HADOOP-9247. Merge r1438698 from trunk

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1439533 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9255. relnotes.py missing last jira (tgraves)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1439604 13f79535-47bb-0310-9956-ffa450edef68
merge -r 1439652:1439653 Merging YARN-133 to branch-0.23

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1439656 13f79535-47bb-0310-9956-ffa450edef68
Merge branch 'branch-0.23' of https://github.com/griddynamics/yhadoop-common into gd-0.23-YAHOO-35