HADOOP-9977. Merging change r1525657 from trunk to branch-2.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1525658 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5139. Merge r1525659 from trunk to branch-2

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1525661 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5139. Merge r1525665 from trunk to branch-2

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1525667 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1525670 FIXES: MAPREDUCE-5522. Incorrect oreder expected from JobQueueInfo (Jinghui Wang via bobby)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1525673 13f79535-47bb-0310-9956-ffa450edef68