HDFS-5555. CacheAdmin commands fail when first listed NameNode is in Standby (jxiang via cmccabe)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1547895 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5536. Implement HTTP policy for Namenode and DataNode. Contributed by Haohui Mai.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1547925 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5632. TestRMContainerAllocator#testUpdatedNodes fails (jeagles)

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HDFS-4983. Numeric usernames do not work with WebHDFS FS. Contributed by Yongjun Zhang.

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Revert HDFS-4983

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HDFS-5626. dfsadmin report shows incorrect values (cmccabe)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1548000 13f79535-47bb-0310-9956-ffa450edef68
YARN-1403. Separate out configuration loading from QueueManager in the Fair Scheduler (Sandy Ryza)

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Merge remote-tracking branch: upstream/trunk