HADOOP-10280. Make Schedulables return a configurable identity of user or group. (Contributed by Chris Li)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1581532 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10280. Add files missed in previous checkin.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1581533 13f79535-47bb-0310-9956-ffa450edef68
YARN-1452. Added documentation about the configuration and usage of generic application history and the timeline data service. Contributed by Zhijie Shen.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1581656 13f79535-47bb-0310-9956-ffa450edef68
YARN-1867. Fixed a bug in ResourceManager that was causing invalid ACL checks in the web-services after fail-over. Contributed by Vinod Kumar Vavilapalli.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1581662 13f79535-47bb-0310-9956-ffa450edef68