HBASE Changelog

HBASE Changelog

Release 2.1.8 - Unreleased (as of 2019-11-19)

IMPROVEMENTS:

JIRA	Summary	Priority	Component
HBASE-19450	Add log about average execution time for ScheduledChore	Minor	Operability
HBASE-23283	Provide clear and consistent logging about the period of enabled chores	Minor	Operability
HBASE-23245	All MutableHistogram implementations should remove maxExpected	Major	metrics
HBASE-23228	Allow for jdk8 specific modules on branch-1 in precommit/nightly testing	Critical	build, test
HBASE-23082	Backport low-latency snapshot tracking for space quotas to 2.x	Major	Quotas
HBASE-23238	Additional test and checks for null references on ScannerCallableWithReplicas	Minor	.
HBASE-23221	Polish the WAL interface after HBASE-23181	Major	regionserver, wal
HBASE-23207	Log a region open journal	Minor	.
HBASE-23172	HBase Canary region success count metrics reflect column family successes, not region successes	Minor	canary
HBASE-20626	Change the value of “Requests Per Second” on WEBUI	Major	metrics, UI
HBASE-23093	Avoid Optional Anti-Pattern where possible	Minor	.
HBASE-23114	Use archiveArtifacts in Jenkinsfiles	Trivial	.
HBASE-23095	Reuse FileStatus in StoreFileInfo	Major	mob, snapshots
HBASE-23116	LoadBalancer should log table name when balancing per table	Minor	.
HBASE-22874	Define a public interface for Canary and move existing implementation to LimitedPrivate	Critical	canary
HBASE-23038	Provide consistent and clear logging about disabling chores	Minor	master, regionserver

BUG FIXES:

JIRA	Summary	Priority	Component
HBASE-23318	LoadTestTool doesn't start	Minor	.
HBASE-23294	ReplicationBarrierCleaner should delete all the barriers for a removed region which does not belong to any serial replication peer	Major	master, Replication
HBASE-23290	shell processlist command is broken	Major	shell
HBASE-18439	Subclasses of o.a.h.h.chaos.actions.Action all use the same logger	Minor	integration tests
HBASE-23262	Cannot load Master UI	Major	master, UI
HBASE-22980	HRegionPartioner getPartition() method incorrectly partitions the regions of the table.	Major	mapreduce
HBASE-21458	Error: Could not find or load main class org.apache.hadoop.hbase.util.GetJavaProperty	Minor	build, Client
HBASE-23243	[pv2] Filter out SUCCESS procedures; on decent-sized cluster, plethora overwhelms problems	Major	proc-v2, UI
HBASE-23247	[hbck2] Schedule SCPs for ‘Unknown Servers’	Major	hbck2
HBASE-23241	TestExecutorService sometimes fail	Major	test
HBASE-23244	NPEs running Canary	Major	canary
HBASE-23231	ReplicationSource do not update metrics after refresh	Major	wal
HBASE-23175	Yarn unable to acquire delegation token for HBase Spark jobs	Major	security, spark
HBASE-22739	ArrayIndexOutOfBoundsException when balance	Major	Balancer
HBASE-23192	CatalogJanitor consistencyCheck does not log problematic row on exception	Minor	hbck2
HBASE-20827	Add pause when retrying after CallQueueTooBigException for reportRegionStateTransition	Major	Region Assignment
HBASE-23171	Ensure region state error messages include server making report (branch-2.1)	Minor	amv2, Operability
HBASE-23222	Better logging and mitigation for MOB compaction failures	Critical	mob
HBASE-23181	Blocked WAL archive: “LogRoller: Failed to schedule flush of XXXX, because it is not online on us”	Major	regionserver, wal
HBASE-23193	ConnectionImplementation.isTableAvailable can not deal with meta table on branch-2.x	Major	rsgroup, test
HBASE-23177	If fail to open reference because FNFE, make it plain it is a Reference	Major	Operability
HBASE-22370	ByteBuf LEAK ERROR	Major	rpc, wal
HBASE-23155	May NPE when concurrent AsyncNonMetaRegionLocator#updateCachedLocationOnError	Major	asyncclient
HBASE-21540	when set property “hbase.systemtables.compacting.memstore.type” to “basic” or “eager” will cause an exception	Major	conf
HBASE-23153	PrimaryRegionCountSkewCostFunction SLB function should implement CostFunction#isNeeded	Major	.
HBASE-23154	list_deadservers return incorrect no of rows	Minor	shell
HBASE-23115	Unit change for StoreFileSize and MemStoreSize	Minor	metrics, UI
HBASE-23138	Drop_all table by regex fail from Shell - Similar to HBASE-23134	Major	shell
HBASE-23139	MapReduce jobs lauched from convenience distribution are nonfunctional	Blocker	mapreduce
HBASE-23134	Enable_all and Disable_all table by Regex fail from Shell	Major	shell
HBASE-22903	alter_status command is broken	Major	metrics, shell
HBASE-23094	Wrong log message in simpleRegionNormaliser while checking if merge is enabled.	Minor	.
HBASE-23125	TestRSGroupsAdmin2 is flaky	Major	test
HBASE-23119	ArrayIndexOutOfBoundsException in PrivateCellUtil#qualifierStartsWith	Major	.

SUB-TASKS:

JIRA	Summary	Priority	Component
HBASE-23301	Generate CHANGES.md and RELEASENOTES.md for 2.1.8	Major	documentation
HBASE-23300	Set version as 2.1.8 in branch-2.1 in prep for first RC of 2.1.8	Major	build, pom
HBASE-23136	PartionedMobFileCompactor bulkloaded files shouldn't get replicated (addressing buklload replication related issue raised in HBASE-22380)	Critical	.
HBASE-23163	Refactor HStore.getStorefilesSize related methods	Major	regionserver
HBASE-23131	Set version as 2.1.8-SNAPSHOT in branch-2.1	Major	build, pom

OTHER:

JIRA	Summary	Priority	Component
HBASE-23236	Upgrade to yetus 0.11.1	Major	build
HBASE-23250	Log message about CleanerChore delegate initialization should be at INFO	Minor	master, Operability
HBASE-23227	Upgrade jackson-databind to 2.9.10.1	Blocker	dependencies, REST, security
HBASE-23053	Disable concurrent nightly builds	Minor	build

Release 2.1.7 - Unreleased (as of 2019-10-02)

NEW FEATURES:

JIRA	Summary	Priority	Component
HBASE-11062	hbtop	Major	hbtop

IMPROVEMENTS:

JIRA	Summary	Priority	Component
HBASE-22930	Set unique name to longCompactions/shortCompactions threads	Minor	.
HBASE-23035	Retain region to the last RegionServer make the failover slower	Major	.
HBASE-23075	Upgrade jackson to version 2.9.10 due to CVE-2019-16335 and CVE-2019-14540	Major	dependencies, hbase-connectors, REST, security
HBASE-22975	Add read and write QPS metrics at server level and table level	Minor	metrics
HBASE-23058	Should be “Column Family Name” in table.jsp	Minor	.
HBASE-23049	TableDescriptors#getAll should return the tables ordering by the name which contain namespace	Minor	.
HBASE-23041	Should not show split parent regions in HBCK report's unknown server part	Major	.
HBASE-23044	CatalogJanitor#cleanMergeQualifier may clean wrong parent regions	Critical	.
HBASE-23037	Make the split WAL related log more readable	Minor	.
HBASE-22846	Internal Error 500 when Using HBASE REST API to Create Namespace.	Major	hbase-connectors
HBASE-22804	Provide an API to get list of successful regions and total expected regions in Canary	Minor	canary
HBASE-22701	Better handle invalid local directory for DynamicClassLoader	Major	regionserver
HBASE-22724	Add a emoji on the vote table for pre commit result on github	Major	build, test
HBASE-22954	Whitelist net.java.dev.jna which got pulled in through Hadoop 3.3.0	Minor	community, hadoop3
HBASE-22905	Avoid temp ByteBuffer allocation in BlockingRpcConnection#writeRequest	Major	.
HBASE-22962	Fix typo in javadoc description	Minor	documentation
HBASE-22872	Don't create normalization plan unnecesarily when split and merge both are disabled	Minor	.

BUG FIXES:

JIRA	Summary	Priority	Component
HBASE-23054	Remove synchronization block from MetaTableMetrics and fix LossyCounting algorithm	Major	metrics
HBASE-22380	break circle replication when doing bulkload	Critical	Replication
HBASE-22965	RS Crash due to DBE reference to an reused ByteBuff	Major	.
HBASE-22012	SpaceQuota DisableTableViolationPolicy will cause cycles of enable/disable table	Major	.
HBASE-22944	TableNotFoundException: hbase:quota is thrown when region server is restarted.	Minor	Quotas
HBASE-22142	Space quota: If table inside namespace having space quota is dropped, data size usage is still considered for the drop table.	Minor	.
HBASE-22649	Encode StoreFile path URLs in the UI to handle scenarios where CF contains special characters (like # etc.)	Major	UI
HBASE-22941	MetaTableAccessor.getMergeRegions() returns parent regions in random order	Major	.
HBASE-23051	Remove unneeded Mockito.mock invocations	Major	test
HBASE-23005	Table UI showed exception message when table is disabled	Minor	.
HBASE-23040	region mover gives NullPointerException instead of saying a host isn't in the cluster	Minor	.
HBASE-23043	TestWALEntryStream times out	Major	wal
HBASE-22955	Branches-1 precommit and nightly yetus jobs are using jdk8 for jdk7 jobs	Major	.
HBASE-22929	MemStoreLAB ChunkCreator may memory leak	Major	.
HBASE-23006	RSGroupBasedLoadBalancer should also try to place replicas for the same region to different region servers	Major	Region Assignment, rsgroup
HBASE-23007	UnsatisfiedLinkError when using hbase-shaded packages under linux	Critical	shading
HBASE-22013	SpaceQuotas - getNumRegions() returning wrong number of regions due to region replicas	Major	.
HBASE-22979	Call ChunkCreator.initialize in TestHRegionWithInMemoryFlush	Critical	.
HBASE-22963	Netty ByteBuf leak in rpc client implementation	Major	rpc
HBASE-22981	Remove unused flags for Yetus	Critical	build
HBASE-22970	split parents show as overlaps in the HBCK Report	Major	.
HBASE-22961	Deprecate hbck1 in core	Major	hbck
HBASE-22896	TestHRegion.testFlushMarkersWALFail is flaky	Minor	.
HBASE-22943	Various procedures should not cache log trace level	Minor	proc-v2
HBASE-22881	Fix non-daemon threads in hbase server implementation	Major	master
HBASE-22893	Change the comment in HBaseClassTestRule to reflect change in default test timeouts	Trivial	.
HBASE-22928	ScanMetrics counter update may not happen in case of exception in TableRecordReaderImpl	Minor	mapreduce
HBASE-22935	TaskMonitor warns MonitoredRPCHandler task may be stuck when it recently started	Minor	logging
HBASE-22922	Only the two first regions are locked in MergeTableRegionsProcedure	Major	.
HBASE-22852	hbase nightlies leaking gpg-agents	Minor	build

TESTS:

JIRA	Summary	Priority	Component
HBASE-22886	Code Coverage Improvement: Create Unit Tests for ConnectionId	Trivial	test
HBASE-22766	Code Coverage Improvement: Create Unit Tests for ResultStatsUtil	Trivial	test

SUB-TASKS:

JIRA	Summary	Priority	Component
HBASE-23108	Generate CHANGES.md and RELEASENOTES.md for 2.1.7	Major	documentation
HBASE-23097	Set version as 2.1.7 in branch-2.1 in prep for first RC of 2.1.7	Major	build
HBASE-22927	Upgrade mockito version for Java 11 compatibility	Major	.
HBASE-22796	[HBCK2] Add fix of overlaps to fixMeta hbck Service	Major	.
HBASE-22993	HBCK report UI showed -1 if hbck chore not running	Minor	.
HBASE-23014	Should not show split parent regions in hbck report UI	Major	.
HBASE-22859	[HBCK2] Fix the orphan regions on filesystem	Major	documentation, hbck2
HBASE-22960	Set version as 2.1.7-SNAPSHOT in branch-2.1	Major	build, pom

OTHER:

JIRA	Summary	Priority	Component
HBASE-21745	Make HBCK2 be able to fix issues other than region assignment	Critical	hbase-operator-tools, hbck2
HBASE-23023	upgrade shellcheck used to test in nightly and precommit	Major	build

