai Zheng
YARN-4749	Generalize config file handling in container-executor	Major	nodemanager	Sidharta Seethana	Sidharta Seethana
YARN-4696	Improving EntityGroupFSTimelineStore on exception handling, test setup, and concurrency	Major	timelineserver	Steve Loughran	Steve Loughran
MAPREDUCE-6520	Migrate MR Client test cases part 1	Trivial	test	Dustin Cote	Dustin Cote
YARN-4545	Allow YARN distributed shell to use ATS v1.5 APIs	Major	timelineserver	Li Lu	Li Lu
YARN-4817	Change Log Level to DEBUG for putDomain call in ATS 1.5	Trivial	timelineserver	Xuan Gong	Xuan Gong
YARN-4108	CapacityScheduler: Improve preemption to only kill containers that would satisfy the incoming request	Major	capacity scheduler	Wangda Tan	Wangda Tan
HADOOP-12819	Migrate TestSaslRPC and related codes to rebase on ProtobufRpcEngine	Major	.	Kai Zheng	Kai Zheng
YARN-4815	ATS 1.5 timelineclient impl try to create attempt directory for every event call	Major	timelineserver	Xuan Gong	Xuan Gong
YARN-4814	ATS 1.5 timelineclient impl call flush after every event write	Major	timelineserver	Xuan Gong	Xuan Gong
YARN-998	Keep NM resource updated through dynamic resource config for RM/NM restart	Major	graceful, nodemanager, scheduler	Junping Du	Junping Du
MAPREDUCE-6543	Migrate MR Client test cases part 2	Trivial	test	Dustin Cote	Dustin Cote
YARN-4822	Refactor existing Preemption Policy of CS for easier adding new approach to select preemption candidates	Major	.	Wangda Tan	Wangda Tan
YARN-4634	Scheduler UI/Metrics need to consider cases like non-queue label mappings	Major	.	Sunil G	Sunil G
HADOOP-12169	ListStatus on empty dir in S3A lists itself instead of returning an empty list	Major	fs/s3	Pieter Reuse	Pieter Reuse
HDFS-10186	DirectoryScanner: Improve logs by adding full path of both actual and expected block directories	Minor	datanode	Rakesh R	Rakesh R
YARN-4826	Document configuration of ReservationSystem for CapacityScheduler	Minor	capacity scheduler	Subru Krishnan	Subru Krishnan
HADOOP-12444	Support lazy seek in S3AInputStream	Major	fs/s3	Rajesh Balamohan	Rajesh Balamohan
YARN-4928	Some yarn.server.timeline.* tests fail on Windows attempting to use a test root path containing a colon	Minor	test	Gergely Novák	Gergely Novák
YARN-4168	Test TestLogAggregationService.testLocalFileDeletionOnDiskFull failing	Critical	test	Steve Loughran	Takashi Ohnishi
HADOOP-12973	make DU pluggable	Major	.	Elliott Clark	Elliott Clark
YARN-4886	Add HDFS caller context for EntityGroupFSTimelineStore	Major	timelineserver	Li Lu	Li Lu
HDFS-10281	o.a.h.hdfs.server.namenode.ha.TestPendingCorruptDnMessages fails intermittently	Major	test	Mingliang Liu	Mingliang Liu
YARN-4909	Fix intermittent failures of TestRMWebServices And TestRMWithCSRFFilter	Blocker	.	Brahma Reddy Battula	Bibin A Chundatt
YARN-4468	Document the general ReservationSystem functionality, and the REST API	Major	capacityscheduler, fairscheduler, resourcemanager	Carlo Curino	Carlo Curino
HADOOP-13011	Clearly Document the Password Details for Keystore-based Credential Providers	Major	documentation	Larry McCay	Larry McCay
