HDFS-5080. Merge change r1514386 from trunk.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1514391 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5076. Merge change r1514422 from trunk.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1514429 13f79535-47bb-0310-9956-ffa450edef68
Update CHANGES.txt to move YARN-1045 and MAPREDUCE-5352 to the correct version.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1514433 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1514448 merging from trunk to branch-2 to fix HADOOP-9868.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1514453 13f79535-47bb-0310-9956-ffa450edef68