svn merge -c 1516594 FIXES: Revert MAPREDUCE-5475


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1516596 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9887. Merging change r1516608 from trunk to branch-2.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1516612 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5470. Merging change r1516623 from trunk to branch-2.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1516625 13f79535-47bb-0310-9956-ffa450edef68