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

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1483011 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8540 SnapshotFileCache logs too many times if snapshot dir doesn't exists

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1483024 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd