Hadoop HDFS Change Log for HDFS-4949

HDFS-4949 (Unreleased)

  INCOMPATIBLE CHANGES

  NEW FEATURES

  IMPROVEMENTS
    HDFS-5049.  Add JNI mlock support.  (Andrew Wang via Colin Patrick McCabe)

    HDFS-5051.  Propagate cache status information from the DataNode to the
    NameNode  (Andrew Wang via Colin Patrick McCabe)

    HDFS-5052.  Add cacheRequest/uncacheRequest support to NameNode.
    (contributed by Colin Patrick McCabe)

  OPTIMIZATIONS

  BUG FIXES