| HADOOP-9255 | relnotes.py missing last jira | Critical | scripts | Thomas Graves | Thomas Graves |
| HADOOP-9242 | Duplicate surefire plugin config in hadoop-common | Major | test | Andrey Klochkov | Andrey Klochkov |
| HADOOP-9181 | Set daemon flag for HttpServer's QueuedThreadPool | Major | . | Liang Xie | Liang Xie |
| HADOOP-9169 | Bring branch-0.23 ExitUtil up to same level as branch-2 | Major | . | Robert Joseph Evans | Robert Joseph Evans |
| HADOOP-9152 | HDFS can report negative DFS Used on clusters with very small amounts of data | Minor | fs | Brock Noland | Brock Noland |
| HADOOP-9135 | JniBasedUnixGroupsMappingWithFallback should log at debug rather than info during fallback | Trivial | security | Colin Patrick McCabe | Colin Patrick McCabe |
| HADOOP-9108 | Add a method to clear terminateCalled to ExitUtil for test cases | Major | util | Kihwal Lee | Kihwal Lee |
| HADOOP-9105 | FsShell -moveFromLocal erroneously fails | Major | fs | Daryn Sharp | Daryn Sharp |
| HADOOP-9097 | Maven RAT plugin is not checking all source files | Critical | build | Tom White | Thomas Graves |
| HADOOP-9072 | Hadoop-Common-0.23-Build Fails to build in Jenkins | Major | . | Robert Parker | Robert Parker |
| HADOOP-7868 | Hadoop native fails to compile when default linker option is -Wl,--as-needed | Major | native | James Page | Trevor Robinson |
| HDFS-4426 | Secondary namenode shuts down immediately after startup | Blocker | namenode | Jason Lowe | Arpit Agarwal |
| HDFS-4385 | Maven RAT plugin is not checking all source files | Critical | build | Thomas Graves | Thomas Graves |
| HDFS-4315 | DNs with multiple BPs can have BPOfferServices fail to start due to unsynchronized map access | Major | datanode | Aaron T. Myers | Aaron T. Myers |
| HDFS-4270 | Replications of the highest priority should be allowed to choose a source datanode that has reached its max replication limit | Minor | namenode | Derek Dagit | Derek Dagit |
| HDFS-4254 | testAllEditsDirsFailOnFlush makes subsequent test cases fail (0.23.6 only) | Major | test | Kihwal Lee | Kihwal Lee |
| HDFS-4242 | Map.Entry is incorrectly used in LeaseManager | Major | namenode | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze |
| HDFS-4233 | NN keeps serving even after no journals started while rolling edit | Blocker | namenode | Kihwal Lee | Kihwal Lee |
| HDFS-4232 | NN fails to write a fsimage with stale leases | Blocker | namenode | Daryn Sharp | Daryn Sharp |
| HDFS-4186 | logSync() is called with the write lock held while releasing lease | Critical | namenode | Kihwal Lee | Kihwal Lee |
| HDFS-2757 | Cannot read a local block that's being written to when using the local read short circuit | Major | . | Jean-Daniel Cryans | Jean-Daniel Cryans |
| MAPREDUCE-4934 | Maven RAT plugin is not checking all source files | Critical | build | Thomas Graves | Thomas Graves |
| MAPREDUCE-4925 | The pentomino option parser may be buggy | Major | examples | Karthik Kambatla | Karthik Kambatla |
| MAPREDUCE-4921 | JobClient should acquire HS token with RM principal | Blocker | client | Daryn Sharp | Daryn Sharp |
| MAPREDUCE-4913 | TestMRAppMaster#testMRAppMasterMissingStaging occasionally exits | Major | mr-am | Jason Lowe | Jason Lowe |
| MAPREDUCE-4902 | Fix typo “receievd” should be “received” in log output | Trivial | . | Albert Chu | Albert Chu |
| MAPREDUCE-4895 | Fix compilation failure of org.apache.hadoop.mapred.gridmix.TestResourceUsageEmulators | Major | . | Dennis Y | Dennis Y |
