Moving MAPREDUCE-4678's changes line to 0.23 section to prepare for backport.

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MAPREDUCE-4925. The pentomino option parser may be buggy. Contributed by Karthik Kambatla. (harsh)

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MAPREDUCE-4936. JobImpl uber checks for cpu are wrong. Contributed by Arun C Murthy


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1433445 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4399. Fix RAT warnings by excluding images sub-dir in docs. Contributed by Thomas Graves.

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YARN-335. Fair scheduler doesn't check whether rack needs containers before assigning to node. Contributed by Sandy Ryza.

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YARN-336. Fair scheduler FIFO scheduling within a queue only allows 1 app at a time. Contributed by Sandy Ryza.

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Merge branch 'trunk' of github.com:griddynamics/yhadoop-common into trunk-gd
HADOOP-8816. HTTP Error 413 full HEAD if using kerberos authentication. (moritzmoeller via tucu)

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YARN-135. Client tokens should be per app-attempt, and should be unregistered on App-finish. Contributed by Vinod Kumar Vavilapalli


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1433570 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4392. Use NetUtils#getFreeSocketPort in MiniDFSCluster. Contributed by Andrew Purtell.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1433578 13f79535-47bb-0310-9956-ffa450edef68
YARN-135. Add missing files from last commit.


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Merge branch 'trunk' of github.com:griddynamics/yhadoop-common into trunk-gd
HADOOP-8712. Change default hadoop.security.group.mapping to JniBasedUnixGroupsNetgroupMappingWithFallback. Contributed by Robert Parker.

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HADOOP-9217. Print thread dumps when hadoop-common tests fail. Contributed by Andrey Klochkov.

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HADOOP-9106. Allow configuration of IPC connect timeout. Contributed by Rober Parker.

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MAPREDUCE-4924. flakey test: org.apache.hadoop.mapred.TestClusterMRNotification.testMR. (rkanter via tucu)

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HDFS-4288. NN accepts incremental BR as IBR in safemode. Contributed by Daryn Sharp.

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Merge branch 'trunk' of github.com:griddynamics/yhadoop-common into trunk-gd
Revert r1433755: HDFS-4288. NN accepts incremental BR as IBR in safemode. Contributed by Daryn Sharp.

This commit caused TestBlockManager to fail.


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HADOOP-9212. Potential deadlock in FileSystem.Cache/IPC/UGI.

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