HADOOP-10343. Merging change r1568054 from trunk

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1568059 13f79535-47bb-0310-9956-ffa450edef68
YARN-1417. Modified RM to generate container-tokens not at creation time, but at allocation time so as to prevent RM
from shelling out containers with expired tokens. Contributed by Omkar Vinit Joshi and Jian He.
svn merge --ignore-ancestry -c 1568060 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1568061 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5913. Merging change r1568076 from trunk

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1568119 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1568118 FIXES: MAPREDUCE-5670. CombineFileRecordReader should report progress when moving to the next file. Contributed by Chen He


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HADOOP-10249. Merge 1568164 from trunk.

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HDFS-5934. Merging change r1568165 from trunk

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HDFS-5901. Merging change r1568168 from trunk

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1568169 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5531. Merge change r1544018 from trunk.

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