YARN-3215	Respect labels in CapacityScheduler when computing headroom	Major	capacityscheduler	Wangda Tan	Naganarasimha G R
HDFS-10224	Implement asynchronous rename for DistributedFileSystem	Major	fs, hdfs-client	Xiaobing Zhou	Xiaobing Zhou
YARN-4956	findbug issue on LevelDBCacheTimelineStore	Major	timelineserver	Xuan Gong	Zhiyuan Yang
YARN-4851	Metric improvements for ATS v1.5 storage components	Major	timelineserver	Li Lu	Li Lu
HADOOP-12749	Create a threadpoolexecutor that overrides afterExecute to log uncaught exceptions/errors	Major	.	Sidharta Seethana	Sidharta Seethana
HDFS-10346	Implement asynchronous setPermission/setOwner for DistributedFileSystem	Major	hdfs, hdfs-client	Xiaobing Zhou	Xiaobing Zhou
HADOOP-13122	Customize User-Agent header sent in HTTP requests by S3A.	Minor	fs/s3	Chris Nauroth	Chris Nauroth
HADOOP-12844	Recover when S3A fails on IOException in read()	Major	fs/s3	Pieter Reuse	Pieter Reuse
HADOOP-13028	add low level counter metrics for S3A; use in read performance tests	Major	fs/s3, metrics	Steve Loughran	Steve Loughran
HADOOP-13113	Enable parallel test execution for hadoop-aws.	Minor	test	Chris Nauroth	Chris Nauroth
HADOOP-13158	S3AFileSystem#toString might throw NullPointerException due to null cannedACL.	Minor	fs/s3	Chris Nauroth	Chris Nauroth
YARN-4832	NM side resource value should get updated if change applied in RM side	Critical	nodemanager, resourcemanager	Junping Du	Junping Du
HADOOP-13140	FileSystem#initialize must not attempt to create StorageStatistics objects with null or empty schemes	Major	fs	Brahma Reddy Battula	Mingliang Liu
HADOOP-13130	s3a failures can surface as RTEs, not IOEs	Major	fs/s3	Steve Loughran	Steve Loughran
YARN-3362	Add node label usage in RM CapacityScheduler web UI	Major	capacityscheduler, resourcemanager, webapp	Wangda Tan	Naganarasimha G R
HDFS-10390	Implement asynchronous setAcl/getAclStatus for DistributedFileSystem	Major	fs	Xiaobing Zhou	Xiaobing Zhou
YARN-857	Localization failures should be available in container diagnostics	Critical	.	Hitesh Shah	Vinod Kumar Vavilapalli
HDFS-8057	Move BlockReader implementation to the client implementation package	Major	hdfs-client	Tsz Wo Nicholas Sze	Takanobu Asanuma
YARN-4957	Add getNewReservation in ApplicationClientProtocol	Major	applications, client, resourcemanager	Subru Krishnan	Sean Po
HDFS-10431	Refactor and speedup TestAsyncDFSRename	Minor	test	Xiaobing Zhou	Xiaobing Zhou
YARN-4987	Read cache concurrency issue between read and evict in EntityGroupFS timeline store	Critical	.	Li Lu	Li Lu
HDFS-10430	Reuse FileSystem#access in TestAsyncDFS	Major	hdfs	Xiaobing Zhou	Xiaobing Zhou
HADOOP-13162	Consider reducing number of getFileStatus calls in S3AFileSystem.mkdirs	Minor	fs/s3	Rajesh Balamohan	Rajesh Balamohan
HADOOP-13131	Add tests to verify that S3A supports SSE-S3 encryption	Minor	fs/s3	Steve Loughran	Steve Loughran
HADOOP-13171	Add StorageStatistics to S3A; instrument some more operations	Minor	fs/s3	Steve Loughran	Steve Loughran
