Merge -r 1424944:1424945 from trunk to branch-2. Fixes: YARN-271. Fair scheduler hits IllegalStateException trying to reserve different apps on same node. Contributed by Sandy Ryza.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1424946 13f79535-47bb-0310-9956-ffa450edef68
YARN-272. Fair scheduler log messages try to print objects without overridden toString methods. (sandyr via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1424988 13f79535-47bb-0310-9956-ffa450edef68
YARN-278. Fair scheduler maxRunningApps config causes no apps to make progress. (sandyr via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1424992 13f79535-47bb-0310-9956-ffa450edef68
YARN-282. Fair scheduler web UI double counts Apps Submitted. (sandyr via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1424997 13f79535-47bb-0310-9956-ffa450edef68
YARN-283. Fair scheduler fails to get queue info without root prefix. (sandyr via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1424999 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1425071 FIXES: MAPREDUCE-4842. Shuffle race can hang reducer. Contributed by Mariappan Asokan


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1425074 13f79535-47bb-0310-9956-ffa450edef68
YARN-280. RM does not reject app submission with invalid tokens (Daryn Sharp via tgraves)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1425085 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1425167 FIXES: MAPREDUCE-4833. Task can get stuck in FAIL_CONTAINER_CLEANUP. Contributed by Robert Parker


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1425168 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-4272. SortedRanges.Range#compareTo is not spec compliant. (Yu Gao via llu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1425179 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1425177 FIXES: MAPREDUCE-4793. Problem with adding resources when using both -files and -file to hadoop streaming. Contributed by Jason Lowe


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1425181 13f79535-47bb-0310-9956-ffa450edef68
YARN-285. Added a temporary plugin interface for RM to be able to redirect to JobHistory server for apps that it no longer tracks. Contributed by Derek Dagit.
svn merge --ignore-ancestry -c 1425210 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1425211 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1425223 FIXES: MAPREDUCE-4890. Invalid TaskImpl state transitions when task fails while speculating. Contributed by Jason Lowe


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1425224 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-4899. Implemented a MR specific plugin for tracking finished applications that YARN's ResourceManager doesn't keep track off anymore. Contributed by Derek Dagit.
svn merge --ignore-ancestry -c 1425225 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1425226 13f79535-47bb-0310-9956-ffa450edef68
Fixing CHANGES.txt for YARN-285.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1425230 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9162. Merge change 1425390 from trunk

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1425392 13f79535-47bb-0310-9956-ffa450edef68
Reverting HDFS-4326 since it caused 'mvn package' to break.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1425400 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-8427. Convert Forrest docs to APT, incremental. (adi2 via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1425527 13f79535-47bb-0310-9956-ffa450edef68
Merge -c 1425560 from trunk to branch-2 to fix HDFS-4326. bump up Tomcat version for HttpFS to 6.0.36. Contributed by Alejandro Abdelnur.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1425562 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1426018 FIXES: MAPREDUCE-4902. Fix typo "receievd" should be "received" in log output. Contributed by Albert Chu


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1426020 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1426515 FIXES: YARN-225. Proxy Link in RM UI thows NPE in Secure mode (Devaraj K via bobby)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1426516 13f79535-47bb-0310-9956-ffa450edef68