YARN-579. Stop setting the Application Token in the AppMaster env, in favour of the copy present in the container token field. Contributed by Vinod Kumar Vavilapalli.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1471814 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5181. RMCommunicator should not use AMToken from the env. Contributed by Vinod Kumar Vavilapalli.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1471816 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4745. TestDataTransferKeepalive#testSlowReader has race condition that causes sporadic failure. Contributed by Chris Nauroth.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1475623 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-HDFS-4311-trunk-gd