YARN-1815	Work preserving recovery of Unmanged AMs	Critical	resourcemanager	Karthik Kambatla	Subru Krishnan
YARN-5165	Fix NoOvercommitPolicy to take advantage of RLE representation of plan	Major	capacityscheduler, fairscheduler, resourcemanager	Carlo Curino	Carlo Curino
YARN-5185	StageAllocaterGreedyRLE: Fix NPE in corner case	Major	capacityscheduler, fairscheduler, resourcemanager	Carlo Curino	Carlo Curino
YARN-4525	Fix bug in RLESparseResourceAllocation.getRangeOverlapping(...)	Major	.	Ishai Menache	Ishai Menache
HADOOP-13237	s3a initialization against public bucket fails if caller lacks any credentials	Minor	fs/s3	Steve Loughran	Chris Nauroth
YARN-5199	Close LogReader in in AHSWebServices#getStreamingOutput and FileInputStream in NMWebServices#getLogs	Major	.	Xuan Gong	Xuan Gong
YARN-3426	Add jdiff support to YARN	Blocker	.	Li Lu	Li Lu
YARN-1942	Deprecate toString/fromString methods from ConverterUtils and move them to records classes like ContainerId/ApplicationId, etc.	Critical	api	Thomas Graves	Wangda Tan
HADOOP-13241	document s3a better	Minor	documentation, fs/s3	Steve Loughran	Steve Loughran
HADOOP-13284	FileSystemStorageStatistics must not attempt to read non-existent rack-aware read stats in branch-2.8	Major	fs	Mingliang Liu	Mingliang Liu
HADOOP-12975	Add jitter to CachingGetSpaceUsed's thread	Major	.	Elliott Clark	Elliott Clark
HADOOP-13280	FileSystemStorageStatistics#getLong(“readOps“) should return readOps + largeReadOps	Major	fs	Mingliang Liu	Mingliang Liu
HADOOP-13288	Guard null stats key in FileSystemStorageStatistics	Major	fs	Mingliang Liu	Mingliang Liu
HADOOP-13291	Probing stats in DFSOpsCountStatistics/S3AStorageStatistics should be correctly implemented	Major	fs	Mingliang Liu	Mingliang Liu
HDFS-10538	Remove AsyncDistributedFileSystem API	Major	hdfs-client	Xiaobing Zhou	Xiaobing Zhou
HADOOP-13203	S3A: Support fadvise “random” mode for high performance readPositioned() reads	Major	fs/s3	Rajesh Balamohan	Rajesh Balamohan
HADOOP-12229	Fix inconsistent subsection titles in filesystem.md	Minor	documentation	Masatake Iwasaki	Masatake Iwasaki
HADOOP-12242	Add in-page TOC to filesystem specification pages	Minor	documentation	Masatake Iwasaki	Masatake Iwasaki
HADOOP-13305	Define common statistics names across schemes	Major	fs	Mingliang Liu	Mingliang Liu
HADOOP-13283	Support reset operation for new global storage statistics and per FS storage stats	Major	fs	Mingliang Liu	Mingliang Liu
YARN-5080	Cannot obtain logs using YARN CLI -am for either KILLED or RUNNING AM	Critical	yarn	Sumana Sathish	Xuan Gong
HADOOP-13366	Fix dead link in o.a.h.fs.CommonConfigurationKeysPublic javadoc	Minor	documentation	Rakesh R	Rakesh R
YARN-4484	Available Resource calculation for a queue is not correct when used with labels	Major	capacity scheduler	Sunil G	Sunil G
HADOOP-13368	DFSOpsCountStatistics$OpType#fromSymbol and s3a.Statistic#fromSymbol should be O(1) operation	Major	fs	Mingliang Liu	Mingliang Liu
HADOOP-13212	Provide an option to set the socket buffers in S3AFileSystem	Minor	fs/s3	Rajesh Balamohan	Rajesh Balamohan
