YARN-101. Fix NodeManager heartbeat processing to not lose track of completed containers in case of dropped heartbeats. Contributed by Xuan Gong.
svn merge --ignore-ancestry -c 1464105 ../../trunk/


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Merge -r 1464129:1464130 from trunk to branch-2. Fixes: YARN-381. Improve fair scheduler docs. Contributed by Sandy Ryza.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1464131 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5088. MR Client gets an renewer token exception while Oozie is submitting a job (daryn)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1464147 13f79535-47bb-0310-9956-ffa450edef68
YARN-538. RM address DNS lookup can cause unnecessary slowness on every JHS page load. (sandyr via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1464198 13f79535-47bb-0310-9956-ffa450edef68
YARN-458. YARN daemon addresses must be placed in many different configs. (sandyr via tucu)

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