HDFS-4346. Add a file missed in r1471598

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1471602 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4243. Merge r1416709 from trunk.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1471603 13f79535-47bb-0310-9956-ffa450edef68