HDFS-6425. Large postponedMisreplicatedBlocks has impact on blockReport latency. Contributed by Ming Ma.
YARN-2762. Fixed RMAdminCLI to trim and check node-label related arguments before sending to RM. Contributed by Rohith Sharmaks
HDFS-7494. Checking of closed in DFSInputStream#pread() should be protected by synchronization (Ted Yu via Colin P. McCabe)
HDFS-7536. Remove unused CryptoCodec in org.apache.hadoop.fs.Hdfs. Contributed by Haohui Mai.