MAPREDUCE-5918. LineRecordReader can return the same decompressor to CodecPool multiple times (Sergey Murylev via raviprak)
YARN-2857. ConcurrentModificationException in ContainerLogAppender. Contributed by Mohammad Kamrul Islam
HADOOP-11257. Update "hadoop jar" documentation to warn against using it for launching yarn jars (iwasakims via cmccabe)
Revert HADOOP-11257 because it didn't get a jenkins run yet
MAPREDUCE-6161. mapred hsadmin command missing from trunk. Contributed by Allen Wittenauer
YARN-2816. NM fail to start with NPE during container recovery. Contributed by Zhihai Xu
YARN-2811. In Fair Scheduler, reservation fulfillments shouldn't ignore max share (Siqi Li via Sandy Ryza)
HADOOP-11307. create-release script should run git clean first (kasha)
HDFS-7386. Replace check "port number < 1024" with shared isPrivilegedPort method. Contributed by Yongjun Zhang.
YARN-2432. RMStateStore should process the pending events before close. Contributed by Varun Saxena
YARN-1703. Fixed ResourceManager web-proxy to close connections correctly. Contributed by Rohith Sharma.
HDFS-7394. Log at INFO level, not WARN level, when InvalidToken is seen in ShortCircuitCache (Keith Pak via Colin P. McCabe)
HDFS-7399. Lack of synchronization in DFSOutputStream#Packet#getLastByteOffsetBlock() (Contributed by Vinayakumar B)
HDFS-7279. Use netty to implement DatanodeWebHdfsMethods. Contributed by Haohui Mai.
HADOOP-11157. ZKDelegationTokenSecretManager never shuts down listenerThreadPool. Contributed by Arun Suresh.
YARN-2414. RM web UI: app page will crash if app is failed before any attempt has been created. Contributed by Wangda Tan
HDFS-7146. NFS ID/Group lookup requires SSSD enumeration on the server. Contributed by Yongjun Zhang
HADOOP-11311. Restrict uppercase key names from being created with JCEKS.
MAPREDUCE-6162. mapred hsadmin fails on a secure cluster. Contributed by Jason Lowe
YARN-2690. [YARN-2574] Make ReservationSystem and its dependent classes independent of Scheduler type. (Anubhav Dhoot via kasha)