YARN-2065 AM cannot create new containers after restart

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1607441 13f79535-47bb-0310-9956-ffa450edef68
HDFS-6612. MiniDFSNNTopology#simpleFederatedTopology(int) always hardcode nameservice ID. Contributed by Juan Yu.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1607442 13f79535-47bb-0310-9956-ffa450edef68
HDFS-6614. shorten TestPread run time with a smaller retry timeout setting. Contributed by Liang Xie.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1607447 13f79535-47bb-0310-9956-ffa450edef68
HDFS-6604. The short-circuit cache doesn't correctly time out replicas that haven't been used in a while (cmccabe)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1607456 13f79535-47bb-0310-9956-ffa450edef68
YARN-2241. ZKRMStateStore: On startup, show nicer messages if znodes already exist. (Robert Kanter via kasha)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1607473 13f79535-47bb-0310-9956-ffa450edef68
YARN-2232. Fixed ResourceManager to allow DelegationToken owners to be able to cancel their own tokens in secure mode. Contributed by Varun Vasudev.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1607484 13f79535-47bb-0310-9956-ffa450edef68
YARN-2022. Fixing CHANGES.txt to be correctly placed.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1607486 13f79535-47bb-0310-9956-ffa450edef68
HDFS-6610. TestShortCircuitLocalRead tests sometimes timeout on slow machines. Contributed by Charles Lamb.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1607496 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5900. Changed to the interpret container preemption exit code as a task attempt killing event. Contributed by Mayank Bansal.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1607512 13f79535-47bb-0310-9956-ffa450edef68
Preparing for release 2.6.0

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1607538 13f79535-47bb-0310-9956-ffa450edef68