Release 2.1.6 - Unreleased (as of 2019-08-26)

INCOMPATIBLE CHANGES:

JIRA	Summary	Priority	Component
HBASE-22690	Deprecate / Remove OfflineMetaRepair in hbase-2+	Major	hbck2

NEW FEATURES:

JIRA	Summary	Priority	Component
HBASE-15666	shaded dependencies for hbase-testing-util	Critical	test

IMPROVEMENTS:

JIRA	Summary	Priority	Component
HBASE-20509	Put List in HashSet directly without using addAll function to improve performance	Trivial	Performance
HBASE-21996	Set locale for javadoc	Major	documentation
HBASE-22464	Improvements to hbase-vote script	Trivial	scripts
HBASE-22810	Initialize an separate ThreadPoolExecutor for taking/restoring snapshot	Major	.
HBASE-22844	Fix Checkstyle issues in client snapshot exceptions	Minor	Client
HBASE-22871	Move the DirScanPool out and do not use static field	Major	master
HBASE-22841	TimeRange's factory functions do not support ranges, only `allTime` and `at`	Major	Client
HBASE-22828	Log a region close journal	Minor	.
HBASE-22812	InterfaceAudience annotation in CatalogJanitor uses fully-qualified name	Minor	.
HBASE-22800	Add mapreduce dependencies to hbase-shaded-testing-util	Major	.
HBASE-22731	ReplicationSource and HBaseInterClusterReplicationEndpoint log messages should include a target Peer identifier	Minor	Replication
HBASE-22759	Add user info to AUDITLOG events when doing grant/revoke	Major	logging, security
HBASE-22785	Reduce number of Checkstyle issues in client exceptions	Minor	Client
HBASE-22786	Fix Checkstyle issues in tests of hbase-client	Minor	Client
HBASE-22677	Add unit tests for org.apache.hadoop.hbase.util.ByteRangeUtils and org.apache.hadoop.hbase.util.Classes	Major	java, test
HBASE-22787	Clean up of tests in hbase-zookeeper	Minor	Zookeeper
HBASE-22363	Remove hardcoded number of read cache block buckets	Trivial	BlockCache, BucketCache
HBASE-22764	Fix remaining Checkstyle issues in hbase-rsgroup	Trivial	rsgroup
HBASE-22763	Fix remaining Checkstyle issue in hbase-procedure	Trivial	.
HBASE-22743	ClientUtils for hbase-examples	Minor	.
HBASE-22750	Correct @throws in comment	Trivial	Client, rpc
HBASE-22702	[Log] ‘Group not found for table’ is chatty	Trivial	.
HBASE-22721	Refactor HBaseFsck: move the inner class out	Major	.
HBASE-22692	Rubocop definition is not used in the /bin directory	Minor	.
HBASE-22610	[BucketCache] Rename “hbase.offheapcache.minblocksize”	Trivial	.
HBASE-22704	Avoid NPE when access table.jsp and snapshot.jsp but master not finish initialization	Minor	.
HBASE-22643	Delete region without archiving only if regiondir is present	Major	HFile
HBASE-22689	Line break for fix version in documentation	Trivial	documentation
HBASE-22638	Zookeeper Utility enhancements	Minor	Zookeeper
HBASE-22669	Add unit tests for org.apache.hadoop.hbase.util.Strings	Major	java
HBASE-22604	fix the link in the docs to “Understanding HBase and BigTable” by Jim R. Wilson	Trivial	documentation
HBASE-22633	Remove redundant call to substring for ZKReplicationQueueStorage	Minor	.
HBASE-22595	Use full qualified name in Checkstyle suppressions	Trivial	.
HBASE-22616	responseTooXXX logging for Multi should characterize the component ops	Minor	.
HBASE-22596	[Chore] Separate the execution period between CompactionChecker and PeriodicMemStoreFlusher	Minor	Compaction
HBASE-22561	modify HFilePrettyPrinter to accept non-hbase.rootdir directories	Minor	.
HBASE-22344	Document deprecated public APIs	Major	API, community, documentation
HBASE-22593	Add local Jenv file to gitignore	Trivial	.
HBASE-22160	Add sorting functionality in regionserver web UI for user regions	Minor	monitoring, regionserver, UI, Usability
HBASE-22284	optimization StringBuilder.append of AbstractMemStore.toString	Trivial	.
HBASE-22523	Refactor RegionStates#getAssignmentsByTable to make it easy to understand	Major	.
HBASE-22511	More missing /rs-status links	Minor	UI
HBASE-22496	UnsafeAccess.unsafeCopy should not copy more than UNSAFE_COPY_THRESHOLD on each iteration	Major	.
HBASE-22488	Cleanup the explicit timeout value for test methods	Major	.

BUG FIXES:

JIRA	Summary	Priority	Component
HBASE-22867	The ForkJoinPool in CleanerChore will spawn thousands of threads in our cluster with thousands table	Critical	master
HBASE-22904	NPE occurs when RS send space quota usage report during HMaster init	Minor	.
HBASE-22806	Deleted CF are not cleared if memstore contain entries	Major	API
HBASE-22601	Misconfigured addition of peers leads to cluster shutdown.	Major	.
HBASE-22863	Avoid Jackson versions and dependencies with known CVEs	Major	dependencies
HBASE-22882	TestFlushSnapshotFromClient#testConcurrentSnapshottingAttempts is flakey (was written flakey)	Major	test
HBASE-22870	reflection fails to access a private nested class	Major	master
HBASE-22860	Master's webui returns NPE/HTTP 500 under maintenance mode	Major	master, UI
HBASE-22856	HBASE-Find-Flaky-Tests fails with pip error	Major	build, test
HBASE-22632	SplitTableRegionProcedure and MergeTableRegionsProcedure should skip store files for unknown column families	Major	proc-v2
HBASE-22838	assembly:single failure: user id or group id ‘xxxxx’ is too big	Major	build
HBASE-22840	Fix backport of HBASE-21325	Major	regionserver
HBASE-22417	DeleteTableProcedure.deleteFromMeta method should remove table from Master's table descriptors cache	Major	.
HBASE-22115	HBase RPC aspires to grow an infinite tree of trace scopes; some other places are also unsafe	Critical	rpc, tracing
HBASE-22539	WAL corruption due to early DBBs re-use when Durability.ASYNC_WAL is used	Blocker	rpc, wal
HBASE-22801	Maven build issue on Github PRs	Major	build
HBASE-22793	RPC server connection is logging user as NULL principal	Minor	rpc
HBASE-22778	Upgrade jasckson databind to 2.9.9.2	Blocker	dependencies
HBASE-22773	when set blockSize option in Performance Evaluation tool, error occurs:ERROR: Unrecognized option/command: --blockSize=131072	Minor	mapreduce
HBASE-22735	list_regions may throw an error if a region is RIT	Minor	shell
HBASE-22145	windows hbase-env causes hbase cli/etc to ignore HBASE_OPTS	Major	.
HBASE-22758	Remove the unneccesary info cf deletion in DeleteTableProcedure#deleteFromMeta	Major	.
HBASE-22751	table.jsp fails if ugly regions in table	Major	UI
HBASE-22733	TestSplitTransactionOnCluster.testMasterRestartAtRegionSplitPendingCatalogJanitor is flakey	Major	.
HBASE-22715	All scan requests should be handled by scan handler threads in RWQueueRpcExecutor	Minor	.
HBASE-22722	Upgrade jackson databind dependencies to 2.9.9.1	Blocker	dependencies
HBASE-22603	Javadoc Warnings related to @link tag	Trivial	documentation
HBASE-22720	Incorrect link for hbase.unittests	Trivial	documentation
HBASE-22537	Split happened Replica region can not be deleted after deleting table successfully and restarting RegionServer	Minor	Region Assignment
HBASE-20368	Fix RIT stuck when a rsgroup has no online servers but AM's pendingAssginQueue is cleared	Major	rsgroup
HBASE-22700	Incorrect timeout in recommended ZooKeeper configuration	Minor	documentation
HBASE-22661	list_regions command in hbase shell is broken	Major	shell
HBASE-22684	The log rolling request maybe canceled immediately in LogRoller due to a race	Major	wal
HBASE-22586	Javadoc Warnings related to @param tag	Trivial	documentation
HBASE-22571	Javadoc Warnings related to @return tag	Trivial	documentation
HBASE-22681	The ‘assert highestUnsyncedTxid < entry.getTxid();’ in AbstractFWAL.append may fail when using AsyncFSWAL	Critical	wal
HBASE-22686	ZkSplitLogWorkerCoordination doesn't allow a regionserver to pick up all of the split work it is capable of	Major	.
HBASE-22656	[Metrics] Tabe metrics ‘BatchPut’ and ‘BatchDelete’ are never updated	Minor	metrics
HBASE-22582	The Compaction writer may access the lastCell whose memory has been released when appending fileInfo in the final	Major	Compaction
HBASE-22652	Flakey TestLockManager; test timed out after 780 seconds	Major	proc-v2
HBASE-22637	fix flaky TestMetaTableMetrics test	Major	metrics, test
HBASE-13798	TestFromClientSide* don't close the Table	Trivial	test
HBASE-21751	WAL creation fails during region open may cause region assign forever fail	Major	.
HBASE-22477	Throwing exception when meta region is not in OPEN state in client registry may crash a master	Major	Client, master, meta
HBASE-22169	Open region failed cause memory leak	Critical	.
HBASE-22617	Recovered WAL directories not getting cleaned up	Blocker	wal
HBASE-22605	Ref guide includes dev guidance only applicable to EOM versions	Trivial	documentation
HBASE-22581	user with “CREATE” permission can grant, but not revoke permissions on created table	Major	security
HBASE-22565	Javadoc Warnings: @see cannot be used in inline documentation	Trivial	documentation
HBASE-22562	PressureAwareThroughputController#skipControl never invoked	Trivial	Operability
HBASE-22530	The metrics of store files count of region are returned to clients incorrectly	Minor	metrics, regionserver
HBASE-22458	TestClassFinder fails when run on JDK11	Minor	java, test
HBASE-22563	Reduce retained jobs for Jenkins pipelines	Major	.
HBASE-22551	TestMasterOperationsForRegionReplicas is flakey	Major	read replicas, test
HBASE-22481	Javadoc Warnings: reference not found	Trivial	documentation
HBASE-22520	Avoid possible NPE in HalfStoreFileReader seekBefore()	Major	.
HBASE-22546	TestRegionServerHostname#testRegionServerHostname fails reliably for me	Major	.
HBASE-22534	TestCellUtil fails when run on JDK11	Minor	java, test
HBASE-22536	TestForeignExceptionSerialization fails when run on JDK11	Minor	java
HBASE-22535	TestShellRSGroups fails when run on JDK11	Minor	java, shell
HBASE-22518	yetus personality is treating branch-1.4 like earlier branches for hadoopcheck	Major	test
HBASE-22522	The integration test in master branch's nightly job has error “ERROR: Only found 1050 rows.”	Major	.
HBASE-22490	Nightly client integration test fails with hadoop-3	Major	build
HBASE-22487	getMostLoadedRegions is unused	Trivial	regionserver
HBASE-22486	Fix flaky test TestLockManager	Major	.
HBASE-22471	Our nightly jobs for master and branch-2 are still using hadoop-2.7.1 in integration test	Major	build
HBASE-19893	restore_snapshot is broken in master branch when region splits	Critical	snapshots

TESTS:

JIRA	Summary	Priority	Component
HBASE-22894	Move testOpenRegionFailedMemoryLeak to dedicated class	Major	test
HBASE-22725	Remove all remaining javadoc warnings	Trivial	test
HBASE-22615	Make TestChoreService more robust to timing	Minor	test

SUB-TASKS:

JIRA	Summary	Priority	Component
HBASE-22858	Add HBCK Report to master's header.jsp	Minor	master
HBASE-22891	Use HBaseQA in HBase-PreCommit-GitHub-PR job	Major	build, scripts
HBASE-22771	[HBCK2] fixMeta method and server-side support	Major	hbck2
HBASE-22848	Set version as 2.1.6 in branch-2.1 in prep for first RC of 2.1.6	Major	build
HBASE-22799	Generate CHANGES.md and RELEASENOTES.md for 2.1.6	Major	documentation
HBASE-22845	Revert MetaTableAccessor#makePutFromTableState access to public	Blocker	.
HBASE-22777	Add a multi-region merge (for fixing overlaps, etc.)	Major	hbck2, proc-v2
HBASE-22803	Modify config value range to enable turning off of the hbck chore	Major	.
HBASE-22824	Show filesystem path for the orphans regions on filesystem	Major	.
HBASE-22808	HBCK Report showed the offline regions which belong to disabled table	Major	.
HBASE-22807	HBCK Report showed wrong orphans regions on FileSystem	Major	.
HBASE-22805	Fix broken unit test, TestCatalogJanitorCluster on branch-2.1 and branch-2.0	Major	.
HBASE-22737	Add a new admin method and shell cmd to trigger the hbck chore to run	Major	.
HBASE-22741	Show catalogjanitor consistency complaints in new ‘HBCK Report’ page	Major	hbck2, UI
HBASE-22723	Have CatalogJanitor report holes and overlaps; i.e. problems it sees when doing its regular scan of hbase:meta	Major	.
HBASE-22709	Add a chore thread in master to do hbck checking and display results in ‘HBCK Report’ page	Major	.
HBASE-22742	[HBCK2] Add more log for hbck operations at master side	Minor	.
HBASE-22527	[hbck2] Add a master web ui to show the problematic regions	Major	hbase-operator-tools, hbck2
HBASE-22719	Add debug support for github PR pre commit job	Major	build
HBASE-7191	HBCK - Add offline create/fix hbase.version and hbase.id	Major	hbck
HBASE-22357	Fix remaining Checkstyle issues in hbase-replication	Trivial	Replication
HBASE-22554	Upgrade to surefire 2.22.2	Major	test
HBASE-22507	Backport the pre commit changes in HBASE-22500 to all active branches	Major	build
HBASE-22316	Record the stack trace for current thread in FutureUtils.get	Major	asyncclient, Client

OTHER:

JIRA	Summary	Priority	Component
HBASE-22833	MultiRowRangeFilter should provide a method for creating a filter which is functionally equivalent to multiple prefix filters	Minor	Client
HBASE-22895	Fix the flakey TestSpaceQuotas	Major	Quotas, test
HBASE-22910	Enable TestMultiVersionConcurrencyControl	Major	test
HBASE-22913	Use Hadoop label for nightly builds	Major	build
HBASE-22911	fewer concurrent github PR builds	Critical	build
HBASE-21400	correct spelling error of ‘initilize’ in comment	Trivial	documentation
HBASE-22382	Refactor tests in TestFromClientSide	Major	test
HBASE-21606	Document use of the meta table load metrics added in HBASE-19722	Critical	documentation, meta, metrics, Operability
HBASE-19230	Write up fixVersion policy from dev discussion in refguide	Major	documentation
HBASE-22566	Call out default compaction throttling for 2.x in Book	Major	documentation
HBASE-22568	[2.1] Upgrade to Jetty 9.3.latest and Jackson 2.9.latest	Major	dependencies
HBASE-21536	Fix completebulkload usage instructions	Trivial	documentation, mapreduce

Release 2.1.5 - Unreleased (as of 2019-05-28)

INCOMPATIBLE CHANGES:

JIRA	Summary	Priority	Component
HBASE-21991	Fix MetaMetrics issues - [Race condition, Faulty remove logic], few improvements	Major	Coprocessors, metrics

NEW FEATURES:

JIRA	Summary	Priority	Component
HBASE-22148	Provide an alternative to CellUtil.setTimestamp	Blocker	API, Coprocessors
HBASE-21815	Make isTrackingMetrics and getMetrics of ScannerContext public	Minor	.

IMPROVEMENTS:

JIRA	Summary	Priority	Component
HBASE-22467	WebUI changes to enable Apache Knox UI proxying	Major	UI
HBASE-22474	Add --mvn-custom-repo parameter to yetus calls	Minor	.
HBASE-20305	Add option to SyncTable that skip deletes on target cluster	Minor	mapreduce
HBASE-21784	Dump replication queue should show list of wal files ordered chronologically	Major	Replication, tooling
HBASE-22384	Formatting issues in administration section of book	Minor	community, documentation
HBASE-21658	Should get the meta replica number from zk instead of config at client side	Critical	Client
HBASE-22392	Remove extra/useless +	Trivial	.
HBASE-20494	Upgrade com.yammer.metrics dependency	Major	dependencies
HBASE-22358	Change rubocop configuration for method length	Minor	community, shell
HBASE-22379	Fix Markdown for “Voting on Release Candidates” in book	Minor	community, documentation
HBASE-22109	Update hbase shaded content checker after guava update in hadoop branch-3.0 to 27.0-jre	Minor	.
HBASE-22087	Update LICENSE/shading for the dependencies from the latest Hadoop trunk	Minor	hadoop3
HBASE-22341	Add explicit guidelines for removing deprecations in book	Major	API, community, documentation
HBASE-22225	Profiler tab on Master/RS UI not working w/o comprehensive message	Minor	UI
HBASE-22291	Fix recovery of recovered.edits files under root dir	Major	.
HBASE-20586	SyncTable tool: Add support for cross-realm remote clusters	Major	mapreduce, Operability, Replication
HBASE-21257	misspelled words.[occured -> occurred]	Trivial	.
HBASE-22188	Make TestSplitMerge more stable	Major	test
HBASE-22097	Modify the description of split command in shell	Trivial	shell

BUG FIXES:

JIRA	Summary	Priority	Component
HBASE-22003	Fix flaky test TestVerifyReplication.testHBase14905	Major	.
HBASE-22441	BucketCache NullPointerException in cacheBlock	Major	BucketCache
HBASE-22462	Should run a ‘mvn install’ at the end of hadoop check in pre commit job	Major	build
HBASE-22440	HRegionServer#getWalGroupsReplicationStatus() throws NPE	Major	regionserver, Replication
HBASE-22289	WAL-based log splitting resubmit threshold may result in a task being stuck forever	Major	.
HBASE-22226	Incorrect level for headings in asciidoc	Trivial	documentation
HBASE-22442	Nightly build is failing with hadoop 3.x	Major	build, hadoop3
HBASE-20970	Update hadoop check versions for hadoop3 in hbase-personality	Major	build
HBASE-22274	Cell size limit check on append should consider cell's previous size.	Minor	.
HBASE-22072	High read/write intensive regions may cause long crash recovery	Major	Performance, Recovery
HBASE-20851	Change rubocop config for max line length of 100	Minor	community, shell
HBASE-21467	Fix flaky test TestCoprocessorClassLoader.testCleanupOldJars	Minor	.
HBASE-22312	Hadoop 3 profile for hbase-shaded-mapreduce should like mapreduce as a provided dependency	Major	mapreduce, shading
HBASE-22314	shaded byo-hadoop client should list needed hadoop modules as provided scope to avoid inclusion of unnecessary transitive depednencies	Major	hadoop2, hadoop3, shading
HBASE-22047	LeaseException in Scan should be retired	Major	Client, Scanners
HBASE-22190	SnapshotFileCache may fail to load the correct snapshot file list when there is an on-going snapshot operation	Blocker	snapshots
HBASE-22354	master never sets abortRequested, and thus abort timeout doesn't work for it	Major	.
HBASE-22350	Rewrite TestClientOperationTimeout so we do not timeout when creating table	Major	test
HBASE-22340	Corrupt KeyValue is silently ignored	Critical	wal
HBASE-22054	Space Quota: Compaction is not working for super user in case of NO_WRITES_COMPACTIONS	Minor	.
HBASE-22236	AsyncNonMetaRegionLocator should not cache HRegionLocation with null location	Major	asyncclient
HBASE-22086	space quota issue: deleting snapshot doesn't update the usage of table	Minor	.
HBASE-22298	branch-2.2 nightly fails “[ForOverride] Method annotated @ForOverride must have protected or package-private visibility”	Major	.
HBASE-22292	PreemptiveFastFailInterceptor clean repeatedFailuresMap issue	Blocker	.
HBASE-22230	REST Server drops connection on long scans	Major	.
HBASE-22200	WALSplitter.hasRecoveredEdits should use same FS instance from WAL region dir	Major	wal
HBASE-22286	License handling incorrectly lists CDDL/GPLv2+CE as safe to not aggregate	Critical	build, community
HBASE-22282	Should deal with error in the callback of RawAsyncHBaseAdmin.splitRegion methods	Major	Admin, asyncclient
HBASE-22278	RawAsyncHBaseAdmin should not use cached region location	Major	Admin, asyncclient
HBASE-22249	Rest Server throws NoClassDefFoundError with Java 11 (run-time)	Major	.
HBASE-22235	OperationStatus.{SUCCESS|FAILURE|NOT_RUN} are not visible to 3rd party coprocessors	Major	Coprocessors
HBASE-22144	MultiRowRangeFilter does not work with reversed scans	Critical	Filters, Scanners
HBASE-22214	[2.x] Backport missing filter improvements	Major	Filters
HBASE-22198	Fix flakey TestAsyncTableGetMultiThreaded	Major	test
HBASE-22185	RAMQueueEntry#writeToCache should freeBlock if any exception encountered instead of the IOException catch block	Major	.
HBASE-22128	Move namespace region then master crashed make deadlock	Critical	amv2
HBASE-22180	Make TestBlockEvictionFromClient.testBlockRefCountAfterSplits more stable	Major	test
HBASE-22179	Fix RawAsyncHBaseAdmin.getCompactionState	Major	Admin, asyncclient
HBASE-22177	Do not recreate IOException in RawAsyncHBaseAdmin.adminCall	Major	Admin, asyncclient
HBASE-22070	Checking restoreDir in RestoreSnapshotHelper	Minor	snapshots
HBASE-20912	Add import order config in dev support for eclipse	Major	.
HBASE-21688	Address WAL filesystem issues	Major	Filesystem Integration, wal
HBASE-22073	/rits.jsp throws an exception if no procedure	Major	UI
HBASE-22123	REST gateway reports Insufficient permissions exceptions as 404 Not Found	Minor	REST
HBASE-21135	Build fails on windows as it fails to parse windows path during license check	Major	build
HBASE-21781	list_deadservers elapsed time is incorrect	Major	shell
HBASE-22100	False positive for error prone warnings in pre commit job	Minor	build
HBASE-22098	Backport HBASE-18667 “Disable error-prone for hbase-protocol-shaded” to branch-2	Major	build
HBASE-20662	Increasing space quota on a violated table does not remove SpaceViolationPolicy.DISABLE enforcement	Major	.
HBASE-21619	Fix warning message caused by incorrect ternary operator evaluation	Trivial	.
HBASE-22045	Mutable range histogram reports incorrect outliers	Major	.
HBASE-21736	Remove the server from online servers before scheduling SCP for it in hbck	Major	hbck2, test
HBASE-22006	Fix branch-2.1 findbugs warning; causes nightly show as failed.	Major	.

