terry zhang created HBASE-7451:
----------------------------------
Summary: [snapshot] regionserver will be deadlock when
GlobalSnapshotOperation timeout happen
Key: HBASE-7451
URL: https://issues.apache.org/jira/browse/HBASE-7451
Project: HBase
Issue Type: Bug
Components: snapshots
Reporter: terry zhang
Assignee: terry zhang
Hi Matteo Bertozzi and Jesse Yates, My observation is base on code in github ：
https://github.com/matteobertozzi/hbase/
If we create a snapshot and meet regionserver timeout. Rs will be lock and can
not put any data. Please take a look at log below :
// regionserver snapshot timeout
org.apache.hadoop.hbase.server.commit.distributed.DistributedCommitException:
org.apache.hadoop.hbase.server.errorhandling.exception.OperationAttemptTimeoutException:
Timeout elapsed! Start:1356518666984, End:1356518667584, diff:600, max:600 ms
at
org.apache.hadoop.hbase.server.commit.distributed.DistributedThreePhaseCommitErrorDispatcher.wrap(DistributedThreePhaseCommitErrorDispatcher.java:135)
at
org.apache.hadoop.hbase.server.commit.distributed.DistributedThreePhaseCommitErrorDispatcher.operationTimeout(DistributedThreePhaseCommitErrorDispatcher.java:71)
at
org.apache.hadoop.hbase.server.commit.ThreePhaseCommit$1.receiveError(ThreePhaseCommit.java:92)
at
org.apache.hadoop.hbase.server.commit.ThreePhaseCommit$1.receiveError(ThreePhaseCommit.java:89)
at
org.apache.hadoop.hbase.server.errorhandling.OperationAttemptTimer$1.run(OperationAttemptTimer.java:71)
at java.util.TimerThread.mainLoop(Timer.java:512)
at java.util.TimerThread.run(Timer.java:462)
Caused by:
org.apache.hadoop.hbase.server.errorhandling.exception.OperationAttemptTimeoutException:
Timeout elapsed! Start:1356518666984, End:1356518667584, diff:600, max:600 ms
... 3 more
2012-12-26 18:44:57,211 DEBUG
org.apache.hadoop.hbase.server.commit.TwoPhaseCommit: Running cleanup phase.
2012-12-26 18:44:57,211 DEBUG
org.apache.hadoop.hbase.regionserver.snapshot.operation.SnapshotOperation:
Cleanup snapshot - handled in sub-tasks on error
2012-12-26 18:44:57,212 DEBUG org.apache.hadoop.hbase.serv
//Waiting for 'commit allowed' latch and do not exist
2012-12-26 18:44:57,211 DEBUG
org.apache.hadoop.hbase.server.commit.TwoPhaseCommit: Running cleanup phase.
2012-12-26 18:44:57,211 DEBUG
org.apache.hadoop.hbase.regionserver.snapshot.operation.SnapshotOperation:
Cleanup snapshot - handled in sub-tasks on error
2012-12-26 18:44:57,212 DEBUG
org.apache.hadoop.hbase.server.commit.TwoPhaseCommit: Running finish phase.
2012-12-26 18:44:57,212 DEBUG
org.apache.hadoop.hbase.regionserver.snapshot.operation.SnapshotOperation:
Finish snapshot - handling in subtasks on error
2012-12-26 18:44:57,212 WARN
org.apache.hadoop.hbase.server.errorhandling.OperationAttemptTimer: Timer
already marked completed, ignoring!
2012-12-26 18:45:01,990 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
2012-12-26 18:45:06,990 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
2012-12-26 18:45:11,991 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
2012-12-26 18:45:16,991 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
2012-12-26 18:45:17,002 INFO
org.apache.hadoop.hbase.server.commit.distributed.zookeeper.ZKTwoPhaseCommitCohortMemberController:
Received children changed event:/hbase-TERRY-73/online-snapshot/prepare
2012-12-26 18:45:17,002 INFO
org.apache.hadoop.hbase.server.commit.distributed.zookeeper.ZKTwoPhaseCommitCohortMemberController:
Recieved start event.
2012-12-26 18:45:17,002 DEBUG
org.apache.hadoop.hbase.server.commit.distributed.zookeeper.ZKTwoPhaseCommitCohortMemberController:
Looking for new operations under znode:/hbase-TERRY-73/online-snapshot/prepare
2012-12-26 18:45:17,003 INFO
org.apache.hadoop.hbase.server.commit.distributed.zookeeper.ZKTwoPhaseCommitCohortMemberController:
Received children changed event:/hbase-TERRY-73/online-snapshot/abort
2012-12-26 18:45:17,003 INFO
org.apache.hadoop.hbase.server.commit.distributed.zookeeper.ZKTwoPhaseCommitCohortMemberController:
Recieved abort event.
2012-12-26 18:45:17,003 DEBUG
org.apache.hadoop.hbase.server.commit.distributed.zookeeper.ZKTwoPhaseCommitCohortMemberController:
Checking for aborted operations on node:/hbase-TERRY-73/online-snapshot/abort
2012-12-26 18:45:21,991 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
2012-12-26 18:45:26,992 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
2012-12-26 18:45:31,992 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
2012-12-26 18:45:36,992 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
2012-12-26 18:45:41,992 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
2012-12-26 18:45:43,481 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache:
LRU Stats: total=11.77 MB, free=1.39 GB, max=1.4 GB, blocks=5, accesses=96,
hits=91, hitRatio=94.79%, cachingAccesses=96, cachingHits=91,
cachingHitsRatio=94.79%, evictions=0, evicted=0, evictedPerRun=NaN
2012-12-26 18:45:46,993 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
2012-12-26 18:45:51,993 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
2012-12-26 18:45:56,993 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
2012-12-26 18:46:01,994 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
2012-12-26 18:46:06,994 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
2012-12-26 18:46:11,994 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
2012-12-26 18:46:16,994 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
2012-12-26 18:46:21,995 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
2012-12-26 18:46:26,995 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
2012-12-26 18:46:31,995 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
2012-12-26 18:46:36,996 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
2012-12-26 18:46:41,996 DEBUG org.apache.hadoop.hbase.util.Threads: Waiting for
'commit allowed' latch. (sleep:5000 ms)
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