HDFS-5579. Under construction files make DataNode decommission take very long hours. Contributed by zhaoyunjiong.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1557904 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10228. FsPermission#fromShort() should cache FsAction.values(). Contributed by Haohui Mai.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1558139 13f79535-47bb-0310-9956-ffa450edef68
Adding 2.0.6-alpha release to the CHANGES.txt

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1558215 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5677. Need error checking for HA cluster configuration. Contributed by Vincent Sheffer.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1558217 13f79535-47bb-0310-9956-ffa450edef68
YARN-1567. In Fair Scheduler, allow empty queues to change between leaf and parent on allocation file reload (Sandy Ryza)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1558228 13f79535-47bb-0310-9956-ffa450edef68
YARN-321. Forwarding YARN-321 branch to latest trunk.


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