| HADOOP-9977 | Hadoop services won't start with different keypass and keystorepass when https is enabled | Major | security | Yesha Vora | Chris Nauroth |
| HADOOP-9961 | versions of a few transitive dependencies diverged between hadoop subprojects | Minor | build | Roman Shaposhnik | Roman Shaposhnik |
| HADOOP-9960 | Upgrade Jersey version to 1.9 | Blocker | . | Brock Noland | Karthik Kambatla |
| HADOOP-9958 | Add old constructor back to DelegationTokenInformation to unbreak downstream builds | Major | . | Andrew Wang | Andrew Wang |
| HADOOP-9932 | Improper synchronization in RetryCache | Blocker | . | Kihwal Lee | Kihwal Lee |
| HADOOP-9924 | FileUtil.createJarWithClassPath() does not generate relative classpath correctly | Major | fs | shanyu zhao | shanyu zhao |
| HADOOP-9916 | Race condition in ipc.Client causes TestIPC timeout | Minor | . | Binglin Chang | Binglin Chang |
| HADOOP-9910 | proxy server start and stop documentation wrong | Minor | . | André Kelpe | |
| HADOOP-9906 | Move HAZKUtil to o.a.h.util.ZKUtil and make inner-classes public | Minor | ha | Karthik Kambatla | Karthik Kambatla |
| HADOOP-9899 | Remove the debug message added by HADOOP-8855 | Minor | security | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
| HADOOP-9880 | SASL changes from HADOOP-9421 breaks Secure HA NN | Blocker | . | Kihwal Lee | Daryn Sharp |
| HADOOP-9868 | Server must not advertise kerberos realm | Blocker | ipc | Daryn Sharp | Daryn Sharp |
| HADOOP-9858 | Remove unused private RawLocalFileSystem#execCommand method from branch-2. | Trivial | fs | Chris Nauroth | Chris Nauroth |
| HADOOP-9857 | Tests block and sometimes timeout on Windows due to invalid entropy source. | Major | build, test | Chris Nauroth | Chris Nauroth |
| HADOOP-9806 | PortmapInterface should check if the procedure is out-of-range | Major | nfs | Brandon Li | Brandon Li |
| HADOOP-9801 | Configuration#writeXml uses platform defaulting encoding, which may mishandle multi-byte characters. | Major | conf | Chris Nauroth | Chris Nauroth |
| HADOOP-9774 | RawLocalFileSystem.listStatus() return absolute paths when input path is relative on Windows | Major | fs | shanyu zhao | shanyu zhao |
| HADOOP-9768 | chown and chgrp reject users and groups with spaces on platforms where spaces are otherwise acceptable | Major | fs | Chris Nauroth | Chris Nauroth |
| HADOOP-9757 | Har metadata cache can grow without limit | Major | fs | Jason Lowe | Cristina L. Abad |
| HADOOP-9557 | hadoop-client excludes commons-httpclient | Major | build | Lohit Vijayarenu | Lohit Vijayarenu |
| HADOOP-9435 | Support building the JNI code against the IBM JVM | Major | build | Tian Hong Wang | Tian Hong Wang |
| HADOOP-9381 | Document dfs cp -f option | Trivial | . | Keegan Witt | Keegan Witt |
| HADOOP-9315 | Port HADOOP-9249 hadoop-maven-plugins Clover fix to branch-2 to fix build failures | Major | build | Dennis Y | Chris Nauroth |
| HDFS-5231 | Fix broken links in the document of HDFS Federation | Minor | . | Haohui Mai | Haohui Mai |
| HDFS-5219 | Add configuration keys for retry policy in WebHDFSFileSystem | Major | webhdfs | Haohui Mai | Haohui Mai |
| HDFS-5192 | NameNode may fail to start when dfs.client.test.drop.namenode.response.number is set | Minor | . | Jing Zhao | Jing Zhao |
