HBASE-8246 Backport HBASE-6318 to 0.94 where SplitLogWorker exits due to ConcurrentModificationException



git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/0.94@1463821 13f79535-47bb-0310-9956-ffa450edef68
HBASE-7401 Remove warning message about running 'hbase migrate'


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HBASE-8229 Replication code logs like crazy if a target table cannot be found.

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HBASE-8230 Possible NPE on regionserver abort if replication service has not been started

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HBASE-8188 Avoid unnecessary row compare in StoreScanner

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HBASE-8231 delete tests in table_tests.rb(TestShell) always running on empty table

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HBASE-7599  Port HBASE-6066 (low hanging read path improvements) to 0.94 - retry (Devaraj Das)

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HBASE-8259 Snapshot backport in 0.94.6 breaks rolling restarts

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HBASE-8231 delete tests in table_tests.rb(TestShell) always running on empty table; REVERT

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HBASE-8127 Region of a disabling or disabled table could be stuck in transition state when RS dies during Master initialization (Rajeshbabu)



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HBASE-7817: Suggested JDWP debug options in hbase-env.sh are wrong (Vasu Mariyala)

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HBASE-8231 delete tests in table_tests.rb(TestShell) always running on empty table. (rajeshbabu and LarsH)

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HBASE-8211 Support for NN HA for 0.94 (Himanshu)

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HBASE-8169 TestMasterFailover#testMasterFailoverWithMockedRITOnDeadRS may fail due to regions randomly assigned to a RS (Jeffrey Zhong)

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HBASE-8092 bulk assignment in 0.94 doesn't handle ZK errors very well

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HBASE-8179. Fixes a problem to do with the json response for the cluster status

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HBASE-7415 Add task information to snapshot operation (Jesse Yates)

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HBASE-7615 Add metrics for snapshots

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HBASE-8150 server should not produce RAITE for already-opening region in 0.94 (because master retry logic handles this case poorly)

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HBASE-8260 create generic integration test for trunk and 94 that is more deterministic, can be run for longer and is less aggressive

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