| HADOOP-9025 | org.apache.hadoop.tools.TestCopyListing failing | Major | . | Robert Joseph Evans | Jonathan Eagles |
| HADOOP-9022 | Hadoop distcp tool fails to copy file if -m 0 specified | Major | . | Haiyang Jiang | Jonathan Eagles |
| HADOOP-8986 | Server$Call object is never released after it is sent | Critical | ipc | Robert Joseph Evans | Robert Joseph Evans |
| HADOOP-8962 | RawLocalFileSystem.listStatus fails when a child filename contains a colon | Critical | fs | Jason Lowe | Jason Lowe |
| HADOOP-8906 | paths with multiple globs are unreliable | Critical | fs | Daryn Sharp | Daryn Sharp |
| HADOOP-8819 | Should use && instead of & in a few places in FTPFileSystem,FTPInputStream,S3InputStream,ViewFileSystem,ViewFs | Major | fs | Brandon Li | Brandon Li |
| HADOOP-8791 | rm “Only deletes non empty directory and files.” | Major | documentation | Bertrand Dechoux | Jing Zhao |
| HADOOP-8775 | MR2 distcp permits non-positive value to -bandwidth option which causes job never to complete | Major | . | Sandy Ryza | Sandy Ryza |
| HADOOP-8386 | hadoop script doesn't work if ‘cd’ prints to stdout (default behavior in Ubuntu) | Major | scripts | Christopher Berner | Christopher Berner |
| HDFS-4186 | logSync() is called with the write lock held while releasing lease | Critical | namenode | Kihwal Lee | Kihwal Lee |
| HDFS-4182 | SecondaryNameNode leaks NameCache entries | Critical | namenode | Todd Lipcon | Robert Joseph Evans |
| HDFS-4181 | LeaseManager tries to double remove and prints extra messages | Critical | namenode | Kihwal Lee | Kihwal Lee |
| HDFS-4172 | namenode does not URI-encode parameters when building URI for datanode request | Minor | namenode | Derek Dagit | Derek Dagit |
| HDFS-4162 | Some malformed and unquoted HTML strings are returned from datanode web ui | Minor | datanode | Derek Dagit | Derek Dagit |
| HDFS-4090 | getFileChecksum() result incompatible when called against zero-byte files. | Critical | hdfs-client | Kihwal Lee | Kihwal Lee |
| HDFS-4075 | Reduce recommissioning overhead | Critical | namenode | Kihwal Lee | Kihwal Lee |
| HDFS-4016 | back-port HDFS-3582 to branch-0.23 | Minor | . | Ivan A. Veselovsky | Ivan A. Veselovsky |
| HDFS-3996 | Add debug log removed in HDFS-3873 back | Minor | . | Eli Collins | Eli Collins |
| HDFS-3990 | NN's health report has severe performance problems | Critical | namenode | Daryn Sharp | Daryn Sharp |
| HDFS-3919 | MiniDFSCluster:waitClusterUp can hang forever | Minor | test | Andy Isaacson | Andy Isaacson |
| HDFS-3905 | Secure cluster cannot use hftp to an insecure cluster | Critical | hdfs-client, security | Daryn Sharp | Daryn Sharp |
| HDFS-3829 | TestHftpURLTimeouts fails intermittently with JDK7 | Major | test | Trevor Robinson | Trevor Robinson |
| HDFS-3824 | TestHftpDelegationToken fails intermittently with JDK7 | Major | test | Trevor Robinson | Trevor Robinson |
| HDFS-3224 | Bug in check for DN re-registration with different storage ID | Minor | . | Eli Collins | Jason Lowe |
| MAPREDUCE-4801 | ShuffleHandler can generate large logs due to prematurely closed channels | Critical | . | Jason Lowe | Jason Lowe |
| MAPREDUCE-4797 | LocalContainerAllocator can loop forever trying to contact the RM | Major | applicationmaster | Jason Lowe | Jason Lowe |
| MAPREDUCE-4787 | TestJobMonitorAndPrint is broken | Major | test | Ravi Prakash | Robert Parker |
| MAPREDUCE-4786 | Job End Notification retry interval is 5 milliseconds by default | Major | mrv2 | Ravi Prakash | Ravi Prakash |
| MAPREDUCE-4782 | NLineInputFormat skips first line of last InputSplit | Blocker | client | Mark Fuhs | Mark Fuhs |
| MAPREDUCE-4774 | JobImpl does not handle asynchronous task events in FAILED state | Major | applicationmaster, mrv2 | Ivan A. Veselovsky | Jason Lowe |
| MAPREDUCE-4772 | Fetch failures can take way too long for a map to be restarted | Critical | mrv2 | Robert Joseph Evans | Robert Joseph Evans |
| MAPREDUCE-4771 | KeyFieldBasedPartitioner not partitioning properly when configured | Major | mrv2 | Jason Lowe | Jason Lowe |
| MAPREDUCE-4751 | AM stuck in KILL_WAIT for days | Major | . | Ravi Prakash | Vinod Kumar Vavilapalli |
| MAPREDUCE-4748 | Invalid event: T_ATTEMPT_SUCCEEDED at SUCCEEDED | Blocker | mrv2 | Robert Joseph Evans | Jason Lowe |
| MAPREDUCE-4746 | The MR Application Master does not have a config to set environment variables | Major | applicationmaster | Robert Parker | Robert Parker |
| MAPREDUCE-4741 | WARN and ERROR messages logged during normal AM shutdown | Minor | applicationmaster, mrv2 | Jason Lowe | Vinod Kumar Vavilapalli |
| MAPREDUCE-4740 | only .jars can be added to the Distributed Cache classpath | Blocker | mrv2 | Robert Joseph Evans | Robert Joseph Evans |
| MAPREDUCE-4733 | Reducer can fail to make progress during shuffle if too many reducers complete consecutively | Major | applicationmaster, mrv2 | Jason Lowe | Jason Lowe |
| MAPREDUCE-4730 | AM crashes due to OOM while serving up map task completion events | Blocker | applicationmaster, mrv2 | Jason Lowe | Jason Lowe |
| MAPREDUCE-4729 | job history UI not showing all job attempts | Major | jobhistoryserver | Thomas Graves | Vinod Kumar Vavilapalli |
| MAPREDUCE-4724 | job history web ui applications page should be sorted to display last app first | Major | jobhistoryserver | Thomas Graves | Thomas Graves |
| MAPREDUCE-4721 | Task startup time in JHS is same as job startup time. | Major | jobhistoryserver | Ravi Prakash | Ravi Prakash |
| MAPREDUCE-4720 | Browser thinks History Server main page JS is taking too long | Major | . | Robert Joseph Evans | Ravi Prakash |
| MAPREDUCE-4705 | Historyserver links expire before the history data does | Critical | jobhistoryserver, mrv2 | Jason Lowe | Jason Lowe |
| MAPREDUCE-4674 | Hadoop examples secondarysort has a typo “secondarysrot” in the usage | Minor | . | Robert Justice | Robert Justice |
| MAPREDUCE-4554 | Job Credentials are not transmitted if security is turned off | Major | job submission, security | Benoy Antony | Benoy Antony |
| MAPREDUCE-4549 | Distributed cache conflicts breaks backwards compatability | Blocker | mrv2 | Robert Joseph Evans | Robert Joseph Evans |
| MAPREDUCE-4521 | mapreduce.user.classpath.first incompatibility with 0.20/1.x | Major | mrv2 | Jason Lowe | Ravi Prakash |
| MAPREDUCE-4479 | Fix parameter order in assertEquals() in TestCombineInputFileFormat.java | Major | test | Mariappan Asokan | Mariappan Asokan |
| MAPREDUCE-4425 | Speculation + Fetch failures can lead to a hung job | Critical | mrv2 | Siddharth Seth | Jason Lowe |
| MAPREDUCE-1806 | CombineFileInputFormat does not work with paths not on default FS | Major | harchive | Paul Yang | Gera Shegalov |
| YARN-214 | RMContainerImpl does not handle event EXPIRE at state RUNNING | Major | resourcemanager | Jason Lowe | Jonathan Eagles |
| YARN-212 | NM state machine ignores an APPLICATION_CONTAINER_FINISHED event when it shouldn't | Blocker | nodemanager | Nathan Roberts | Nathan Roberts |
| YARN-206 | TestApplicationCleanup.testContainerCleanup occasionally fails | Major | resourcemanager | Jason Lowe | Jason Lowe |
| YARN-201 | CapacityScheduler can take a very long time to schedule containers if requests are off cluster | Critical | capacityscheduler | Jason Lowe | Jason Lowe |
| YARN-189 | deadlock in RM - AMResponse object | Blocker | resourcemanager | Thomas Graves | Thomas Graves |
| YARN-180 | Capacity scheduler - containers that get reserved create container token to early | Critical | capacityscheduler | Thomas Graves | Arun C Murthy |
| YARN-178 | Fix custom ProcessTree instance creation | Critical | . | Radim Kolar | Radim Kolar |
| YARN-177 | CapacityScheduler - adding a queue while the RM is running has wacky results | Critical | capacityscheduler | Thomas Graves | Arun C Murthy |
| YARN-174 | TestNodeStatusUpdater is failing in trunk | Major | nodemanager | Robert Joseph Evans | Vinod Kumar Vavilapalli |
| YARN-166 | capacity scheduler doesn't allow capacity < 1.0 | Major | capacityscheduler | Thomas Graves | Thomas Graves |
| YARN-163 | Retrieving container log via NM webapp can hang with multibyte characters in log | Major | nodemanager | Jason Lowe | Jason Lowe |
| YARN-161 | Yarn Common has multiple compiler warnings for unchecked operations | Major | api | Chris Nauroth | Chris Nauroth |
| YARN-159 | RM web ui applications page should be sorted to display last app first | Major | resourcemanager | Thomas Graves | Thomas Graves |
| YARN-151 | Browser thinks RM main page JS is taking too long | Major | . | Robert Joseph Evans | Ravi Prakash |
| YARN-144 | MiniMRYarnCluster launches RM and JHS on default ports | Major | . | Robert Parker | Robert Parker |
| YARN-139 | Interrupted Exception within AsyncDispatcher leads to user confusion | Major | api | Nathan Roberts | Vinod Kumar Vavilapalli |
| YARN-131 | Incorrect ACL properties in capacity scheduler documentation | Major | capacityscheduler | Ahmed Radwan | Ahmed Radwan |
| YARN-116 | RM is missing ability to add include/exclude files without a restart | Major | resourcemanager | xieguiming | xieguiming |
| YARN-102 | Move the apache licence header to the top of the file in MemStore.java | Trivial | resourcemanager | Devaraj K | Devaraj K |
| YARN-43 | TestResourceTrackerService fail intermittently on jdk7 | Major | . | Thomas Graves | Thomas Graves |
| YARN-32 | TestApplicationTokens fails intermintently on jdk7 | Major | . | Thomas Graves | Vinod Kumar Vavilapalli |
| YARN-30 | TestNMWebServicesApps, TestRMWebServicesApps and TestRMWebServicesNodes fail on jdk7 | Major | . | Thomas Graves | Thomas Graves |
| YARN-28 | TestCompositeService fails on jdk7 | Major | . | Thomas Graves | Thomas Graves |