HBASE-8531 TestZooKeeper fails in trunk/0.95 builds

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1482890 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8535 Test for zk leak does not account for unsynchronized access to zk watcher

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Merge remote branch 'origin/trunk' into trunk-gd
HBASE-8519  Backup master will never come up if primary master dies during initialization
            (Jerry He via JD)


git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1482981 13f79535-47bb-0310-9956-ffa450edef68
HBASE-5995 Fix and reenable TestLogRolling.testLogRollOnPipelineRestart

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1483004 13f79535-47bb-0310-9956-ffa450edef68
HBASE-7006 [MTTR] Improve Region Server Recovery Time - Distributed Log Replay; ADDENDUM

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HBASE-8540 SnapshotFileCache logs too many times if snapshot dir doesn't exists

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Merge remote branch 'origin/trunk' into trunk-gd
HBASE-8355: BaseRegionObserver#pre(Compact|Flush|Store)ScannerOpen returns null (Andrew Purtell, Jesse Yates)

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HBASE-8435 Test for zk leak does not account for unsynchronized access to zk watcher: ADDENDUM

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Merge remote branch 'origin/trunk' into trunk-gd
HBASE-8507 HLog tool documentation should be updated to use FSHLog for trunk and 0.95

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1483123 13f79535-47bb-0310-9956-ffa450edef68
allow component lieutenant for component owner in doc

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1483128 13f79535-47bb-0310-9956-ffa450edef68
HBASE-7380  [replication] When transferring queues, check if the peer still
            exists before copying the znodes


git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1483136 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
HBASE-8547. Fix java.lang.RuntimeException: Cached an already cached block (Addendum2 to check cached buffers for equality)

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1483476 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8505 References to split daughters should not be deleted separately from parent META entry

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Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-YAHOO-666-trunk-gd