YARN-2760. Remove 'experimental' from FairScheduler docs. (Harsh J via kasha)

(cherry picked from commit ade3727ecb092935dcc0f1291c1e6cf43d764a03)
YARN-2279. Add UTs to cover timeline server authentication. Contributed by Zhijie Shen
HDFS-6663. Admin command to track file and locations from block id.
Contributed by Chen He.
(cherry picked from commit 371a3b87ed346732ed58a4faab0c6c1db57c86ed)

Conflicts:
	hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSck.java
HDFS-7213. processIncrementalBlockReport performance degradation.
Contributed by Eric Payne.
(cherry picked from commit e226b5b40d716b6d363c43a8783766b72734e347)
YARN-2758. Update TestApplicationHistoryClientService to use the new generic history store. Contributed by Zhijie Shen
YARN-2741. Made NM web UI serve logs on the drive other than C: on Windows. Contributed by Craig Welch.

(cherry picked from commit 8984e9b1774033e379b57da1bd30a5c81888c7a3)
HDFS-7291. Persist in-memory replicas with appropriate unbuffered copy API on POSIX and Windows. Contributed by Xiaoyu Yao.

(cherry picked from commit c6f04f391b54e57467b3ae5d0a95bd96e7feaa82)

Conflicts:
	hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt