HDFS-6951. Correctly persist raw namespace xattrs to edit log and fsimage. Contributed by Charles Lamb.
Update CHANGES.txt for HDFS-6951
HDFS-6981. Fix DN upgrade with layout version change. (Arpit Agarwal)
HDFS-6981. Fix CHANGES.txt
Newly moved block replica been invalidated and deleted in TestBalancer. Contributed by Binglin Chang.
Add missing YARN-1471 to the CHANGES.txt
HADOOP-10925. Change attribution in CHANGES.txt from trunk to 2.6.0.
YARN-2526. SLS can deadlock when all the threads are taken by AMSimulators. (Wei Yan via kasha)
Revert HDFS-6940.
HDFS-6482. Fix CHANGES.txt in trunk.
HADOOP-11057. checknative command to probe for winutils.exe on windows. Contributed by Xiaoyu Yao.
Merge changes from trunk