YARN-467. Modify public distributed cache to localize files such that no local directory hits unix file count limits and thus prevent job failures. Contributed by Omkar Vinit Joshi.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1463823 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5117. Changed MRClientProtocolPBClientImpl to be closeable and thus fix failures in renewal of HistoryServer's delegations tokens. Contributed by Siddharth Seth.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1463828 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-HDFS-4312-trunk-gd