Merged revision 1522595 from trunk. git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1522597 13f79535-47bb-0310-9956-ffa450edef68
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1500930 13f79535-47bb-0310-9956-ffa450edef68