HDFS-10653	Optimize conversion from path string to components	Major	hdfs	Daryn Sharp	Daryn Sharp
HADOOP-13207	Specify FileSystem listStatus, listFiles and RemoteIterator	Major	documentation, fs	Steve Loughran	Steve Loughran
HADOOP-13188	S3A file-create should throw error rather than overwrite directories	Minor	fs/s3	Raymie Stata	Steve Loughran
HDFS-10642	TestLazyPersistReplicaRecovery#testDnRestartWithSavedReplicas fails intermittently	Major	datanode, test	Mingliang Liu	Mingliang Liu
HDFS-10668	TestDataNodeMXBean#testDataNodeMXBeanBlockCount fails intermittently	Major	test	Mingliang Liu	Mingliang Liu
YARN-5434	Add -client|server argument for graceful decom	Blocker	graceful	Robert Kanter	Robert Kanter
HADOOP-13429	Dispose of unnecessary SASL servers	Major	ipc	Daryn Sharp	Daryn Sharp
HADOOP-13426	More efficiently build IPC responses	Major	.	Daryn Sharp	Daryn Sharp
HDFS-10656	Optimize conversion of byte arrays back to path string	Major	hdfs	Daryn Sharp	Daryn Sharp
HDFS-10674	Optimize creating a full path from an inode	Major	hdfs	Daryn Sharp	Daryn Sharp
YARN-5342	Improve non-exclusive node partition resource allocation in Capacity Scheduler	Major	.	Wangda Tan	Sunil G
HADOOP-13438	Optimize IPC server protobuf decoding	Major	.	Daryn Sharp	Daryn Sharp
HADOOP-13418	Fix javadoc warnings by JDK8 in hadoop-nfs package	Major	.	Kai Sasaki	Kai Sasaki
HDFS-10724	Document the caller context config keys	Minor	ipc, namenode	Mingliang Liu	Mingliang Liu
HDFS-10678	Documenting NNThroughputBenchmark tool	Major	benchmarks, test	Mingliang Liu	Mingliang Liu
HDFS-10641	TestBlockManager#testBlockReportQueueing fails intermittently	Major	namenode, test	Mingliang Liu	Daryn Sharp
HADOOP-13324	s3a tests don't authenticate with S3 frankfurt (or other V4 auth only endpoints)	Major	fs/s3	Steve Loughran	Steve Loughran
HADOOP-13208	S3A listFiles(recursive=true) to do a bulk listObjects instead of walking the pseudo-tree of directories	Minor	fs/s3	Steve Loughran	Steve Loughran
HADOOP-13405	doc for “fs.s3a.acl.default” indicates incorrect values	Minor	fs/s3	Shen Yinjie	Shen Yinjie
HDFS-10711	Optimize FSPermissionChecker group membership check	Major	hdfs	Daryn Sharp	Daryn Sharp
HADOOP-13252	Tune S3A provider plugin mechanism	Minor	fs/s3	Steve Loughran	Steve Loughran
HADOOP-13446	Support running isolated unit tests separate from AWS integration tests.	Major	fs/s3	Chris Nauroth	Chris Nauroth
HDFS-10762	Pass IIP for file status related methods	Major	hdfs	Daryn Sharp	Daryn Sharp
HDFS-10772	Reduce byte/string conversions for get listing	Major	hdfs	Daryn Sharp	Daryn Sharp
YARN-3940	Application moveToQueue should check NodeLabel permission	Major	resourcemanager	Bibin A Chundatt	Bibin A Chundatt
HDFS-10768	Optimize mkdir ops	Major	hdfs	Daryn Sharp	Daryn Sharp
HDFS-10655	Fix path related byte array conversion bugs	Major	hdfs	Daryn Sharp	Daryn Sharp
HDFS-10662	Optimize UTF8 string/byte conversions	Major	hdfs	Daryn Sharp	Daryn Sharp
HADOOP-13547	Optimize IPC client protobuf decoding	Major	.	Daryn Sharp	Daryn Sharp
