YARN-2818. Removed the now unnecessary user entity injection from Timeline service given we now have domains. Contributed by Zhijie Shen.
YARN-2768 Improved Yarn Registry service record structure (stevel)
MAPREDUCE-5958. Wrong reduce task progress if map output is compressed. Contributed by Emilio Coppa and Jason Lowe.
HDFS-7365. Remove hdfs.server.blockmanagement.MutableBlockCollection. Contributed by Li Lu.
HADOOP-11274. ConcurrentModificationException in Configuration Copy Constructor. Contributed by Junping Du.
YARN-2744. Fixed CapacityScheduler to validate node-labels correctly against queues. Contributed by Wangda Tan.
HDFS-7364. Balancer always shows zero Bytes Already Moved. Contributed by Tsz Wo Nicholas Sze.
Revert "HADOOP-11274. ConcurrentModificationException in Configuration Copy Constructor. Contributed by Junping Du."

This reverts commit 16b34824673f5a50d464727b8fad98470e5e984a.
YARN-2647. Added a queue CLI for getting queue information. Contributed by Sunil Govind.
HDFS-7221. Update CHANGES.txt to indicate fix in 2.6.0.
HDFS-7226. Update CHANGES.txt to indicate fix in 2.6.0.
HADOOP-11280. TestWinUtils#testChmod fails after removal of NO_PROPAGATE_INHERIT_ACE. Contributed by Chris Nauroth.
YARN-2823. Fixed ResourceManager app-attempt state machine to inform schedulers about previous finished attempts of a running appliation to avoid expectation mismatch w.r.t transferred containers. Contributed by Jian He.
YARN-2810. TestRMProxyUsersConf fails on Windows VMs. Contributed by Varun Vasudev
YARN-2824. Fixed Capacity Scheduler to not crash when some node-labels are not mapped to queues by making default capacities per label to be zero. Contributed by Wangda Tan.
YARN-2827. Fixed bugs in "yarn queue" CLI. Contributed by Wangda Tan.
YARN-2803. MR distributed cache not working correctly on Windows after NodeManager privileged account changes. Contributed by Craig Welch.
HDFS-7379. TestBalancer#testBalancerWithRamDisk creates test files incorrectly. Contributed by Xiaoyu Yao.
YARN-2753. Fixed a bunch of bugs in the NodeLabelsManager classes. Contributed by Zhihai xu.
HADOOP-11282. Skip NFS TestShellBasedIdMapping tests that are irrelevant on Windows. Contributed by Chris Nauroth.