TESTS:

JIRA	Summary	Priority	Component
HBASE-21963	Add a script for building and verifying release candidate	Minor	community, scripts

SUB-TASKS:

JIRA	Summary	Priority	Component
HBASE-22419	Backport hbase-personality changes in HBASE-22399 and HBASE-20970 to all active branches	Major	build
HBASE-22445	Add file info when throw exceptions in HFileReaderImpl	Major	.
HBASE-22447	Check refCount before free block in BucketCache	Major	BucketCache
HBASE-22325	AsyncRpcRetryingCaller will not schedule retry if we hit a NotServingRegionException but there is no TableName provided	Major	asyncclient, Client
HBASE-22152	Create a jenkins file for yetus to processing GitHub PR	Major	build
HBASE-22135	AsyncAdmin will not refresh master address	Major	Admin, asyncclient, Client
HBASE-22101	AsyncAdmin.isTableAvailable should not throw TableNotFoundException	Major	Admin, asyncclient, Client
HBASE-22094	Throw TableNotFoundException if table not exists in AsyncAdmin.compact	Major	Admin
HBASE-21998	Move branch-2.1 version from 2.1.4 to 2.1.5-SNAPSHOT	Major	community

OTHER:

JIRA	Summary	Priority	Component
HBASE-22449	https everywhere in Maven metadata	Minor	.
HBASE-22406	skip generating rdoc when building gems in our docker image for running yetus	Critical	build, test
HBASE-22375	Promote AccessChecker to LimitedPrivate(Coprocessor)	Minor	Coprocessors, security
HBASE-22359	Backport of HBASE-21371 misses activation-api license information	Minor	build, community
HBASE-22174	Remove error prone from our precommit javac check	Major	build
HBASE-22231	Remove unused and * imports	Minor	.
HBASE-22304	Fix remaining Checkstyle issues in hbase-endpoint	Trivial	.
HBASE-22020	upgrade to yetus 0.9.0	Major	build, community
HBASE-22192	Delete misc 2.0.5 pom files from branch-2.1	Minor	community
HBASE-22203	Reformat DemoClient.java	Trivial	.
HBASE-22189	Remove usage of StoreFile.getModificationTimeStamp	Trivial	.
HBASE-22131	Delete the patches in hbase-protocol-shaded module	Major	build, Protobufs
HBASE-22099	Backport HBASE-21895 “Error prone upgrade” to branch-2	Major	build
HBASE-22042	Missing @Override annotation for RawAsyncTableImpl.scan	Major	asyncclient, Client

Release 2.1.4 - Unreleased (as of 2019-03-24)

NEW FEATURES:

JIRA	Summary	Priority	Component
HBASE-21926	Profiler servlet	Major	master, Operability, regionserver

IMPROVEMENTS:

JIRA	Summary	Priority	Component
HBASE-22032	KeyValue validation should check for null byte array	Major	.
HBASE-21667	Move to latest ASF Parent POM	Minor	build
HBASE-21871	Support to specify a peer table name in VerifyReplication tool	Major	.
HBASE-21867	Support multi-threads in HFileArchiver	Major	.
HBASE-21932	Use Runtime.getRuntime().halt to terminate regionserver when abort timeout	Major	.
HBASE-21636	Enhance the shell scan command to support missing scanner specifications like ReadType, IsolationLevel etc.	Major	shell

BUG FIXES:

JIRA	Summary	Priority	Component
HBASE-21990	puppycrawl checkstyle dtds 404... moved to sourceforge	Major	build
HBASE-21960	RESTServletContainer not configured for REST Jetty server	Blocker	REST
HBASE-21915	FileLink$FileLinkInputStream doesn't implement CanUnbuffer	Major	Filesystem Integration
HBASE-21983	Should track the scan metrics in AsyncScanSingleRegionRpcRetryingCaller if scan metrics is enabled	Major	asyncclient, Client
HBASE-21980	Fix typo in AbstractTestAsyncTableRegionReplicasRead	Major	test
HBASE-21961	Infinite loop in AsyncNonMetaRegionLocator if there is only one region and we tried to locate before a non empty row	Critical	asyncclient, Client
HBASE-21943	The usage of RegionLocations.mergeRegionLocations is wrong for async client	Critical	asyncclient, Client
HBASE-21942	[UI] requests per second is incorrect in rsgroup page(rsgroup.jsp)	Minor	.
HBASE-21929	The checks at the end of TestRpcClientLeaks are not executed	Major	test
HBASE-21899	Fix missing variables in slf4j Logger	Trivial	logging
HBASE-21910	The nonce implementation is wrong for AsyncTable	Critical	asyncclient, Client
HBASE-21900	Infinite loop in AsyncMetaRegionLocator if we can not get the location for meta	Major	asyncclient, Client
HBASE-21890	Use execute instead of submit to submit a task in RemoteProcedureDispatcher	Critical	proc-v2
HBASE-21889	Use thrift 0.12.0 when build thrift by compile-thrift profile	Major	.
HBASE-21854	Race condition in TestProcedureSkipPersistence	Minor	proc-v2
HBASE-18484	VerifyRep by snapshot does not work when Yarn / SourceHBase / PeerHBase located in different HDFS clusters	Major	Replication

SUB-TASKS:

JIRA	Summary	Priority	Component
HBASE-22066	Add markers to CHANGES.md and RELEASENOTES.md	Major	.
HBASE-22059	2.1 addendum; (check-jar-contents) @ hbase-shaded-check-invariants fails	Major	.
HBASE-22022	nightly fails rat check down in the dev-support/hbase_nightly_source-artifact.sh check	Major	.
HBASE-22025	RAT check fails in nightlies; fails on (old) test data files.	Major	.
HBASE-21999	[DEBUG] Exit if git returns empty revision!	Major	build
HBASE-21997	Fix hbase-rest findbugs ST_WRITE_TO_STATIC_FROM_INSTANCE_METHOD complaint	Major	REST
HBASE-21985	Set version as 2.1.4 in branch-2.1 in prep for first RC	Major	build, release
HBASE-21984	Generate CHANGES.md and RELEASENOTES.md for 2.1.4	Major	documentation, release
HBASE-21934	RemoteProcedureDispatcher should track the ongoing dispatched calls	Blocker	proc-v2
HBASE-21978	Should close AsyncRegistry if we fail to get cluster id when creating AsyncConnection	Major	asyncclient, Client
HBASE-21976	Deal with RetryImmediatelyException for batching request	Major	asyncclient, Client
HBASE-21906	Backport the CallQueueTooBigException related changes in HBASE-21875 to branch-2.1	Major	proc-v2
HBASE-21927	Always fail the locate request when error occur	Major	asyncclient, Client
HBASE-21930	Deal with ScannerResetException when opening region scanner	Major	asyncclient, Client
HBASE-19889	Revert Workaround: Purge User API building from branch-2 so can make a beta-1	Major	website
HBASE-21897	Set version to 2.1.4-SNAPSHOT for branch-2.1	Major	build

OTHER:

JIRA	Summary	Priority	Component
HBASE-21057	upgrade to latest spotbugs	Minor	community, test
HBASE-21884	Fix box/unbox findbugs warning in secure bulk load	Minor	.

Release 2.1.3 - Unreleased (as of 2019-02-10)

INCOMPATIBLE CHANGES:

JIRA	Summary	Priority	Component
HBASE-21727	Simplify documentation around client timeout	Minor	.
HBASE-21684	Throw DNRIOE when connection or rpc client is closed	Major	asyncclient, Client

IMPROVEMENTS:

JIRA	Summary	Priority	Component
HBASE-21201	Support to run VerifyReplication MR tool without peerid	Major	hbase-operator-tools
HBASE-21857	Do not need to check clusterKey if replicationEndpoint is provided when adding a peer	Major	.
HBASE-21816	Print source cluster replication config directory	Trivial	Replication
HBASE-21833	Use NettyAsyncFSWALConfigHelper.setEventLoopConfig to prevent creating too many netty event loop when executing TestHRegion	Minor	test
HBASE-21634	Print error message when user uses unacceptable values for LIMIT while setting quotas.	Minor	.
HBASE-21712	Make submit-patch.py python3 compatible	Minor	tooling
HBASE-21590	Optimize trySkipToNextColumn in StoreScanner a bit	Critical	Performance, Scanners
HBASE-21297	ModifyTableProcedure can throw TNDE instead of IOE in case of REGION_REPLICATION change	Minor	.
HBASE-21694	Add append_peer_exclude_tableCFs and remove_peer_exclude_tableCFs shell commands	Major	.
HBASE-21645	Perform sanity check and disallow table creation/modification with region replication < 1	Minor	.
HBASE-21662	Add append_peer_exclude_namespaces and remove_peer_exclude_namespaces shell commands	Major	.

BUG FIXES:

JIRA	Summary	Priority	Component
HBASE-21862	IPCUtil.wrapException should keep the original exception types for all the connection exceptions	Blocker	.
HBASE-21775	The BufferedMutator doesn't ever refresh region location cache	Major	Client
HBASE-21843	RegionGroupingProvider breaks the meta wal file name pattern which may cause data loss for meta region	Blocker	wal
HBASE-21795	Client application may get stuck (time bound) if a table modify op is called immediately after split op	Critical	amv2
HBASE-21840	TestHRegionWithInMemoryFlush fails with NPE	Blocker	test
HBASE-21644	Modify table procedure runs infinitely for a table having region replication > 1	Critical	Admin
HBASE-21699	Create table failed when using SPLITS_FILE => ‘splits.txt’	Blocker	Client, shell
HBASE-21535	Zombie Master detector is not working	Critical	master
HBASE-21754	ReportRegionStateTransitionRequest should be executed in priority executor	Major	.
HBASE-21475	Put mutation (having TTL set) added via co-processor is retrieved even after TTL expires	Major	Coprocessors
HBASE-21749	RS UI may throw NPE and make rs-status page inaccessible with multiwal and replication	Major	Replication, UI
HBASE-21746	Fix two concern cases in RegionMover	Major	.
HBASE-21732	Should call toUpperCase before using Enum.valueOf in some methods for ColumnFamilyDescriptor	Critical	Client
HBASE-21704	The implementation of DistributedHBaseCluster.getServerHoldingRegion is incorrect	Major	.
HBASE-20917	MetaTableMetrics#stop references uninitialized requestsMap for non-meta region	Major	meta, metrics
HBASE-21639	maxHeapUsage value not read properly from config during EntryBuffers initialization	Minor	.
HBASE-21225	Having RPC & Space quota on a table/Namespace doesn't allow space quota to be removed using ‘NONE’	Major	.
HBASE-20220	[RSGroup] Check if table exists in the cluster before moving it to the specified regionserver group	Major	rsgroup
HBASE-21691	Fix flaky test TestRecoveredEdits	Major	.
HBASE-21683	Reset readsEnabled flag after successfully flushing the primary region	Critical	read replicas
HBASE-21630	[shell] Define ENDKEY == STOPROW (we have ENDROW)	Trivial	shell
HBASE-21547	Precommit uses master flaky list for other branches	Major	test

SUB-TASKS:

JIRA	Summary	Priority	Component
HBASE-21819	Generate CHANGES.md and RELEASENOTES.md for 2.1.3	Major	documentation, release
HBASE-21834	Set version as 2.1.3 in branch-2.1 in prep for first RC	Major	build, release
HBASE-21829	Use FutureUtils.addListener instead of calling whenComplete directly	Major	asyncclient, Client
HBASE-21832	Backport parent “HBASE-21595 Print thread's information and stack traces when RS is aborting forcibly” to branch-2.0/2.1	Minor	regionserver
HBASE-21828	Make sure we do not return CompletionException when locating region	Major	asyncclient, Client
HBASE-21764	Size of in-memory compaction thread pool should be configurable	Major	in-memory-compaction
HBASE-21402	Backport parent “HBASE-21325 Force to terminate regionserver when abort hang in somewhere”	Major	.
HBASE-21734	Some optimization in FilterListWithOR	Major	.
HBASE-21738	Remove all the CSLM#size operation in our memstore because it's an quite time consuming.	Critical	Performance
HBASE-19695	Handle disabled table for async client	Major	asyncclient, Client
HBASE-21711	Remove references to git.apache.org/hbase.git	Critical	.
HBASE-19722	Meta query statistics metrics source	Critical	Coprocessors, meta, metrics, Operability
HBASE-21705	Should treat meta table specially for some methods in AsyncAdmin	Major	Admin, asyncclient, Client
HBASE-21663	Add replica scan support	Major	asyncclient, Client, read replicas
HBASE-21580	Support getting Hbck instance from AsyncConnection	Major	asyncclient, Client, hbck2
HBASE-21698	Move version in branch-2.1 from 2.1.2 to 2.1.3-SNAPSHOT	Major	release
HBASE-21682	Support getting from specific replica	Major	read replicas
HBASE-17356	Add replica get support	Major	Client

OTHER:

JIRA	Summary	Priority	Component
HBASE-21612	Add developer debug options in HBase Config for REST server	Minor	Operability, REST, scripts
HBASE-21853	update copyright notices to 2019	Major	documentation
HBASE-21791	Upgrade thrift dependency to 0.12.0	Blocker	Thrift
HBASE-21715	Do not throw UnsupportedOperationException in ProcedureFuture.get	Major	Client
HBASE-21731	Do not need to use ClusterConnection in IntegrationTestBigLinkedListWithVisibility	Major	.
HBASE-21685	Change repository urls to Gitbox	Critical	.
HBASE-21282	Upgrade to latest jetty 9.2 and 9.3 versions	Major	dependencies

Release 2.1.2 - Unreleased (as of 2018-12-29)

IMPROVEMENTS:

JIRA	Summary	Priority	Component
HBASE-21640	Remove the TODO when increment zero	Major	.
HBASE-21631	list_quotas should print human readable values for LIMIT	Minor	shell
HBASE-21635	Use maven enforcer to ban imports from illegal packages	Major	build
HBASE-21520	TestMultiColumnScanner cost long time when using ROWCOL bloom type	Major	test
HBASE-21590	Optimize trySkipToNextColumn in StoreScanner a bit	Critical	Performance, Scanners
HBASE-21554	Show replication endpoint classname for replication peer on master web UI	Minor	UI
HBASE-21549	Add shell command for serial replication peer	Major	.
HBASE-21567	Allow overriding configs starting up the shell	Major	shell
HBASE-21413	Empty meta log doesn't get split when restart whole cluster	Major	.
HBASE-21524	Unnecessary DEBUG log in ConnectionImplementation#isTableEnabled	Major	Client
HBASE-21511	Remove in progress snapshot check in SnapshotFileCache#getUnreferencedFiles	Minor	.
HBASE-21480	Taking snapshot when RS crashes prevent we bring the regions online	Major	snapshots
HBASE-21485	Add more debug logs for remote procedure execution	Major	proc-v2
HBASE-21388	No need to instantiate MemStoreLAB for master which not carry table	Major	.