HADOOP-13549	Eliminate intermediate buffer for server-side PB encoding	Major	ipc	Daryn Sharp	Daryn Sharp
HADOOP-13447	Refactor S3AFileSystem to support introduction of separate metadata repository and tests.	Major	fs/s3	Chris Nauroth	Chris Nauroth
HADOOP-13541	explicitly declare the Joda time version S3A depends on	Minor	build, fs/s3	Steve Loughran	Steve Loughran
YARN-5566	Client-side NM graceful decom is not triggered when jobs finish	Major	nodemanager	Robert Kanter	Robert Kanter
HADOOP-10940	RPC client does no bounds checking of responses	Critical	ipc	Daryn Sharp	Daryn Sharp
HADOOP-13540	improve section on troubleshooting s3a auth problems	Minor	documentation, fs/s3	Steve Loughran	Steve Loughran
HDFS-8818	Allow Balancer to run faster	Major	balancer & mover	Tsz Wo Nicholas Sze	Tsz Wo Nicholas Sze
HDFS-10673	Optimize FSPermissionChecker's internal path usage	Major	hdfs	Daryn Sharp	Daryn Sharp
HADOOP-13546	Override equals and hashCode to avoid connection leakage	Major	ipc	Xiaobing Zhou	Xiaobing Zhou
HDFS-10744	Internally optimize path component resolution	Major	hdfs	Daryn Sharp	Daryn Sharp
HDFS-10805	Reduce runtime for append test	Minor	test	Gergely Novák	Gergely Novák
HADOOP-13544	JDiff reports unncessarily show unannotated APIs and cause confusion while our javadocs only show annotated and public APIs	Blocker	.	Vinod Kumar Vavilapalli	Vinod Kumar Vavilapalli
HDFS-10779	Rename does not need to re-solve destination	Major	hdfs	Daryn Sharp	Daryn Sharp
HDFS-10892	Add unit tests for HDFS command ‘dfs -tail’ and ‘dfs -stat’	Major	fs, shell, test	Mingliang Liu	Mingliang Liu
HADOOP-13599	s3a close() to be non-synchronized, so avoid risk of deadlock on shutdown	Major	fs/s3	Steve Loughran	Steve Loughran
HADOOP-12974	Create a CachingGetSpaceUsed implementation that uses df	Major	.	Elliott Clark	Elliott Clark
HDFS-10851	FSDirStatAndListingOp: stop passing path as string	Major	hdfs	Daryn Sharp	Daryn Sharp
HDFS-10619	Cache path in InodesInPath	Major	hdfs	Daryn Sharp	Daryn Sharp
HDFS-10934	TestDFSShell.testStat fails intermittently	Major	test	Eric Badger	Eric Badger
HADOOP-13674	S3A can provide a more detailed error message when accessing a bucket through an incorrect S3 endpoint.	Minor	fs/s3	Chris Nauroth	Chris Nauroth
HDFS-10956	Remove rename/delete performance penalty when not using snapshots	Major	hdfs	Daryn Sharp	Daryn Sharp
HDFS-10896	Move lock logging logic from FSNamesystem into FSNamesystemLock	Major	namenode	Erik Krogen	Erik Krogen
HDFS-10745	Directly resolve paths into INodesInPath	Major	hdfs	Daryn Sharp	Daryn Sharp
HDFS-10955	Pass IIP for FSDirAttr methods	Major	hdfs	Daryn Sharp	Daryn Sharp
HADOOP-12977	s3a to handle delete(“/”, true) robustly	Minor	fs/s3	Steve Loughran	Steve Loughran
HDFS-10939	Reduce performance penalty of encryption zones	Major	hdfs	Daryn Sharp	Daryn Sharp
HADOOP-13692	hadoop-aws should declare explicit dependency on Jackson 2 jars to prevent classpath conflicts.	Minor	fs/s3	Chris Nauroth	Chris Nauroth