| MAPREDUCE-4894 | Renewal / cancellation of JobHistory tokens | Blocker | jobhistoryserver, mrv2 | Siddharth Seth | Siddharth Seth |
| MAPREDUCE-4890 | Invalid TaskImpl state transitions when task fails while speculating | Critical | mr-am | Jason Lowe | Jason Lowe |
| MAPREDUCE-4861 | Cleanup: Remove unused mapreduce.security.token.DelegationTokenRenewal | Major | . | Karthik Kambatla | Karthik Kambatla |
| MAPREDUCE-4856 | TestJobOutputCommitter uses same directory as TestJobCleanup | Major | test | Sandy Ryza | Sandy Ryza |
| MAPREDUCE-4848 | TaskAttemptContext cast error during AM recovery | Major | mr-am | Jason Lowe | Jerry Chen |
| MAPREDUCE-4842 | Shuffle race can hang reducer | Blocker | mrv2 | Jason Lowe | Mariappan Asokan |
| MAPREDUCE-4836 | Elapsed time for running tasks on AM web UI tasks page is 0 | Major | . | Ravi Prakash | Ravi Prakash |
| MAPREDUCE-4833 | Task can get stuck in FAIL_CONTAINER_CLEANUP | Critical | applicationmaster, mrv2 | Robert Joseph Evans | Robert Parker |
| MAPREDUCE-4832 | MR AM can get in a split brain situation | Critical | applicationmaster | Robert Joseph Evans | Jason Lowe |
| MAPREDUCE-4825 | JobImpl.finished doesn't expect ERROR as a final job state | Major | mr-am | Jason Lowe | Jason Lowe |
| MAPREDUCE-4819 | AM can rerun job after reporting final job status to the client | Blocker | mr-am | Jason Lowe | Bikas Saha |
| MAPREDUCE-4817 | Hardcoded task ping timeout kills tasks localizing large amounts of data | Critical | applicationmaster, mr-am | Jason Lowe | Thomas Graves |
| MAPREDUCE-4813 | AM timing out during job commit | Critical | applicationmaster | Jason Lowe | Jason Lowe |
| MAPREDUCE-4678 | Running the Pentomino example with defaults throws java.lang.NegativeArraySizeException | Minor | examples | Chris McConnell | Chris McConnell |
| MAPREDUCE-4279 | getClusterStatus() fails with null pointer exception when running jobs in local mode | Major | jobtracker | Rahul Jain | Devaraj K |
| YARN-354 | WebAppProxyServer exits immediately after startup | Blocker | . | Liang Xie | Liang Xie |
| YARN-334 | Maven RAT plugin is not checking all source files | Critical | . | Thomas Graves | Thomas Graves |
| YARN-325 | RM CapacityScheduler can deadlock when getQueueInfo() is called and a container is completing | Blocker | capacityscheduler | Jason Lowe | Arun C Murthy |
| YARN-320 | RM should always be able to renew its own tokens | Blocker | resourcemanager | Daryn Sharp | Daryn Sharp |
| YARN-293 | Node Manager leaks LocalizerRunner object for every Container | Critical | nodemanager | Devaraj K | Robert Joseph Evans |
| YARN-266 | RM and JHS Web UIs are blank because AppsBlock is not escaping string properly | Critical | resourcemanager | Ravi Prakash | Ravi Prakash |
| YARN-258 | RM web page UI shows Invalid Date for start and finish times | Major | resourcemanager | Ravi Prakash | Ravi Prakash |
| YARN-251 | Proxy URI generation fails for blank tracking URIs | Major | resourcemanager | Tom White | Tom White |
| YARN-225 | Proxy Link in RM UI thows NPE in Secure mode | Critical | resourcemanager | Devaraj K | Devaraj K |
| YARN-223 | Change processTree interface to work better with native code | Critical | . | Radim Kolar | Radim Kolar |
| YARN-170 | NodeManager stop() gets called twice on shutdown | Major | nodemanager | Sandy Ryza | Sandy Ryza |
| YARN-72 | NM should handle cleaning up containers when it shuts down | Major | nodemanager | Hitesh Shah | Sandy Ryza |