HDFS-5938. Make BlockReaderFactory#BlockReaderPeer a static class to avoid a findbugs warning (cmccabe)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1567768 13f79535-47bb-0310-9956-ffa450edef68
YARN-1531. True up yarn command documentation (Akira Ajisaka via kasha)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1567776 13f79535-47bb-0310-9956-ffa450edef68
YARN-1692. ConcurrentModificationException in fair scheduler AppSchedulable (Sangjin Lee via Sandy Ryza)

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Move YARN-1692 in CHANGES.txt

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HDFS-5891. Merging change r1567810 from trunk

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YARN-1578. Fixed reading incomplete application attempt and container data in FileSystemApplicationHistoryStore. Contributed by Shinichi Yamashita.
svn merge --ignore-ancestry -c 1567816 ../../trunk/


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Merge r1567820 from trunk. YARN-1345. Remove FINAL_SAVING state from YarnApplicationAttemptState. Contributed by Zhijie Shen

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HDFS-5940.  Minor cleanups to ShortCircuitReplica, FsDatasetCache, and DomainSocketWatcher (cmccabe)

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