| HADOOP-13988 | KMSClientProvider does not work with WebHDFS and Apache Knox w/ProxyUser | Major | common, kms | Greg Senia | Xiaoyu Yao | 
| HADOOP-14029 | Fix KMSClientProvider for non-secure proxyuser use case | Major | kms | Xiaoyu Yao | Xiaoyu Yao | 
| HDFS-12614 | FSPermissionChecker#getINodeAttrs() throws NPE when INodeAttributesProvider configured | Major | . | Manoj Govindassamy | Manoj Govindassamy | 
| YARN-7489 | ConcurrentModificationException in RMAppImpl#getRMAppMetrics | Major | capacityscheduler | Tao Yang | Tao Yang | 
| YARN-7525 | Incorrect query parameters in cluster nodes REST API document | Minor | documentation | Tao Yang | Tao Yang | 
| HDFS-12754 | Lease renewal can hit a deadlock | Major | . | Kuhu Shukla | Kuhu Shukla | 
| HDFS-11754 | Make FsServerDefaults cache configurable. | Minor | . | Rushabh S Shah | Mikhail Erofeev | 
| MAPREDUCE-5124 | AM lacks flow control for task events | Major | mr-am | Jason Lowe | Peter Bacsko | 
| HDFS-12833 | Distcp : Update the usage of delete option for dependency with update and overwrite option | Minor | distcp, hdfs | Harshakiran Reddy | usharani | 
| HDFS-12907 | Allow read-only access to reserved raw for non-superusers | Major | namenode | Daryn Sharp | Rushabh S Shah | 
| HDFS-12881 | Output streams closed with IOUtils suppressing write errors | Major | . | Jason Lowe | Ajay Kumar | 
| YARN-7595 | Container launching code suppresses close exceptions after writes | Major | nodemanager | Jason Lowe | Jim Brennan | 
| YARN-7661 | NodeManager metrics return wrong value after update node resource | Major | . | Yang Wang | Yang Wang | 
| HDFS-12347 | TestBalancerRPCDelay#testBalancerRPCDelay fails very frequently | Critical | test | Xiao Chen | Bharat Viswanadham | 
| HADOOP-15143 | NPE due to Invalid KerberosTicket in UGI | Major | . | Jitendra Nath Pandey | Mukul Kumar Singh | 
| MAPREDUCE-7028 | Concurrent task progress updates causing NPE in Application Master | Blocker | mr-am | Gergo Repas | Gergo Repas | 
| YARN-7619 | Max AM Resource value in Capacity Scheduler UI has to be refreshed for every user | Major | capacity scheduler, yarn | Eric Payne | Eric Payne | 
| YARN-7663 | RMAppImpl:Invalid event: START at KILLED | Major | resourcemanager | lujie | lujie | 
| YARN-6948 | Invalid event: ATTEMPT_ADDED at FINAL_SAVING | Major | yarn | lujie | lujie | 
| HDFS-6804 | Add test for race condition between transferring block and appending block causes “Unexpected checksum mismatch exception” | Major | datanode | Gordon Wang | Brahma Reddy Battula | 
| HDFS-9049 | Make Datanode Netty reverse proxy port to be configurable | Major | datanode | Vinayakumar B | Vinayakumar B | 
| HADOOP-15150 | in FsShell, UGI params should be overidden through env vars(-D arg) | Major | . | Brahma Reddy Battula | Brahma Reddy Battula | 
| HADOOP-15181 | Typo in SecureMode.md | Trivial | documentation | Masahiro Tanaka | Masahiro Tanaka | 
| YARN-7102 | NM heartbeat stuck when responseId overflows MAX_INT | Critical | . | Botong Huang | Botong Huang | 
| MAPREDUCE-7020 | Task timeout in uber mode can crash AM | Major | mr-am | Akira Ajisaka | Peter Bacsko | 
| HDFS-13100 | Handle IllegalArgumentException when GETSERVERDEFAULTS is not implemented in webhdfs. | Critical | hdfs, webhdfs | Yongjun Zhang | Yongjun Zhang | 
| YARN-7849 | TestMiniYarnClusterNodeUtilization#testUpdateNodeUtilization fails due to heartbeat sync error | Major | test | Jason Lowe | Botong Huang | 
| HDFS-13120 | Snapshot diff could be corrupted after concat | Major | namenode, snapshots | Xiaoyu Yao | Xiaoyu Yao | 
