HDFS-7266. HDFS Peercache enabled check should not lock on object (awang via cmccabe)
HDFS-7154. Fix returning value of starting reconfiguration task (Lei Xu via Colin P. McCabe)
YARN-2701. Potential race condition in startLocalizer when using LinuxContainerExecutor. Contributed by Xuan Gong
Missing file for YARN-2701