HDFS-10979	Pass IIP for FSDirDeleteOp methods	Major	hdfs	Daryn Sharp	Daryn Sharp
HDFS-10980	Optimize check for existence of parent directory	Major	hdfs	Daryn Sharp	Daryn Sharp
HDFS-10988	Refactor TestBalancerBandwidth	Major	balancer & mover, test	Brahma Reddy Battula	Brahma Reddy Battula
HDFS-10985	o.a.h.ha.TestZKFailoverController should not use fixed time sleep before assertions	Minor	ha, test	Mingliang Liu	Mingliang Liu
HDFS-10972	Add unit test for HDFS command ‘dfsadmin -getDatanodeInfo’	Major	fs, shell, test	Xiaobing Zhou	Xiaobing Zhou
HDFS-10965	Add unit test for HDFS command ‘dfsadmin -printTopology’	Major	fs, shell, test	Xiaobing Zhou	Xiaobing Zhou
HDFS-11008	Change unit test for testing parsing “-source” parameter in Balancer CLI	Major	test	Mingliang Liu	Mingliang Liu
HADOOP-13419	Fix javadoc warnings by JDK8 in hadoop-common package	Major	.	Kai Sasaki	Kai Sasaki
HDFS-10922	Adding additional unit tests for Trash (II)	Major	test	Xiaoyu Yao	Weiwei Yang
HDFS-10906	Add unit tests for Trash with HDFS encryption zones	Major	encryption	Xiaoyu Yao	Hanisha Koneru
HADOOP-13735	ITestS3AFileContextStatistics.testStatistics() failing	Minor	fs/s3	Steve Loughran	Pieter Reuse
HDFS-10998	Add unit tests for HDFS command ‘dfsadmin -fetchImage’ in HA	Major	test	Xiaobing Zhou	Xiaobing Zhou
HADOOP-13727	S3A: Reduce high number of connections to EC2 Instance Metadata Service caused by InstanceProfileCredentialsProvider.	Minor	fs/s3	Rajesh Balamohan	Chris Nauroth
HADOOP-12774	s3a should use UGI.getCurrentUser.getShortname() for username	Major	fs/s3	Steve Loughran	Steve Loughran
HADOOP-13309	Document S3A known limitations in file ownership and permission model.	Minor	fs/s3	Chris Nauroth	Chris Nauroth
HDFS-11011	Add unit tests for HDFS command ‘dfsadmin -set/clrSpaceQuota’	Major	hdfs-client	Xiaobing Zhou	Xiaobing Zhou
HADOOP-13614	Purge some superfluous/obsolete S3 FS tests that are slowing test runs down	Minor	fs/s3, test	Steve Loughran	Steve Loughran
HADOOP-10597	RPC Server signals backoff to clients when all request queues are full	Major	.	Ming Ma	Ming Ma
HADOOP-13680	fs.s3a.readahead.range to use getLongBytes	Major	fs/s3	Steve Loughran	Abhishek Modi
HDFS-11030	TestDataNodeVolumeFailure#testVolumeFailure is flaky (though passing)	Major	datanode, test	Mingliang Liu	Mingliang Liu
HDFS-10997	Reduce number of path resolving methods	Major	namenode	Daryn Sharp	Daryn Sharp
HDFS-11065	Add space quota tests for heterogenous storages	Major	hdfs	Xiaobing Zhou	Xiaobing Zhou
HDFS-11031	Add additional unit test for DataNode startup behavior when volumes fail	Major	datanode, test	Mingliang Liu	Mingliang Liu
HADOOP-10300	Allowed deferred sending of call responses	Major	ipc	Daryn Sharp	Daryn Sharp
HDFS-11076	Add unit test for extended Acls	Major	test	Chen Liang	Chen Liang
HDFS-11085	Add unit test for NameNode failing to start when name dir is unwritable	Major	namenode, test	Mingliang Liu	Xiaobing Zhou
YARN-5802	updateApplicationPriority api in scheduler should ensure to re-insert app to correct ordering policy	Critical	capacity scheduler	Bibin A Chundatt	Bibin A Chundatt
