merge of r1535792 through r1540238 from trunk.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1540239 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5480. Update Balancer for HDFS-2832. (Contributed by szetszwo)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1540547 13f79535-47bb-0310-9956-ffa450edef68
Merging r1540239 through r1540547 from trunk to branch HDFS-2832

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1540549 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5486. Fix TestNameNodeMetrics for HDFS-2832.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1540619 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5491. Update editsStored for HDFS-2832.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1540903 13f79535-47bb-0310-9956-ffa450edef68
Merging r1540548 through r1540909 from trunk to branch HDFS-2832

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1540910 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5494. Fix findbugs warnings for HDFS-2832.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1540924 13f79535-47bb-0310-9956-ffa450edef68
merge r1535792 through r1541341 from trunk.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1541342 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5508. Fix compilation error after merge. (Contributed by szetszwo)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1541352 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5501. Fix pendingReceivedRequests tracking in BPServiceActor.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1541371 13f79535-47bb-0310-9956-ffa450edef68
Merging r1541342 through r1541617 from trunk to branch HDFS-2832

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1541620 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5510. Fix a findbug warning in DataStorage.java on HDFS-2832 branch. (Contributed by Junping Du)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1542006 13f79535-47bb-0310-9956-ffa450edef68
Merging r1541618 through r1542122 from trunk to branch HDFS-2832

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HDFS-5515. Fix TestDFSStartupVersions for HDFS-2832.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1542176 13f79535-47bb-0310-9956-ffa450edef68
Merging r1542123 through r1543110 from trunk to branch HDFS-2832

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1543115 13f79535-47bb-0310-9956-ffa450edef68
Merging r1543111 through r1543509 from trunk to branch HDFS-2832

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1543510 13f79535-47bb-0310-9956-ffa450edef68
Merging r1543613 through r1543709 from trunk to branch HDFS-2832

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1543710 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5527. Fix TestUnderReplicatedBlocks on branch HDFS-2832.

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Merging r1543710 through r1543901 from trunk to branch HDFS-2832

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2832@1543902 13f79535-47bb-0310-9956-ffa450edef68
Merging r1543902 through r1544303 from trunk to branch HDFS-2832

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