| HDFS-10453 | ReplicationMonitor thread could stuck for long time due to the race between replication and delete of same file in a large cluster. | Major | namenode | He Xiaoqiao | He Xiaoqiao | 
| HDFS-8693 | refreshNamenodes does not support adding a new standby to a running DN | Critical | datanode, ha | Jian Fang | Ajith S | 
| MAPREDUCE-7052 | TestFixedLengthInputFormat#testFormatCompressedIn is flaky | Major | client, test | Peter Bacsko | Peter Bacsko | 
| HDFS-13112 | Token expiration edits may cause log corruption or deadlock | Critical | namenode | Daryn Sharp | Daryn Sharp | 
| MAPREDUCE-7053 | Timed out tasks can fail to produce thread dump | Major | . | Jason Lowe | Jason Lowe | 
| HADOOP-15206 | BZip2 drops and duplicates records when input split size is small | Major | . | Aki Tanaka | Aki Tanaka | 
| YARN-7947 | Capacity Scheduler intra-queue preemption can NPE for non-schedulable apps | Major | capacity scheduler, scheduler preemption | Eric Payne | Eric Payne | 
| HADOOP-14903 | Add json-smart explicitly to pom.xml | Major | common | Ray Chiang | Ray Chiang | 
| HDFS-12070 | Failed block recovery leaves files open indefinitely and at risk for data loss | Major | . | Daryn Sharp | Kihwal Lee | 
| HADOOP-15283 | Upgrade from findbugs 3.0.1 to spotbugs 3.1.2 in branch-2 to fix docker image build | Major | . | Xiao Chen | Akira Ajisaka | 
| HDFS-13164 | File not closed if streamer fail with DSQuotaExceededException | Major | hdfs-client | Xiao Chen | Xiao Chen | 
| HDFS-13109 | Support fully qualified hdfs path in EZ commands | Major | hdfs | Hanisha Koneru | Hanisha Koneru | 
| MAPREDUCE-6930 | mapreduce.map.cpu.vcores and mapreduce.reduce.cpu.vcores are both present twice in mapred-default.xml | Major | mrv2 | Daniel Templeton | Sen Zhao | 
| HDFS-12156 | TestFSImage fails without -Pnative | Major | test | Akira Ajisaka | Akira Ajisaka | 
| YARN-8054 | Improve robustness of the LocalDirsHandlerService MonitoringTimerTask thread | Major | . | Jonathan Eagles | Jonathan Eagles | 
| HDFS-13195 | DataNode conf page  cannot display the current value after reconfig | Minor | datanode | maobaolong | maobaolong | 
| HADOOP-12862 | LDAP Group Mapping over SSL can not specify trust store | Major | . | Wei-Chiu Chuang | Wei-Chiu Chuang | 
| HADOOP-15317 | Improve NetworkTopology chooseRandom’s loop | Major | . | Xiao Chen | Xiao Chen | 
| HDFS-13427 | Fix the section titles of transparent encryption document | Minor | documentation | Akira Ajisaka | Akira Ajisaka | 
| YARN-8120 | JVM can crash with SIGSEGV when exiting due to custom leveldb logger | Major | nodemanager, resourcemanager | Jason Lowe | Jason Lowe | 
| YARN-8147 | TestClientRMService#testGetApplications sporadically fails | Major | test | Jason Lowe | Jason Lowe | 
| HADOOP-14970 | MiniHadoopClusterManager doesn’t respect lack of format option | Minor | . | Erik Krogen | Erik Krogen | 
| HADOOP-15180 | branch-2 : daemon processes’ sysout overwrites ‘ulimit -a’ in daemon’s out file | Minor | scripts | Ranith Sardar | Ranith Sardar | 
| HDFS-10183 | Prevent race condition during class initialization | Minor | fs | Pavel Avgustinov | Pavel Avgustinov | 
| HADOOP-15390 | Yarn RM logs flooded by DelegationTokenRenewer trying to renew KMS tokens | Critical | . | Xiao Chen | Xiao Chen | 
| HADOOP-15385 | Many tests are failing in hadoop-distcp project in branch-2 | Critical | tools/distcp | Rushabh S Shah | Jason Lowe | 
| MAPREDUCE-7073 | Optimize TokenCache#obtainTokensForNamenodesInternal | Major | . | Bibin A Chundatt | Bibin A Chundatt |