HDFS-11083	Add unit test for DFSAdmin -report command	Major	shell, test	Mingliang Liu	Xiaobing Zhou
YARN-4498	Application level node labels stats to be available in REST	Major	api, client, resourcemanager	Bibin A Chundatt	Bibin A Chundatt
HDFS-11122	TestDFSAdmin#testReportCommand fails due to timed out	Minor	test	Yiqun Lin	Yiqun Lin
HDFS-10872	Add MutableRate metrics for FSNamesystemLock operations	Major	namenode	Erik Krogen	Erik Krogen
HDFS-11105	TestRBWBlockInvalidation#testRWRInvalidation fails intermittently	Major	namenode, test	Yiqun Lin	Yiqun Lin
HADOOP-13822	Use GlobalStorageStatistics.INSTANCE.reset() at FileSystem#clearStatistics()	Major	fs	Brahma Reddy Battula	Brahma Reddy Battula
HADOOP-11601	Enhance FS spec & tests to mandate FileStatus.getBlocksize() >0 for non-empty files	Minor	fs, test	Steve Loughran	Steve Loughran
HADOOP-13801	regression: ITestS3AMiniYarnCluster failing	Major	fs/s3	Steve Loughran	Steve Loughran
HADOOP-12804	Read Proxy Password from Credential Providers in S3 FileSystem	Minor	fs/s3	Larry McCay	Larry McCay
HADOOP-13823	s3a rename: fail if dest file exists	Blocker	fs/s3	Steve Loughran	Steve Loughran
HADOOP-13857	S3AUtils.translateException to map (wrapped) InterruptedExceptions to InterruptedIOEs	Major	fs/s3	Steve Loughran	Steve Loughran
HADOOP-13855	Fix a couple of the s3a statistic names to be consistent with the rest	Major	fs/s3	Steve Loughran	Steve Loughran
HADOOP-13257	Improve Azure Data Lake contract tests.	Major	fs/adl	Chris Nauroth	Vishwajeet Dusane
YARN-4390	Do surgical preemption based on reserved container in CapacityScheduler	Major	capacity scheduler	Eric Payne	Wangda Tan
HDFS-8630	WebHDFS : Support get/set/unset StoragePolicy	Major	webhdfs	nijel	Surendra Singh Lilhore
HADOOP-13871	ITestS3AInputStreamPerformance.testTimeToOpenAndReadWholeFileBlocks performance awful	Major	fs/s3	Steve Loughran	Steve Loughran
YARN-2009	CapacityScheduler: Add intra-queue preemption for app priority support	Major	capacityscheduler	Devaraj K	Sunil G
YARN-4844	Add getMemorySize/getVirtualCoresSize to o.a.h.y.api.records.Resource	Blocker	api	Wangda Tan	Wangda Tan
YARN-4990	Re-direction of a particular log file within in a container in NM UI does not redirect properly to Log Server ( history ) on container completion	Major	.	Hitesh Shah	Xuan Gong
YARN-3866	AM-RM protocol changes to support container resizing	Blocker	api	MENG DING	MENG DING
HADOOP-13336	S3A to support per-bucket configuration	Major	fs/s3	Steve Loughran	Steve Loughran
HDFS-8377	Support HTTP/2 in datanode	Major	.	Duo Zhang	Duo Zhang
HADOOP-14019	fix some typos in the s3a docs	Minor	documentation, fs/s3	Steve Loughran	Steve Loughran
HADOOP-14081	S3A: Consider avoiding array copy in S3ABlockOutputStream (ByteArrayBlock)	Minor	fs/s3	Rajesh Balamohan	Rajesh Balamohan
YARN-6143	Fix incompatible issue caused by YARN-3583	Blocker	rolling upgrade	Wangda Tan	Sunil G
HADOOP-14113	review ADL Docs	Minor	documentation, fs/adl	Steve Loughran	Steve Loughran
