HDFS-4349. Add test for reading files from BackupNode. Contributed by Konstantin Shvachko.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1427291 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1428095 FIXES: YARN-293. Node Manager leaks LocalizerRunner object for every Container. Contributed by Robert Joseph Evans


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1428097 13f79535-47bb-0310-9956-ffa450edef68
Merge -r 1428313:1428314 from trunk to branch-2. Fixes: YARN-192. Node update causes NPE in the fair scheduler. Contributed by Sandy Ryza

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1428316 13f79535-47bb-0310-9956-ffa450edef68
Merge -r 1428361:1428362 from trunk to branch-2. Fixes: YARN-288. Fair scheduler queue doesn't accept any jobs when ACLs are configured. Contributed by Sandy Ryza.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1428383 13f79535-47bb-0310-9956-ffa450edef68
Merge -r 1428386:1428387 from trunk to branch-2. Fixes: YARN-300. After YARN-271, fair scheduler can infinite loop and not schedule any application. Contributed by Sandy Ryza.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1428393 13f79535-47bb-0310-9956-ffa450edef68
Merge -r 1428399:1428400 from trunk to branch-2. Fixes: YARN-301. Fair scheduler throws ConcurrentModificationException when iterating over app's priorities. Contributed by Sandy Ryza.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1428401 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1428482 FIXES: MAPREDUCE-4279. getClusterStatus() fails with null pointer exception when running jobs in local mode (Devaraj K via bobby)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1428489 13f79535-47bb-0310-9956-ffa450edef68
merge YARN-103 from trunk. Add a yarn AM-RM client module. Contributed by Bikas Saha.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1428555 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4302. Fix fatal exception when starting NameNode with DEBUG logs. Contributed by Eugene Koontz.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1428591 13f79535-47bb-0310-9956-ffa450edef68