| HDFS-5159 | Secondary NameNode fails to checkpoint if error occurs downloading edits on first checkpoint | Major | namenode | Aaron T. Myers | Aaron T. Myers |
| HDFS-5150 | Allow per NN SPN for internal SPNEGO. | Blocker | . | Kihwal Lee | Kihwal Lee |
| HDFS-5140 | Too many safemode monitor threads being created in the standby namenode causing it to fail with out of memory error | Blocker | ha | Arpit Gupta | Jing Zhao |
| HDFS-5132 | Deadlock in NameNode between SafeModeMonitor#run and DatanodeManager#handleHeartbeat | Blocker | namenode | Arpit Gupta | Kihwal Lee |
| HDFS-5124 | DelegationTokenSecretManager#retrievePassword can cause deadlock in NameNode | Blocker | namenode | Deepesh Khandelwal | Daryn Sharp |
| HDFS-5111 | Remove duplicated error message for snapshot commands when processing invalid arguments | Minor | snapshots | Jing Zhao | Jing Zhao |
| HDFS-5106 | TestDatanodeBlockScanner fails on Windows due to incorrect path format | Minor | test | Chuan Liu | Chuan Liu |
| HDFS-5105 | TestFsck fails on Windows | Minor | . | Chuan Liu | Chuan Liu |
| HDFS-5103 | TestDirectoryScanner fails on Windows | Minor | test | Chuan Liu | Chuan Liu |
| HDFS-5102 | Snapshot names should not be allowed to contain slash characters | Major | snapshots | Aaron T. Myers | Jing Zhao |
| HDFS-5100 | TestNamenodeRetryCache fails on Windows due to incorrect cleanup | Minor | test | Chuan Liu | Chuan Liu |
| HDFS-5099 | Namenode#copyEditLogSegmentsToSharedDir should close EditLogInputStreams upon finishing | Major | namenode | Chuan Liu | Chuan Liu |
| HDFS-5091 | Support for spnego keytab separate from the JournalNode keytab for secure HA | Minor | . | Jing Zhao | Jing Zhao |
| HDFS-5080 | BootstrapStandby not working with QJM when the existing NN is active | Major | ha, qjm | Jing Zhao | Jing Zhao |
| HDFS-5077 | NPE in FSNamesystem.commitBlockSynchronization() | Major | namenode | Konstantin Shvachko | Plamen Jeliazkov |
| HDFS-5055 | nn fails to download checkpointed image from snn in some setups | Blocker | namenode | Allen Wittenauer | Vinayakumar B |
| HDFS-5047 | Supress logging of full stack trace of quota and lease exceptions | Major | namenode | Kihwal Lee | Robert Parker |
| HDFS-5043 | For HdfsFileStatus, set default value of childrenNum to -1 instead of 0 to avoid confusing applications | Major | . | Brandon Li | Brandon Li |
| HDFS-5028 | LeaseRenewer throw java.util.ConcurrentModificationException when timeout | Major | . | zhaoyunjiong | zhaoyunjiong |
| HDFS-4993 | fsck can fail if a file is renamed or deleted | Major | . | Kihwal Lee | Robert Parker |
| HDFS-4898 | BlockPlacementPolicyWithNodeGroup.chooseRemoteRack() fails to properly fallback to local rack | Minor | namenode | Eric Sirianni | Tsz Wo Nicholas Sze |
| HDFS-4680 | Audit logging of delegation tokens for MR tracing | Major | namenode, security | Andrew Wang | Andrew Wang |
| HDFS-4632 | globStatus using backslash for escaping does not work on Windows | Major | test | Chris Nauroth | Chuan Liu |
| HDFS-4594 | WebHDFS open sets Content-Length header to what is specified by length parameter rather than how much data is actually returned. | Minor | webhdfs | Arpit Gupta | Chris Nauroth |
| HDFS-2994 | If lease soft limit is recovered successfully the append can fail | Major | . | Todd Lipcon | Tao Luo |
| MAPREDUCE-5497 | ‘5s sleep’ in MRAppMaster.shutDownJob is only needed before stopping ClientService | Major | . | Jian He | Jian He |
| MAPREDUCE-5493 | In-memory map outputs can be leaked after shuffle completes | Blocker | mrv2 | Jason Lowe | Jason Lowe |
| MAPREDUCE-5483 | revert MAPREDUCE-5357 | Major | distcp | Alejandro Abdelnur | Robert Kanter |
| MAPREDUCE-5475 | MRClientService does not verify ACLs properly | Blocker | mr-am, mrv2 | Jason Lowe | Jason Lowe |
| MAPREDUCE-5470 | LocalJobRunner does not work on Windows. | Major | . | Chris Nauroth | Sandy Ryza |
| MAPREDUCE-5468 | AM recovery does not work for map only jobs | Blocker | . | Yesha Vora | Vinod Kumar Vavilapalli |
| MAPREDUCE-5454 | TestDFSIO fails intermittently on JDK7 | Major | test | Karthik Kambatla | Karthik Kambatla |
| MAPREDUCE-5446 | TestJobHistoryEvents and TestJobHistoryParsing have race conditions | Major | mrv2, test | Jason Lowe | Jason Lowe |
| MAPREDUCE-5440 | TestCopyCommitter Fails on JDK7 | Major | mrv2 | Robert Parker | Robert Parker |
| MAPREDUCE-5428 | HistoryFileManager doesn't stop threads when service is stopped | Major | jobhistoryserver, mrv2 | Jason Lowe | Karthik Kambatla |
| MAPREDUCE-5425 | Junit in TestJobHistoryServer failing in jdk 7 | Major | jobhistoryserver | Ashwin Shankar | Robert Parker |
| MAPREDUCE-5414 | TestTaskAttempt fails jdk7 with NullPointerException | Major | test | Nemon Lou | Nemon Lou |
| MAPREDUCE-5385 | JobContext cache files api are broken | Blocker | . | Omkar Vinit Joshi | Omkar Vinit Joshi |
| MAPREDUCE-5358 | MRAppMaster throws invalid transitions for JobImpl | Major | mr-am | Devaraj K | Devaraj K |
| MAPREDUCE-5317 | Stale files left behind for failed jobs | Major | mrv2 | Ravi Prakash | Ravi Prakash |
| MAPREDUCE-5251 | Reducer should not implicate map attempt if it has insufficient space to fetch map output | Major | mrv2 | Jason Lowe | Ashwin Shankar |
| MAPREDUCE-5164 | command “mapred job” and “mapred queue” omit HADOOP_CLIENT_OPTS | Major | . | Nemon Lou | Nemon Lou |
| MAPREDUCE-5020 | Compile failure with JDK8 | Major | client | Trevor Robinson | Trevor Robinson |
| MAPREDUCE-5001 | LocalJobRunner has race condition resulting in job failures | Major | . | Brock Noland | Sandy Ryza |
| MAPREDUCE-3193 | FileInputFormat doesn't read files recursively in the input path dir | Major | mrv1, mrv2 | Ramgopal N | Devaraj K |
| YARN-1194 | TestContainerLogsPage fails with native builds | Minor | nodemanager | Roman Shaposhnik | Roman Shaposhnik |
| YARN-1189 | NMTokenSecretManagerInNM is not being told when applications have finished | Blocker | . | Jason Lowe | Omkar Vinit Joshi |
| YARN-1176 | RM web services ClusterMetricsInfo total nodes doesn't include unhealthy nodes | Critical | resourcemanager | Thomas Graves | Jonathan Eagles |
| YARN-1152 | Invalid key to HMAC computation error when getting application report for completed app attempt | Blocker | resourcemanager | Jason Lowe | Jason Lowe |
| YARN-1144 | Unmanaged AMs registering a tracking URI should not be proxy-fied | Critical | resourcemanager | Alejandro Abdelnur | Alejandro Abdelnur |
| YARN-1124 | By default yarn application -list should display all the applications in a state other than FINISHED / FAILED | Blocker | . | Omkar Vinit Joshi | Xuan Gong |
| YARN-1120 | Make ApplicationConstants.Environment.USER definition OS neutral | Minor | . | Chuan Liu | Chuan Liu |
