YARN-2340. Fixed NPE when queue is stopped during RM restart. Contributed by Rohith Sharmaks
HDFS-7456. De-duplicate AclFeature instances with same AclEntries do reduce memory footprint of NameNode (Contributed by Vinayakumar B)
HDFS-7484. Make FSDirectory#addINode take existing INodes as its parameter. Contributed by Jing Zhao.