HADOOP-11254. Changed visibility of AccessControlList to be public for consumption by ecosystem. Contributed by Zhijie Shen.
HDFS-7276. Limit the number of byte arrays used by DFSOutputStream and provide a mechanism for recycling arrays.
YARN-2790. Fixed a NodeManager bug that was causing log-aggregation to fail beyond HFDS delegation-token expiry even when RM is a proxy-user (YARN-2704). Contributed by Jian He.
Merge pull request #2 from apache/trunk

[apache merge] Merge from apache/hadoop, 20141102.