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) -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira