YARN-1667. Modified RM HA handling of super users (with proxying ability) to be available across RM failover by making using of a remote configuration-provider. Contributed by Xuan Gong.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1564100 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10244. TestKeyShell improperly tests the results of delete (Larry
McCay via omalley)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1564137 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5767. NFS implementation assumes userName userId mapping to be unique, which is not true sometimes. Contributed by Yongjun Zhang

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1564141 13f79535-47bb-0310-9956-ffa450edef68