HADOOP-14138	Remove S3A ref from META-INF service discovery, rely on existing core-default entry	Critical	fs/s3	Steve Loughran	Steve Loughran
HADOOP-14123	Remove misplaced ADL service provider config file for FileSystem	Minor	fs/adl	John Zhuge	John Zhuge
HADOOP-14153	ADL module has messed doc structure	Major	fs/adl	Mingliang Liu	Mingliang Liu
HADOOP-14173	Remove unused AdlConfKeys#ADL_EVENTS_TRACKING_SOURCE	Trivial	fs/adl	John Zhuge	John Zhuge

OTHER:

JIRA	Summary	Priority	Component	Reporter	Contributor
YARN-3357	Move TestFifoScheduler to FIFO package	Major	scheduler, test	Rohith Sharma K S	Rohith Sharma K S
HADOOP-11814	Reformat hadoop-annotations, o.a.h.classification.tools	Minor	.	Li Lu	Li Lu
MAPREDUCE-6388	Remove deprecation warnings from JobHistoryServer classes	Minor	jobhistoryserver	Ray Chiang	Ray Chiang
YARN-3026	Move application-specific container allocation logic from LeafQueue to FiCaSchedulerApp	Major	capacityscheduler	Wangda Tan	Wangda Tan
HDFS-8938	Extract BlockToMarkCorrupt and ReplicationWork as standalone classes from BlockManager	Major	.	Mingliang Liu	Mingliang Liu
HDFS-9027	Refactor o.a.h.hdfs.DataStreamer#isLazyPersist() method	Major	.	Mingliang Liu	Mingliang Liu
MAPREDUCE-6477	Replace usage of deprecated NameNode.DEFAULT_PORT in TestFileSystem	Major	.	Mingliang Liu	Mingliang Liu
MAPREDUCE-6483	Replace deprecated method NameNode.getUri() with DFSUtilClient.getNNUri() in TestMRCredentials	Major	test	Mingliang Liu	Mingliang Liu
HDFS-9130	Use GenericTestUtils#setLogLevel to the logging level	Major	.	Mingliang Liu	Mingliang Liu
HADOOP-12446	Undeprecate createNonRecursive()	Major	.	Ted Yu	Ted Yu
HDFS-8979	Clean up checkstyle warnings in hadoop-hdfs-client module	Major	.	Mingliang Liu	Mingliang Liu
HADOOP-11791	Update src/site/markdown/releases to include old versions of Hadoop	Major	build, documentation	Allen Wittenauer	Allen Wittenauer
HADOOP-12514	Make static fields in GenericTestUtils for assertExceptionContains() package-private and final	Minor	test	Mingliang Liu	Mingliang Liu
HDFS-9377	Fix findbugs warnings in FSDirSnapshotOp	Major	namenode	Mingliang Liu	Mingliang Liu
HADOOP-12567	NPE in SaslRpcServer	Major	.	Sergey Shelukhin	Sergey Shelukhin
YARN-4653	Document YARN security model from the perspective of Application Developers	Major	site	Steve Loughran	Steve Loughran
HDFS-10200	Docs for WebHDFS still describe GETDELEGATIONTOKENS operation	Trivial	documentation	Wellington Chevreuil	Wellington Chevreuil
HDFS-9353	Code and comment mismatch in JavaKeyStoreProvider	Trivial	.	nijel	Andras Bokor
HDFS-10984	Expose nntop output as metrics	Major	namenode	Siddharth Wagle	Siddharth Wagle
YARN-5704	Provide config knobs to control enabling/disabling new/work in progress features in container-executor	Major	yarn	Sidharta Seethana	Sidharta Seethana
HADOOP-14091	AbstractFileSystem implementaion for ‘wasbs’ scheme	Major	fs/azure	Varada Hemeswari	Varada Hemeswari
YARN-6274	Documentation refers to incorrect nodemanager health checker interval property	Trivial	documentation	Charles Zhang	Weiwei Yang