BUG FIXES:

JIRA	Summary	Priority	Component
HBASE-21646	Flakey TestTableSnapshotInputFormat; DisableTable not completing...	Major	test
HBASE-21545	NEW_VERSION_BEHAVIOR breaks Get/Scan with specified columns	Major	API
HBASE-21629	draining_servers.rb is broken	Major	scripts
HBASE-21621	Reversed scan does not return expected number of rows	Critical	scan
HBASE-21620	Problem in scan query when using more than one column prefix filter in some cases.	Major	scan
HBASE-21618	Scan with the same startRow(inclusive=true) and stopRow(inclusive=false) returns one result	Critical	Client
HBASE-21610	numOpenConnections metric is set to -1 when zero server channel exist	Minor	metrics
HBASE-21498	Master OOM when SplitTableRegionProcedure new CacheConfig and instantiate a new BlockCache	Major	.
HBASE-21592	quota.addGetResult(r) throw NPE	Major	.
HBASE-21589	TestCleanupMetaWAL fails	Blocker	test, wal
HBASE-21582	If call HBaseAdmin#snapshotAsync but forget call isSnapshotFinished, then SnapshotHFileCleaner will skip to run every time	Major	.
HBASE-21568	Disable use of BlockCache for LoadIncrementalHFiles	Major	Client
HBASE-21453	Convert ReadOnlyZKClient to DEBUG instead of INFO	Major	logging, Zookeeper
HBASE-21559	The RestoreSnapshotFromClientTestBase related UT are flaky	Major	.
HBASE-21551	Memory leak when use scan with STREAM at server side	Blocker	regionserver
HBASE-21479	Individual tests in TestHRegionReplayEvents class are failing	Major	.
HBASE-21518	TestMasterFailoverWithProcedures is flaky	Major	.
HBASE-21504	If enable FIFOCompactionPolicy, a compaction may write a “empty” hfile whose maxTimeStamp is long max. This kind of hfile will never be archived.	Critical	Compaction
HBASE-21300	Fix the wrong reference file path when restoring snapshots for tables with MOB columns	Major	.
HBASE-21492	CellCodec Written To WAL Before It's Verified	Critical	wal
HBASE-21507	Compaction failed when execute AbstractMultiFileWriter.beforeShipped() method	Major	regionserver
HBASE-21387	Race condition surrounding in progress snapshot handling in snapshot cache leads to loss of snapshot files	Major	snapshots
HBASE-21503	Replication normal source can get stuck due potential race conditions between source wal reader and wal provider initialization threads.	Blocker	Replication
HBASE-21440	Assign procedure on the crashed server is not properly interrupted	Major	.
HBASE-21468	separate workers for meta table is not working	Major	.
HBASE-21445	CopyTable by bulkload will write hfile into yarn's HDFS	Major	mapreduce
HBASE-21437	Bypassed procedure throw IllegalArgumentException when its state is WAITING_TIMEOUT	Major	.
HBASE-21439	StochasticLoadBalancer RegionLoads aren’t being used in RegionLoad cost functions	Major	Balancer
HBASE-20604	ProtobufLogReader#readNext can incorrectly loop to the same position in the stream until the the WAL is rolled	Critical	Replication, wal
HBASE-21247	Custom Meta WAL Provider doesn't default to custom WAL Provider whose configuration value is outside the enums in Providers	Major	wal
HBASE-21438	TestAdmin2#testGetProcedures fails due to FailedProcedure inaccessible	Major	.
HBASE-21425	2.1.1 fails to start over 1.x data; namespace not assigned	Critical	amv2
HBASE-21407	Resolve NPE in backup Master UI	Minor	UI
HBASE-21424	Change flakies and nightlies so scheduled less often	Major	build
HBASE-21417	Pre commit build is broken due to surefire plugin crashes	Critical	build
HBASE-21371	Hbase unable to compile against Hadoop trunk (3.3.0-SNAPSHOT) due to license error	Major	.
HBASE-21356	bulkLoadHFile API should ensure that rs has the source hfile's write permission	Major	.
HBASE-21055	NullPointerException when balanceOverall() but server balance info is null	Major	Balancer

TESTS:

JIRA	Summary	Priority	Component
HBASE-20136	TestKeyValue misses ClassRule and Category annotations	Minor	.

SUB-TASKS:

JIRA	Summary	Priority	Component
HBASE-21401	Sanity check when constructing the KeyValue	Critical	regionserver
HBASE-21570	Add write buffer periodic flush support for AsyncBufferedMutator	Major	asyncclient, Client
HBASE-21566	Release notes and changes for 2.0.4RC0 and 2.1.2RC0	Major	release
HBASE-21490	WALProcedure may remove proc wal files still with active procedures	Major	proc-v2
HBASE-21377	Add debug log for procedure stack id related operations	Major	proc-v2
HBASE-21473	RowIndexSeekerV1 may return cell with extra two \x00\x00 bytes which has no tags	Major	.
HBASE-21423	Procedures for meta table/region should be able to execute in separate workers	Major	.
HBASE-21376	Add some verbose log to MasterProcedureScheduler	Major	logging, proc-v2
HBASE-21442	Update branch-2.1 for next development cycle	Major	build
HBASE-21421	Do not kill RS if reportOnlineRegions fails	Major	.
HBASE-21314	The implementation of BitSetNode is not efficient	Major	proc-v2
HBASE-21395	Abort split/merge procedure if there is a table procedure of the same table going on	Major	.
HBASE-21351	The force update thread may have race with PE worker when the procedure is rolling back	Critical	proc-v2
HBASE-21237	Use CompatRemoteProcedureResolver to dispatch open/close region requests to RS	Blocker	.
HBASE-21322	Add a scheduleServerCrashProcedure() API to HbckService	Major	hbck2
HBASE-21375	Revisit the lock and queue implementation in MasterProcedureScheduler	Major	proc-v2

OTHER:

JIRA	Summary	Priority	Component
HBASE-18735	Provide a fast mechanism for shutting down mini cluster	Major	.
HBASE-21517	Move the getTableRegionForRow method from HMaster to TestMaster	Major	test

Release 2.1.1 - Released 2018-10-31

INCOMPATIBLE CHANGES:

JIRA	Summary	Priority	Component
HBASE-21158	Empty qualifier cell should not be returned if it does not match QualifierFilter	Critical	Filters
HBASE-21223	[amv2] Remove abort_procedure from shell	Critical	amv2, hbck2, shell
HBASE-20884	Replace usage of our Base64 implementation with java.util.Base64	Major	.

NEW FEATURES:

JIRA	Summary	Priority	Component
HBASE-20649	Validate HFiles do not have PREFIX_TREE DataBlockEncoding	Minor	Operability, tooling

IMPROVEMENTS:

JIRA	Summary	Priority	Component
HBASE-21385	HTable.delete request use rpc call directly instead of AsyncProcess	Major	.
HBASE-21145	Backport “HBASE-21126 Add ability for HBase Canary to ignore a configurable number of ZooKeeper down nodes” to branch-2.1	Minor	canary, Zookeeper
HBASE-21263	Mention compression algorithm along with other storefile details	Minor	.
HBASE-21290	No need to instantiate BlockCache for master which not carry table	Major	.
HBASE-21251	Refactor RegionMover	Major	Operability
HBASE-21303	[shell] clear_deadservers with no args fails	Major	.
HBASE-21299	List counts of actual region states in master UI tables section	Major	UI
HBASE-21289	Remove the log “‘hbase.regionserver.maxlogs’ was deprecated.” in AbstractFSWAL	Minor	.
HBASE-21185	WALPrettyPrinter: Additional useful info to be printed by wal printer tool, for debugability purposes	Minor	Operability
HBASE-21103	nightly test cache of yetus install needs to be more thorough in verification	Major	test
HBASE-20857	JMX - add Balancer status = enabled / disabled	Major	API, master, metrics, REST, tooling, Usability
HBASE-21164	reportForDuty to spew less log if master is initializing	Minor	regionserver
HBASE-20307	LoadTestTool prints too much zookeeper logging	Minor	tooling
HBASE-21155	Save on a few log strings and some churn in wal splitter by skipping out early if no logs in dir	Trivial	.
HBASE-21157	Split TableInputFormatScan to individual tests	Minor	test
HBASE-21153	Shaded client jars should always build in relevant phase to avoid confusion	Major	build
HBASE-20749	Upgrade our use of checkstyle to 8.6+	Minor	build, community
HBASE-20387	flaky infrastructure should work for all branches	Critical	test
HBASE-20469	Directory used for sidelining old recovered edits files should be made configurable	Minor	.
HBASE-20979	Flaky test reporting should specify what JSON it needs and handle HTTP errors	Minor	test
HBASE-20985	add two attributes when we do normalization	Major	.
HBASE-20965	Separate region server report requests to new handlers	Major	Performance
HBASE-20986	Separate the config of block size when we do log splitting and write Hlog	Major	.
HBASE-20856	PITA having to set WAL provider in two places	Minor	Operability, wal
HBASE-20935	HStore.removeCompactedFiles should log in case it is unable to delete a file	Minor	.
HBASE-20873	Update doc for Endpoint-based Export	Minor	documentation

BUG FIXES:

