git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1227969 13f79535-47bb-0310-9956-ffa450edef68
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1212064 13f79535-47bb-0310-9956-ffa450edef68