| YARN-1107 | Job submitted with Delegation token in secured environment causes RM to fail during RM restart | Blocker | resourcemanager | Arpit Gupta | Omkar Vinit Joshi |
| YARN-1101 | Active nodes can be decremented below 0 | Major | resourcemanager | Robert Parker | Robert Parker |
| YARN-1094 | RM restart throws Null pointer Exception in Secure Env | Blocker | . | Yesha Vora | Vinod Kumar Vavilapalli |
| YARN-1093 | Corrections to Fair Scheduler documentation | Major | documentation | Wing Yew Poon | |
| YARN-1083 | ResourceManager should fail when yarn.nm.liveness-monitor.expiry-interval-ms is set less than heartbeat interval | Major | resourcemanager | Yesha Vora | Zhijie Shen |
| YARN-1082 | Secure RM with recovery enabled and rm state store on hdfs fails with gss exception | Blocker | resourcemanager | Arpit Gupta | Vinod Kumar Vavilapalli |
| YARN-1078 | TestNodeManagerResync, TestNodeManagerShutdown, and TestNodeStatusUpdater fail on Windows | Minor | . | Chuan Liu | Chuan Liu |
| YARN-1077 | TestContainerLaunch fails on Windows | Minor | . | Chuan Liu | Chuan Liu |
| YARN-1025 | ResourceManager and NodeManager do not load native libraries on Windows. | Major | nodemanager, resourcemanager | Chris Nauroth | Chris Nauroth |
| YARN-1008 | MiniYARNCluster with multiple nodemanagers, all nodes have same key for allocations | Major | nodemanager | Alejandro Abdelnur | Alejandro Abdelnur |
| YARN-1006 | Nodes list web page on the RM web UI is broken | Major | . | Jian He | Xuan Gong |
| YARN-994 | HeartBeat thread in AMRMClientAsync does not handle runtime exception correctly | Major | . | Xuan Gong | Xuan Gong |
| YARN-981 | YARN/MR2/Job-history /logs link does not have correct content | Major | . | Xuan Gong | Jian He |
| YARN-966 | The thread of ContainerLaunch#call will fail without any signal if getLocalizedResources() is called when the container is not at LOCALIZED | Major | . | Zhijie Shen | Zhijie Shen |
| YARN-957 | Capacity Scheduler tries to reserve the memory more than what node manager reports. | Blocker | . | Omkar Vinit Joshi | Omkar Vinit Joshi |
| YARN-948 | RM should validate the release container list before actually releasing them | Major | . | Omkar Vinit Joshi | Omkar Vinit Joshi |
| YARN-942 | In Fair Scheduler documentation, inconsistency on which properties have prefix | Major | scheduler | Sandy Ryza | Akira AJISAKA |
| YARN-903 | DistributedShell throwing Errors in logs after successfull completion | Major | applications/distributed-shell | Abhishek Kapoor | Omkar Vinit Joshi |
| YARN-881 | Priority#compareTo method seems to be wrong. | Major | . | Jian He | Jian He |
| YARN-643 | WHY appToken is removed both in BaseFinalTransition and AMUnregisteredTransition AND clientToken is removed in FinalTransition and not BaseFinalTransition | Major | . | Jian He | Xuan Gong |
| YARN-602 | NodeManager should mandatorily set some Environment variables into every containers that it launches | Major | . | Xuan Gong | Kenji Kikushima |
| YARN-337 | RM handles killed application tracking URL poorly | Major | resourcemanager | Jason Lowe | Jason Lowe |
| YARN-107 | ClientRMService.forceKillApplication() should handle the non-RUNNING applications properly | Major | resourcemanager | Devaraj K | Xuan Gong |