HDFS-6425. Large postponedMisreplicatedBlocks has impact on blockReport latency. Contributed by Ming Ma.
(cherry picked from commit b7923a356e9f111619375b94d12749d634069347)
YARN-2762. Fixed RMAdminCLI to trim and check node-label related arguments before sending to RM. Contributed by Rohith Sharmaks
(cherry picked from commit c65f1b382ec5ec93dccf459dbf8b2c93c3e150ab)
HDFS-7494. Checking of closed in DFSInputStream#pread() should be protected by synchronization (Ted Yu via Colin P. McCabe)
(cherry picked from commit a97a1e73177974cff8afafad6ca43a96563f3c61)
Revert HADOOP-11356 in branch-2.
HDFS-7536. Remove unused CryptoCodec in org.apache.hadoop.fs.Hdfs. Contributed by Haohui Mai.