JIRA	Summary	Priority	Component
HBASE-21380	TestRSGroups failing	Major	.
HBASE-21391	RefreshPeerProcedure should also wait master initialized before executing	Major	Replication
HBASE-21342	FileSystem in use may get closed by other bulk load call in secure bulkLoad	Major	.
HBASE-21349	Cluster is going down but CatalogJanitor and Normalizer try to run and fail noisely	Minor	.
HBASE-21355	HStore's storeSize is calculated repeatedly which causing the confusing region split	Blocker	regionserver
HBASE-21334	TestMergeTableRegionsProcedure is flakey	Major	amv2, proc-v2, test
HBASE-21178	[BC break] : Get and Scan operation with a custom converter_class not working	Critical	shell
HBASE-21242	[amv2] Miscellaneous minor log and assign procedure create improvements	Minor	amv2, Operability
HBASE-21348	Fix failing TestRegionBypass, broke by HBASE-21291	Major	hbck2
HBASE-21345	[hbck2] Allow version check to proceed even though master is ‘initializing’.	Major	hbck2
HBASE-21200	Memstore flush doesn't finish because of seekToPreviousRow() in memstore scanner.	Critical	Scanners
HBASE-21292	IdLock.getLockEntry() may hang if interrupted	Major	.
HBASE-21335	Change the default wait time of HBCK2 tool	Critical	.
HBASE-21291	Add a test for bypassing stuck state-machine procedures	Major	.
HBASE-21327	Fix minor logging issue where we don't report servername if no associated SCP	Trivial	amv2
HBASE-21320	[canary] Cleanup of usage and add commentary	Major	canary
HBASE-21266	Not running balancer because processing dead regionservers, but empty dead rs list	Major	.
HBASE-21260	The whole balancer plans might be aborted if there are more than one plans to move a same region	Major	Balancer, master
HBASE-21271	[amv2] Don't throw UnsupportedOperationException when rollback called on Assign/Unassign; spiral of death	Major	amv2
HBASE-21259	[amv2] Revived deadservers; recreated serverstatenode	Critical	amv2
HBASE-21280	Add anchors for each heading in UI	Trivial	UI, Usability
HBASE-20764	build broken when latest commit is gpg signed	Critical	build
HBASE-21213	[hbck2] bypass leaves behind state in RegionStates when assign/unassign	Major	amv2, hbck2
HBASE-18549	Unclaimed replication queues can go undetected	Critical	Replication
HBASE-21248	Implement exponential backoff when retrying for ModifyPeerProcedure	Major	proc-v2, Replication
HBASE-21196	HTableMultiplexer clears the meta cache after every put operation	Critical	Performance
HBASE-19418	RANGE_OF_DELAY in PeriodicMemstoreFlusher should be configurable.	Minor	.
HBASE-18451	PeriodicMemstoreFlusher should inspect the queue before adding a delayed flush request	Major	regionserver
HBASE-21228	Memory leak since AbstractFSWAL caches Thread object and never clean later	Critical	wal
HBASE-21232	Show table state in Tables view on Master home page	Major	Operability, UI
HBASE-21212	Wrong flush time when update flush metric	Minor	.
HBASE-21208	Bytes#toShort doesn't work without unsafe	Critical	.
HBASE-20704	Sometimes some compacted storefiles are not archived on region close	Critical	Compaction
HBASE-21203	TestZKMainServer#testCommandLineWorks won't pass with default 4lw whitelist	Minor	test, Zookeeper
HBASE-21206	Scan with batch size may return incomplete cells	Critical	scan
HBASE-21182	Failed to execute start-hbase.sh	Major	.
HBASE-21179	Fix the number of actions in responseTooSlow log	Major	logging, rpc
HBASE-21174	[REST] Failed to parse empty qualifier in TableResource#getScanResource	Major	REST
HBASE-21181	Use the same filesystem for wal archive directory and wal directory	Major	.
HBASE-21144	AssignmentManager.waitForAssignment is not stable	Major	amv2, test
HBASE-21143	Update findbugs-maven-plugin to 3.0.4	Major	pom
HBASE-21171	[amv2] Tool to parse a directory of MasterProcWALs standalone	Major	amv2, test
HBASE-21001	ReplicationObserver fails to load in HBase 2.0.0	Major	.
HBASE-20741	Split of a region with replicas creates all daughter regions and its replica in same server	Major	read replicas
HBASE-21127	TableRecordReader need to handle cursor result too	Major	.
HBASE-20892	[UI] Start / End keys are empty on table.jsp	Major	.
HBASE-21132	return wrong result in rest multiget	Major	.
HBASE-20940	HStore.cansplit should not allow split to happen if it has references	Major	.
HBASE-20968	list_procedures_test fails due to no matching regex	Major	shell, test
HBASE-21030	Correct javadoc for append operation	Minor	documentation
HBASE-21088	HStoreFile should be closed in HStore#hasReferences	Major	.
HBASE-21120	MoveRegionProcedure makes no progress; goes to STUCK	Major	amv2
HBASE-20772	Controlled shutdown fills Master log with the disturbing message "No matching procedure found for rit=OPEN, location=ZZZZ, table=YYYYY, region=XXXX transition to CLOSED	Major	logging
HBASE-20978	[amv2] Worker terminating UNNATURALLY during MoveRegionProcedure	Critical	amv2
HBASE-21078	[amv2] CODE-BUG NPE in RTP doing Unassign	Major	amv2
HBASE-21113	Apply the branch-2 version of HBASE-21095, The timeout retry logic for several procedures are broken after master restarts	Major	amv2
HBASE-21101	Remove the waitUntilAllRegionsAssigned call after split in TestTruncateTableProcedure	Major	test
HBASE-20614	REST scan API with incorrect filter text file throws HTTP 503 Service Unavailable error	Minor	REST
HBASE-21041	Memstore's heap size will be decreased to minus zero after flush	Major	.
HBASE-21031	Memory leak if replay edits failed during region opening	Major	.
HBASE-21032	ScanResponses contain only one cell each	Major	Performance, Scanners
HBASE-20705	Having RPC Quota on a table prevents Space quota to be recreated/removed	Major	.
HBASE-21058	Nightly tests for branches 1 fail to build ref guide	Major	documentation
HBASE-21074	JDK7 branches need to pass “-Dhttps.protocols=TLSv1.2” to maven when building	Major	build, community, test
HBASE-21062	WALFactory has misleading notion of “default”	Major	wal
HBASE-21047	Object creation of StoreFileScanner thru constructor and close may leave refCount to -1	Major	.
HBASE-21005	Maven site configuration causes downstream projects to get a directory named ${project.basedir}	Minor	build
HBASE-21029	Miscount of memstore's heap/offheap size if same cell was put	Major	.
HBASE-20981	Rollback stateCount accounting thrown-off when exception out of rollbackState	Major	amv2
HBASE-21018	RS crashed because AsyncFS was unable to update HDFS data encryption key	Critical	wal
HBASE-21007	Memory leak in HBase rest server	Critical	REST
HBASE-20538	Upgrade our hadoop versions to 2.7.7 and 3.0.3	Critical	java, security
HBASE-20565	ColumnRangeFilter combined with ColumnPaginationFilter can produce incorrect result since 1.4	Major	Filters
HBASE-20870	Wrong HBase root dir in ITBLL's Search Tool	Minor	integration tests
HBASE-20869	Endpoint-based Export use incorrect user to write to destination	Major	Coprocessors
HBASE-20865	CreateTableProcedure is stuck in retry loop in CREATE_TABLE_WRITE_FS_LAYOUT state	Major	amv2
HBASE-19572	RegionMover should use the configured default port number and not the one from HConstants	Major	.
HBASE-20697	Can't cache All region locations of the specify table by calling table.getRegionLocator().getAllRegionLocations()	Major	meta

TESTS:

JIRA	Summary	Priority	Component
HBASE-21261	Add log4j.properties for hbase-rsgroup tests	Trivial	.
HBASE-21097	Flush pressure assertion may fail in testFlushThroughputTuning	Major	regionserver
HBASE-21161	Enable the test added in HBASE-20741 that was removed accidentally	Minor	.
HBASE-21076	TestTableResource fails with NPE	Major	REST, test
HBASE-20907	Fix Intermittent failure on TestProcedurePriority	Major	.
HBASE-20838	Include hbase-server in precommit test if CommonFSUtils is changed	Major	.

SUB-TASKS:

JIRA	Summary	Priority	Component
HBASE-21398	Copy down docs, amend to suite branch-2.1, and then commit	Major	.
HBASE-21397	Set version to 2.1.1 on branch-2.1 in prep for first RC	Major	.
HBASE-20973	ArrayIndexOutOfBoundsException when rolling back procedure	Critical	amv2
HBASE-21384	Procedure with holdlock=false should not be restored lock when restarts	Blocker	.
HBASE-21364	Procedure holds the lock should put to front of the queue after restart	Blocker	.
HBASE-21215	Figure how to invoke hbck2; make it easy to find	Major	amv2, hbck2
HBASE-21372	Set hbase.assignment.maximum.attempts to Long.MAX	Major	amv2
HBASE-21363	Rewrite the buildingHoldCleanupTracker method in WALProcedureStore	Major	proc-v2
HBASE-21338	[balancer] If balancer is an ill-fit for cluster size, it gives little indication	Major	Balancer, Operability
HBASE-21192	Add HOW-TO repair damaged AMv2.	Major	amv2
HBASE-21073	“Maintenance mode” master	Major	amv2, hbck2, master
HBASE-21354	Procedure may be deleted improperly during master restarts resulting in ‘Corrupt’	Major	.
HBASE-21321	Backport HBASE-21278 to branch-2.1 and branch-2.0	Critical	.
HBASE-21336	Simplify the implementation of WALProcedureMap	Major	proc-v2
HBASE-21323	Should not skip force updating for a sub procedure even if it has been finished	Major	proc-v2
HBASE-21075	Confirm that we can (rolling) upgrade from 2.0.x and 2.1.x to 2.2.x after HBASE-20881	Blocker	amv2, proc-v2
HBASE-21288	HostingServer in UnassignProcedure is not accurate	Major	amv2, Balancer
HBASE-20716	Unsafe access cleanup	Critical	Performance
HBASE-21310	Split TestCloneSnapshotFromClient	Major	test
HBASE-21311	Split TestRestoreSnapshotFromClient	Major	test
HBASE-21315	The getActiveMinProcId and getActiveMaxProcId of BitSetNode are incorrect if there are no active procedure	Major	.
HBASE-21309	Increase the waiting timeout for TestProcedurePriority	Major	test
HBASE-21254	Need to find a way to limit the number of proc wal files	Critical	proc-v2
HBASE-21250	Refactor WALProcedureStore and add more comments for better understanding the implementation	Major	proc-v2
HBASE-19275	TestSnapshotFileCache never worked properly	Major	.
HBASE-21249	Add jitter for ProcedureUtil.getBackoffTimeMs	Major	proc-v2
HBASE-21233	Allow the procedure implementation to skip persistence of the state after a execution	Major	Performance, proc-v2
HBASE-21214	[hbck2] setTableState just sets hbase:meta state, not in-memory state	Major	amv2, hbck2
HBASE-21210	Add bypassProcedure() API to HBCK2	Major	hbase-operator-tools, hbck2
HBASE-21023	Add bypassProcedureToCompletion() API to HbckService	Major	hbck2
HBASE-21156	[hbck2] Queue an assign of hbase:meta and bulk assign/unassign	Critical	hbck2
HBASE-21169	Initiate hbck2 tool in hbase-operator-tools repo	Major	hbck2
HBASE-21191	Add a holding-pattern if no assign for meta or namespace (Can happen if masterprocwals have been cleared).	Major	amv2
HBASE-21172	Reimplement the retry backoff logic for ReopenTableRegionsProcedure	Major	amv2, proc-v2
HBASE-21189	flaky job should gather machine stats	Minor	test
HBASE-21190	Log files and count of entries in each as we load from the MasterProcWAL store	Major	amv2
HBASE-21083	Introduce a mechanism to bypass the execution of a stuck procedure	Major	amv2
HBASE-20941	Create and implement HbckService in master	Major	.
HBASE-21072	Block out HBCK1 in hbase2	Major	hbck
HBASE-21093	Move TestCreateTableProcedure.testMRegions to a separated file	Major	test
HBASE-21094	Remove the explicit timeout config for TestTruncateTableProcedure	Major	test
HBASE-21050	Exclusive lock may be held by a SUCCESS state procedure forever	Major	amv2
HBASE-21044	Disable flakey TestShell list_procedures	Major	test
HBASE-20975	Lock may not be taken or released while rolling back procedure	Major	amv2
HBASE-21025	Add cache for TableStateManager	Major	.
HBASE-21012	Revert the change of serializing TimeRangeTracker	Critical	.
HBASE-20813	Remove RPC quotas when the associated table/Namespace is dropped off	Minor	.
HBASE-20885	Remove entry for RPC quota from hbase:quota when RPC quota is removed.	Minor	.
HBASE-20893	Data loss if splitting region while ServerCrashProcedure executing	Major	.
HBASE-19369	HBase Should use Builder Pattern to Create Log Files while using WAL on Erasure Coding	Major	.
HBASE-20939	There will be race when we call suspendIfNotReady and then throw ProcedureSuspendedException	Critical	amv2
HBASE-20921	Possible NPE in ReopenTableRegionsProcedure	Major	amv2
HBASE-20938	Set version to 2.1.1-SNAPSHOT for branch-2.1	Major	build
HBASE-20867	RS may get killed while master restarts	Major	.
HBASE-20878	Data loss if merging regions while ServerCrashProcedure executing	Critical	amv2
HBASE-20846	Restore procedure locks when master restarts	Major	.
HBASE-20914	Trim Master memory usage	Major	master
HBASE-20853	Polish “Add defaults to Table Interface so Implementors don't have to”	Major	API
HBASE-20875	MemStoreLABImp::copyIntoCell uses 7% CPU when writing	Major	Performance
HBASE-20860	Merged region's RIT state may not be cleaned after master restart	Major	.
HBASE-20847	The parent procedure of RegionTransitionProcedure may not have the table lock	Major	proc-v2, Region Assignment

OTHER:

JIRA	Summary	Priority	Component
HBASE-20152	[AMv2] DisableTableProcedure versus ServerCrashProcedure	Major	amv2
HBASE-20540	[umbrella] Hadoop 3 compatibility	Major	.
HBASE-21294	[2.1] Update bouncycastle dependency.	Major	dependencies, test
HBASE-21198	Exclude dependency on net.minidev:json-smart	Major	.
HBASE-21114	website should have a copy of 2.1 release docs	Major	community, documentation
HBASE-21287	JVMClusterUtil Master initialization wait time not configurable	Major	test
HBASE-21168	BloomFilterUtil uses hardcoded randomness	Trivial	.
HBASE-21125	Backport ‘HBASE-20942 Improve RpcServer TRACE logging’ to branch-2.1	Major	Operability
HBASE-20482	Print a link to the ref guide chapter for the shell during startup	Minor	documentation, shell

Release 2.1.0 - Released 2018-07-22

INCOMPATIBLE CHANGES:

JIRA	Summary	Priority	Component
HBASE-20691	Storage policy should allow deferring to HDFS	Blocker	Filesystem Integration, wal
HBASE-20270	Turn off command help that follows all errors in shell	Major	shell
HBASE-20501	Change the Hadoop minimum version to 2.7.1	Blocker	community, documentation
HBASE-20406	HBase Thrift HTTP - Shouldn't handle TRACE/OPTIONS methods	Major	security, Thrift
HBASE-20159	Support using separate ZK quorums for client	Major	Client, Operability, Zookeeper
HBASE-20148	Make serial replication as a option for a peer instead of a table	Major	Replication

NEW FEATURES:

JIRA	Summary	Priority	Component
HBASE-20833	Modify pre-upgrade coprocessor validator to support table level coprocessors	Major	Coprocessors
HBASE-15809	Basic Replication WebUI	Critical	Replication, UI
HBASE-19735	Create a minimal “client” tarball installation	Major	build, Client
HBASE-20656	Validate pre-2.0 coprocessors against HBase 2.0+	Major	tooling
HBASE-20592	Create a tool to verify tables do not have prefix tree encoding	Minor	Operability, tooling
HBASE-20046	Reconsider the implementation for serial replication	Major	Replication
HBASE-19397	Design procedures for ReplicationManager to notify peer change event from master	Major	proc-v2, Replication

IMPROVEMENTS:

JIRA	Summary	Priority	Component
HBASE-20806	Split style journal for flushes and compactions	Minor	.
HBASE-20474	Show non-RPC tasks on master/regionserver Web UI by default	Major	UI
HBASE-20826	Truncate responseInfo attributes on RpcServer WARN messages	Major	rpc
HBASE-20450	Provide metrics for number of total active, priority and replication rpc handlers	Major	metrics
HBASE-20810	Include the procedure id in the exception message in HBaseAdmin for better debugging	Major	Admin, proc-v2
HBASE-20040	Master UI should include “Cluster Key” needed to use the cluster as a replication sink	Minor	Replication, Usability
HBASE-20095	Redesign single instance pool in CleanerChore	Critical	.
HBASE-19164	Avoid UUID.randomUUID in tests	Major	test
HBASE-20739	Add priority for SCP	Major	Recovery
HBASE-20737	put collection into ArrayList instead of addAll function	Trivial	.
HBASE-20695	Implement table level RegionServer replication metrics	Minor	metrics
HBASE-20733	QABot should run checkstyle tests if the checkstyle configs change	Minor	build, community
HBASE-20625	refactor some WALCellCodec related code	Minor	wal
HBASE-19852	HBase Thrift 1 server SPNEGO Improvements	Major	Thrift
HBASE-20579	Improve snapshot manifest copy in ExportSnapshot	Minor	mapreduce
HBASE-20444	Improve version comparison logic for HBase specific version string and add unit tests	Major	util
HBASE-20594	provide utility to compare old and new descriptors	Major	.
HBASE-20640	TestQuotaGlobalsSettingsBypass missing test category and ClassRule	Critical	test
HBASE-20478	move import checks from hbaseanti to checkstyle	Minor	test
HBASE-20548	Master fails to startup on large clusters, refreshing block distribution	Major	.
HBASE-20488	PE tool prints full name in help message	Minor	shell
HBASE-20567	Pass both old and new descriptors to pre/post hooks of modify operations for table and namespace	Major	.
HBASE-20545	Improve performance of BaseLoadBalancer.retainAssignment	Major	Balancer
HBASE-16191	Add stop_regionserver and stop_master to shell	Major	.
HBASE-20536	Make TestRegionServerAccounting stable and it should not use absolute number	Minor	.
HBASE-20523	PE tool should support configuring client side buffering sizes	Minor	.
HBASE-20527	Remove unused code in MetaTableAccessor	Trivial	.
HBASE-20507	Do not need to call recoverLease on the broken file when we fail to create a wal writer	Major	wal
HBASE-20484	Remove the unnecessary autoboxing in FilterListBase	Trivial	.
HBASE-20327	When qualifier is not specified, append and incr operation do not work (shell)	Minor	shell
HBASE-20389	Move website building flags into a profile	Minor	build, website
HBASE-20379	shadedjars yetus plugin should add a footer link	Major	test
HBASE-20243	[Shell] Add shell command to create a new table by cloning the existent table	Minor	shell
HBASE-20286	Improving shell command compaction_state	Minor	shell
HBASE-19488	Move to using Apache commons CollectionUtils	Trivial	.
HBASE-20197	Review of ByteBufferWriterOutputStream.java	Minor	.
HBASE-20047	AuthenticationTokenIdentifier should provide a toString	Minor	Usability
HBASE-19024	Configurable default durability for synchronous WAL	Critical	wal
HBASE-19389	Limit concurrency of put with dense (hundreds) columns to prevent write handler exhausted	Critical	Performance
HBASE-20186	Improve RSGroupBasedLoadBalancer#balanceCluster() to be more efficient when calculating cluster state for each rsgroup	Minor	rsgroup
HBASE-19449	Minor logging change in HFileArchiver	Trivial	.
HBASE-20120	Remove some unused classes/ java files from hbase-server	Minor	.

BUG FIXES:

JIRA	Summary	Priority	Component
HBASE-20854	Wrong retries number in RpcRetryingCaller's log message	Minor	Client, logging
HBASE-20784	Will lose the SNAPSHOT suffix if we get the version of RS from ServerManager	Minor	master, UI
HBASE-20822	TestAsyncNonMetaRegionLocator is flakey	Major	asyncclient
HBASE-20808	Wrong shutdown order between Chores and ChoreService	Minor	.
HBASE-20789	TestBucketCache#testCacheBlockNextBlockMetadataMissing is flaky	Major	.
HBASE-20829	Remove the addFront assertion in MasterProcedureScheduler.doAdd	Major	Replication
HBASE-20825	Fix pre and post hooks of CloneSnapshot and RestoreSnapshot for Access checks	Major	security
HBASE-20812	Add defaults to Table Interface so implementors don't have to	Major	.
HBASE-20817	Infinite loop when executing ReopenTableRegionsProcedure	Blocker	Region Assignment
HBASE-20792	info:servername and info:sn inconsistent for OPEN region	Blocker	Region Assignment
HBASE-20769	getSplits() has a out of bounds problem in TableSnapshotInputFormatImpl	Major	.
HBASE-20732	Shutdown scan pool when master is stopped.	Minor	.
HBASE-20785	NPE getting metrics in PE testing scans	Major	Performance
HBASE-20795	Allow option in BBKVComparator.compare to do comparison without sequence id	Major	.
HBASE-20777	RpcConnection could still remain opened after we shutdown the NettyRpcServer	Major	rpc
HBASE-20403	Prefetch sometimes doesn't work with encrypted file system	Major	.
HBASE-20635	Support to convert the shaded user permission proto to client user permission object	Major	.
HBASE-20778	Make it so WALPE runs on DFS	Major	test
HBASE-20775	TestMultiParallel is flakey	Major	Region Assignment
HBASE-20752	Make sure the regions are truly reopened after ReopenTableRegionsProcedure	Major	proc-v2
HBASE-18622	Mitigate API compatibility concerns between branch-1 and branch-2	Blocker	API
HBASE-20767	Always close hbaseAdmin along with connection in HBTU	Major	test
HBASE-20642	IntegrationTestDDLMasterFailover throws 'InvalidFamilyOperationException	Major	.
HBASE-20742	Always create WAL directory for region server	Major	wal
HBASE-20708	Remove the usage of RecoverMetaProcedure in master startup	Blocker	proc-v2, Region Assignment
HBASE-20723	Custom hbase.wal.dir results in data loss because we write recovered edits into a different place than where the recovering region server looks for them	Critical	Recovery, wal
HBASE-20681	IntegrationTestDriver fails after HADOOP-15406 due to missing hamcrest-core	Major	integration tests
HBASE-20561	The way we stop a ReplicationSource may cause the RS down	Major	Replication
HBASE-19377	Compatibility checker complaining about hash collisions	Major	community
HBASE-20689	Docker fails to install rubocop for precommit	Blocker	build
HBASE-20707	Move MissingSwitchDefault check from checkstyle to error-prone	Major	build
HBASE-20699	QuotaCache should cancel the QuotaRefresherChore service inside its stop()	Major	.
HBASE-20590	REST Java client is not able to negotiate with the server in the secure mode	Critical	REST, security
HBASE-20683	Incorrect return value for PreUpgradeValidator	Critical	.
HBASE-20684	org.apache.hadoop.hbase.client.Scan#setStopRow javadoc uses incorrect method	Trivial	Client, documentation
HBASE-20678	NPE in ReplicationSourceManager#NodeFailoverWorker	Minor	.
HBASE-20670	NPE in HMaster#isInMaintenanceMode	Minor	.
HBASE-20634	Reopen region while server crash can cause the procedure to be stuck	Critical	.
HBASE-12882	Log level for org.apache.hadoop.hbase package should be configurable	Major	.
HBASE-20668	Avoid permission change if ExportSnapshot's copy fails	Major	.
HBASE-18116	Replication source in-memory accounting should not include bulk transfer hfiles	Major	Replication
HBASE-20602	hbase.master.quota.observer.ignore property seems to be not taking effect	Minor	documentation
HBASE-20664	Variable shared across multiple threads	Major	.
HBASE-20659	Implement a reopen table regions procedure	Major	.
HBASE-20582	Bump up JRuby version because of some reported vulnerabilities	Major	dependencies, shell
HBASE-20533	Fix the flaky TestAssignmentManagerMetrics	Major	.
HBASE-20597	Use a lock to serialize access to a shared reference to ZooKeeperWatcher in HBaseReplicationEndpoint	Minor	Replication
HBASE-20633	Dropping a table containing a disable violation policy fails to remove the quota upon table delete	Major	.
HBASE-20645	Fix security_available method in security.rb	Major	.
HBASE-20612	TestReplicationKillSlaveRSWithSeparateOldWALs sometimes fail because it uses an expired cluster conn	Major	.
HBASE-20648	HBASE-19364 “Truncate_preserve fails with table when replica region > 1” for master branch	Major	.
HBASE-20588	Space quota change after quota violation doesn't seem to take in effect	Major	regionserver
HBASE-20616	TruncateTableProcedure is stuck in retry loop in TRUNCATE_TABLE_CREATE_FS_LAYOUT state	Major	amv2
HBASE-20638	nightly source artifact testing should fail the stage if it's going to report an error on jira	Major	test
HBASE-20624	Race in ReplicationSource which causes walEntryFilter being null when creating new shipper	Major	Replication
HBASE-20601	Add multiPut support and other miscellaneous to PE	Minor	tooling
HBASE-20627	Relocate RS Group pre/post hooks from RSGroupAdminServer to RSGroupAdminEndpoint	Major	.
HBASE-20591	nightly job doesn't respect maven options	Critical	test
HBASE-20560	Revisit the TestReplicationDroppedTables ut	Major	.
HBASE-20571	JMXJsonServlet generates invalid JSON if it has NaN in metrics	Major	UI
HBASE-20585	Need to clear peer map when clearing MasterProcedureScheduler	Major	proc-v2
HBASE-20457	Return immediately for a scan rpc call when we want to switch from pread to stream	Major	scan
HBASE-20447	Only fail cacheBlock if block collisions aren't related to next block metadata	Major	BlockCache, BucketCache
HBASE-20544	downstream HBaseTestingUtility fails with invalid port	Blocker	test
HBASE-20004	Client is not able to execute REST queries in a secure cluster	Minor	REST, security
HBASE-20475	Fix the flaky TestReplicationDroppedTables unit test.	Major	.
HBASE-20554	“WALs outstanding” message from CleanerChore is noisy	Trivial	.
HBASE-20204	Add locking to RefreshFileConnections in BucketCache	Major	BucketCache
HBASE-20485	Copy constructor of Scan doesn't copy the readType and replicaId	Minor	.
HBASE-20543	Fix the flaky TestThriftHttpServer	Major	.
HBASE-20521	TableOutputFormat.checkOutputSpecs conf checking sequence cause pig script run fail	Major	mapreduce
HBASE-20500	[rsgroup] should keep at least one server in default group	Major	rsgroup
HBASE-20517	Fix PerformanceEvaluation ‘column’ parameter	Major	test
HBASE-20524	Need to clear metrics when ReplicationSourceManager refresh replication sources	Minor	.
HBASE-20476	Open sequence number could go backwards in AssignProcedure	Major	Region Assignment
HBASE-20506	Add doc and test for unused RetryCounter, useful-looking utility	Minor	.
HBASE-20492	UnassignProcedure is stuck in retry loop on region stuck in OPENING state	Critical	amv2
HBASE-20497	The getRecoveredQueueStartPos always return 0 in RecoveredReplicationSourceShipper	Major	Replication
HBASE-18842	The hbase shell clone_snaphost command returns bad error message	Minor	shell
HBASE-20466	Consistently use override mechanism for exempt classes in CoprocessClassloader	Major	Coprocessors
HBASE-20006	TestRestoreSnapshotFromClientWithRegionReplicas is flakey	Critical	read replicas
HBASE-18059	The scanner order for memstore scanners are wrong	Critical	regionserver, scan, Scanners
HBASE-20404	Ugly cleanerchore complaint that dir is not empty	Major	master
HBASE-20419	Fix potential NPE in ZKUtil#listChildrenAndWatchForNewChildren callers	Major	.
HBASE-20364	nightly job gives old results or no results for stages that timeout on SCM	Critical	test
HBASE-20335	nightly jobs no longer contain machine information	Critical	test
HBASE-20338	WALProcedureStore#recoverLease() should have fixed sleeps for retrying rollWriter()	Major	.
HBASE-20356	make skipping protoc possible	Critical	dependencies, thirdparty
HBASE-15291	FileSystem not closed in secure bulkLoad	Major	.
HBASE-20068	Hadoopcheck project health check uses default maven repo instead of yetus managed ones	Major	community, test
HBASE-20361	Non-successive TableInputSplits may wrongly be merged by auto balancing feature	Major	mapreduce
HBASE-20260	Purge old content from the book for branch-2/master	Critical	documentation
HBASE-20058	improper quoting in presplitting command docs	Minor	documentation
HBASE-19923	Reset peer state and config when refresh replication source failed	Major	Replication
HBASE-19748	TestRegionReplicaFailover and TestRegionReplicaReplicationEndpoint UT hangs	Major	.

TESTS:

JIRA	Summary	Priority	Component
HBASE-20667	Rename TestGlobalThrottler to TestReplicationGlobalThrottler	Trivial	.
HBASE-20646	TestWALProcedureStoreOnHDFS failing on branch-1	Trivial	.
HBASE-20505	PE should support multi column family read and write cases	Minor	.
HBASE-20513	Collect and emit ScanMetrics in PerformanceEvaluation	Minor	test
HBASE-20414	TestLockProcedure#testMultipleLocks may fail on slow machine	Major	.

SUB-TASKS:

JIRA	Summary	Priority	Component
HBASE-20831	Copy master doc into branch-2.1 and edit to make it suit 2.1.0	Blocker	documentation
HBASE-20839	Fallback to FSHLog if we can not instantiated AsyncFSWAL when user does not specify AsyncFSWAL explicitly	Blocker	wal
HBASE-20244	NoSuchMethodException when retrieving private method decryptEncryptedDataEncryptionKey from DFSClient	Blocker	wal
HBASE-20193	Basic Replication Web UI - Regionserver	Critical	Replication, Usability
HBASE-20489	Update Reference Guide that CLUSTER_KEY value is present on the Master UI info page.	Minor	documentation
HBASE-19722	Meta query statistics metrics source	Major	.
HBASE-20781	Save recalculating families in a WALEdit batch of Cells	Major	Performance
HBASE-20194	Basic Replication WebUI - Master	Critical	Replication, Usability
HBASE-20780	ServerRpcConnection logging cleanup	Major	logging, Performance
HBASE-19764	Fix Checkstyle errors in hbase-endpoint	Minor	.
HBASE-20710	extra cloneFamily() in Mutation.add(Cell)	Minor	regionserver
HBASE-18569	Add prefetch support for async region locator	Major	asyncclient, Client
HBASE-20706	[hack] Don't add known not-OPEN regions in reopen phase of MTP	Critical	amv2
HBASE-20334	add a test that expressly uses both our shaded client and the one from hadoop 3	Major	hadoop3, shading
HBASE-20615	emphasize use of shaded client jars when they're present in an install	Major	build, Client, Usability
HBASE-20333	break up shaded client into one with no Hadoop and one that's standalone	Critical	shading
HBASE-20332	shaded mapreduce module shouldn't include hadoop	Critical	mapreduce, shading
HBASE-20722	Make RegionServerTracker only depend on children changed event	Major	.
HBASE-20700	Move meta region when server crash can cause the procedure to be stuck	Critical	master, proc-v2, Region Assignment
HBASE-20628	SegmentScanner does over-comparing when one flushing	Critical	Performance
HBASE-19761	Fix Checkstyle errors in hbase-zookeeper	Minor	.
HBASE-19724	Fix Checkstyle errors in hbase-hadoop2-compat	Minor	.
HBASE-20518	Need to serialize the enabled field for UpdatePeerConfigProcedure	Major	Replication
HBASE-20481	Replicate entries from same region serially in ReplicationEndpoint for serial replication	Major	.
HBASE-20378	Provide a hbck option to cleanup replication barrier for a table	Major	.
HBASE-20128	Add new UTs which extends the old replication UTs but set replication scope to SERIAL	Major	.
HBASE-20417	Do not read wal entries when peer is disabled	Major	Replication
HBASE-20294	Also cleanup last pushed sequence id in ReplicationBarrierCleaner	Major	Replication
HBASE-20377	Deal with table in enabling and disabling state when modifying serial replication peer	Major	Replication
HBASE-20367	Write a replication barrier for regions when disabling a table	Major	Replication
HBASE-20296	Remove last pushed sequence ids when removing tables from a peer	Major	Replication
HBASE-20285	Delete all last pushed sequence ids when removing a peer or removing the serial flag for a peer	Major	Replication
HBASE-20138	Find a way to deal with the conflicts when updating replication position	Major	Replication
HBASE-20127	Add UT for serial replication after failover	Major	Replication, test
HBASE-20271	ReplicationSourceWALReader.switched should use the file name instead of the path object directly	Major	Replication
HBASE-20227	Add UT for ReplicationUtils.contains method	Major	Replication, test
HBASE-20147	Serial replication will be stuck if we create a table with serial replication but add it to a peer after there are region moves	Major	.
HBASE-20116	Optimize the region last pushed sequence id layout on zk	Major	Replication
HBASE-20242	The open sequence number will grow if we fail to open a region after writing the max sequence id file	Major	.
HBASE-20155	update branch-2 version to 2.1.0-SNAPSHOT	Major	build, community
HBASE-20206	WALEntryStream should not switch WAL file silently	Major	Replication
HBASE-20117	Cleanup the unused replication barriers in meta table	Major	master, Replication
HBASE-20165	Shell command to make a normal peer to be a serial replication peer	Major	.
HBASE-20167	Optimize the implementation of ReplicationSourceWALReader	Major	Replication
HBASE-20125	Add UT for serial replication after region split and merge	Major	Replication
HBASE-20129	Add UT for serial replication checker	Major	Replication
HBASE-20115	Reimplement serial replication based on the new replication storage layer	Major	Replication
HBASE-20050	Reimplement updateReplicationPositions logic in serial replication based on the newly introduced replication storage layer	Major	.
HBASE-20082	Fix findbugs errors only on master which are introduced by HBASE-19397	Major	findbugs
HBASE-19936	Introduce a new base class for replication peer procedure	Major	.
HBASE-19719	Fix checkstyle issues	Major	proc-v2, Replication
HBASE-19711	TestReplicationAdmin.testConcurrentPeerOperations hangs	Major	proc-v2
HBASE-19707	Race in start and terminate of a replication source after we async start replicatione endpoint	Major	proc-v2, Replication
HBASE-19636	All rs should already start work with the new peer change when replication peer procedure is finished	Major	proc-v2, Replication
HBASE-19634	Add permission check for executeProcedures in AccessController	Major	proc-v2, Replication
HBASE-19697	Remove TestReplicationAdminUsingProcedure	Major	proc-v2, Replication
HBASE-19661	Replace ReplicationStateZKBase with ZKReplicationStorageBase	Major	proc-v2, Replication
HBASE-19687	Move the logic in ReplicationZKNodeCleaner to ReplicationChecker and remove ReplicationZKNodeCleanerChore	Major	proc-v2, Replication
HBASE-19544	Add UTs for testing concurrent modifications on replication peer	Major	proc-v2, Replication, test
HBASE-19686	Use KeyLocker instead of ReentrantLock in PeerProcedureHandlerImpl	Major	proc-v2, Replication
HBASE-19623	Create replication endpoint asynchronously when adding a replication source	Major	proc-v2, Replication
HBASE-19633	Clean up the replication queues in the postPeerModification stage when removing a peer	Major	proc-v2, Replication
HBASE-19622	Reimplement ReplicationPeers with the new replication storage interface	Major	proc-v2, Replication
HBASE-19635	Introduce a thread at RS side to call reportProcedureDone	Major	proc-v2
HBASE-19617	Remove ReplicationQueues, use ReplicationQueueStorage directly	Major	Replication
HBASE-19642	Fix locking for peer modification procedure	Critical	proc-v2, Replication
HBASE-19592	Add UTs to test retry on update zk failure	Major	proc-v2, Replication
HBASE-19630	Add peer cluster key check when add new replication peer	Major	proc-v2, Replication
HBASE-19573	Rewrite ReplicationPeer with the new replication storage interface	Major	proc-v2, Replication
HBASE-19579	Add peer lock test for shell command list_locks	Major	proc-v2, Replication
HBASE-19599	Remove ReplicationQueuesClient, use ReplicationQueueStorage directly	Major	Replication
HBASE-19543	Abstract a replication storage interface to extract the zk specific code	Major	proc-v2, Replication
HBASE-19525	RS side changes for moving peer modification from zk watcher to procedure	Major	proc-v2, Replication
HBASE-19580	Use slf4j instead of commons-logging in new, just-added Peer Procedure classes	Major	proc-v2, Replication
HBASE-19520	Add UTs for the new lock type PEER	Major	proc-v2
HBASE-19564	Procedure id is missing in the response of peer related operations	Major	proc-v2, Replication
HBASE-19536	Client side changes for moving peer modification from zk watcher to procedure	Major	Replication
HBASE-19524	Master side changes for moving peer modification from zk watcher to procedure	Major	proc-v2, Replication
HBASE-19216	Implement a general framework to execute remote procedure on RS	Major	proc-v2, Replication

OTHER:

JIRA	Summary	Priority	Component
HBASE-19997	[rolling upgrade] 1.x => 2.x	Blocker	.
HBASE-20360	Further optimization for serial replication	Major	Replication
HBASE-20862	Address 2.1.0 Compatibility Report Issues	Blocker	compatibility
HBASE-20665	“Already cached block XXX” message should be DEBUG	Minor	BlockCache
HBASE-20677	Backport test of HBASE-20566 ‘Creating a system table after enabling rsgroup feature puts region into RIT’ to branch-2	Major	.
HBASE-19475	Extend backporting strategy in documentation	Trivial	documentation
HBASE-20595	Remove the concept of ‘special tables’ from rsgroups	Major	Region Assignment, rsgroup
HBASE-20415	branches-2 don't need maven-scala-plugin	Major	build
HBASE-20112	Include test results from nightly hadoop3 tests in jenkins test results	Critical	test
HBASE-17918	document serial replication	Critical	documentation, Replication
HBASE-19737	Manage a HBASE-19397-branch-2 branch and merge it to branch-2	Major	proc-v2, Replication