Preparing for hadoop-2.1.0-beta release.

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Release notes for hadoop-2.1.0-beta.

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HDFS-4932. Merging change r1497143 from branch-2 to branch-2.1-beta.

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Merge -c 1497922 from trunk to branch-2.1-beta to fix HADOOP-9665. Fixed BlockDecompressorStream#decompress to return -1 rather than throw EOF at end of file. Contributed by Zhijie Shen.

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LF normalization according HADOOP-8912

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YARN-877. Support resource blacklisting for FifoScheduler. (Junping Du via llu)

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HDFS-4944. Merging change r1498057 from branch-2 to branch-2.1-beta.

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MAPREDUCE-5349. Merging change r from branch-2 to branch-2.1-beta.

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svn merge -c 1498672 Merging from branch-2 to branch-2.1-beta to fix HDFS-4888.

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HADOOP-9676.  Make maximum RPC buffer size configurable (Colin Patrick McCabe)

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HADOOP-9678. Merging change r1498787 from branch-2 to branch-2.1-beta.

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svn merge -c 1498962 from trunk for HDFS-4943. WebHdfsFileSystem does not work when original file path has encoded chars.


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HADOOP-9681. Merging change r1499070 from branch-2 to branch-2.1-beta.

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MAPREDUCE-5355. Merging change r1499149 from branch-2 to branch-2.1-beta.

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MAPREDUCE-5359. Merging change r1499154 from branch-2 to branch-2.1-beta.

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HADOOP-9509. Merging change r1499156 from branch-2

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HADOOP-9515. Merging change r1499167 from branch-2

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HDFS-4762,HDFS-4948. Merging change r1499190 from branch-2

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MAPREDUCE-5357. Merging change r1499217 from branch-2 to branch-2.1-beta.

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Fix build version for nfs projects in branch-2.1-beta.

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