create branch for HDFS-4949

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-4949@1509426 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5049.  Add JNI mlock support.  (Andrew Wang via Colin Patrick McCabe)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-4949@1512427 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5051.  Propagate cache status information from the DataNode to the NameNode  (Andrew Wang via Colin Patrick McCabe)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-4949@1513653 13f79535-47bb-0310-9956-ffa450edef68
merge trunk into HDFS-4949 branch

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-4949@1513658 13f79535-47bb-0310-9956-ffa450edef68
Create a new branch from trunk for HDFS-2832: Enable support for heterogeneous storages in HDFS.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1513717 13f79535-47bb-0310-9956-ffa450edef68
merge trunk into HDFS-4949 branch


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-4949@1514105 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4953. Enable HDFS local reads via mmap. Contributed by Colin Patrick McCabe.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-4949@1515906 13f79535-47bb-0310-9956-ffa450edef68
Add CHANGES.txt for HDFS-4953

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Merge all changes from trunk to branch HDFS-2832

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1516230 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4985.  Add storage type to the protocol and expose it in block report and block locations

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1516323 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5115. Make StorageID a UUID.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1516666 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5052. Add cacheRequest/uncacheRequest support to NameNode.  (Contributed by Colin Patrick McCabe.)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-4949@1516669 13f79535-47bb-0310-9956-ffa450edef68
Merge all changes from trunk to branch HDFS-2832

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1517030 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5050.  Add DataNode support for mlock and munlock  (contributed by Andrew Wang)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-4949@1517106 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5000. DataNode configuration should allow specifying storage type

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HDFS-5000.  DataNode configuration should allow specifying storage type (Adding file missed in last commit

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Merge all changes from trunk to branch HDFS-2832.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1517887 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4987. Namenode changes to track multiple storages per datanode.


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Update CHANGES_HDFS-2832.txt with HDFS-4985, HDFS-5115 and HDFS-5000.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1518426 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5141. Add cache status information to datanode heartbeat. (Contributed by Andrew Wang)

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