HDFS-4353. Encapsulate connections to peers in Peer and PeerServer classes. Contributed by Colin Patrick McCabe.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1430507 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4033. Miscellaneous findbugs 2 fixes. Contributed by Eli Collins


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1430534 13f79535-47bb-0310-9956-ffa450edef68
Updated CHANGES.txt to add HDFS-4033.


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HDFS-4034. Remove redundant null checks. Contributed by Eli Collins


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1430585 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4035. LightWeightGSet and LightWeightHashSet increment a volatile without synchronization. Contributed by Eli Collins


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svn merge -c -1430507 . for reverting HDFS-4353. Encapsulate connections to peers in Peer and PeerServer classes


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1430662 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c -1428729 . for reverting HDFS-4352. Encapsulate arguments to BlockReaderFactory in a class


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YARN-2. Enhanced CapacityScheduler to account for CPU alongwith memory for multi-dimensional resource scheduling. Contributed by Arun C. Murthy.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1430682 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-4520. Added support for MapReduce applications to request for CPU cores along-with memory post YARN-2. Contributed by Arun C. Murthy.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1430688 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-4810. Added new admin command options for MR AM. Contributed by Jerry Chen.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1430707 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4261. Fix bugs in Balaner causing infinite loop and TestBalancerWithNodeGroup timeing out.  Contributed by Junping Du


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1430917 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-1700. User supplied dependencies may conflict with MapReduce system JARs.

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Branch for HDFS-347


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HDFS-4353. Encapsulate connections to peers in Peer and PeerServer classes. Contributed by Colin Patrick McCabe.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-347@1431097 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4354. Create DomainSocket and DomainPeer and associated unit tests. Contributed by Colin Patrick McCabe.

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short-circuit reader