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https://issues.apache.org/jira/browse/HBASE-11380?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14039054#comment-14039054
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Andrew Purtell commented on HBASE-11380:
----------------------------------------
Thanks for the patches Ted and [~ccondit]. +1 for commit if the 0.98 patch
resolves the observed issue.
> HRegion lock object is not being released properly, leading to snapshot
> failure
> -------------------------------------------------------------------------------
>
> Key: HBASE-11380
> URL: https://issues.apache.org/jira/browse/HBASE-11380
> Project: HBase
> Issue Type: Bug
> Components: regionserver
> Affects Versions: 0.98.3
> Reporter: Craig Condit
> Assignee: Ted Yu
> Fix For: 0.99.0, 0.98.4
>
> Attachments: 11380-v1.txt, 11380-v2.txt, HBASE-11380-v2-0.98.3.txt
>
>
> Background:
> We are attempting to create ~ 750 table snapshots on a nightly basis for use
> in MR jobs. The jobs are run in batches, with a maximum of around 20 jobs
> running simultaneously.
> We have started to see the following in our region server logs (after < 1 day
> uptime):
> {noformat}
> java.lang.Error: Maximum lock count exceeded
> at
> java.util.concurrent.locks.ReentrantReadWriteLock$Sync.fullTryAcquireShared(ReentrantReadWriteLock.java:531)
> at
> java.util.concurrent.locks.ReentrantReadWriteLock$Sync.tryAcquireShared(ReentrantReadWriteLock.java:491)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1326)
> at
> java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.tryLock(ReentrantReadWriteLock.java:873)
> at org.apache.hadoop.hbase.regionserver.HRegion.lock(HRegion.java:5904)
> at org.apache.hadoop.hbase.regionserver.HRegion.lock(HRegion.java:5891)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.startRegionOperation(HRegion.java:5798)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.startRegionOperation(HRegion.java:5761)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.processRowsWithLocks(HRegion.java:4891)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.mutateRowsWithLocks(HRegion.java:4856)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.mutateRowsWithLocks(HRegion.java:4838)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.mutateRow(HRegion.java:4829)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.mutateRows(HRegionServer.java:4390)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.multi(HRegionServer.java:3362)
> at
> org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:29503)
> at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2012)
> at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:98)
> at
> org.apache.hadoop.hbase.ipc.SimpleRpcScheduler.consumerLoop(SimpleRpcScheduler.java:168)
> at
> org.apache.hadoop.hbase.ipc.SimpleRpcScheduler.access$000(SimpleRpcScheduler.java:39)
> at
> org.apache.hadoop.hbase.ipc.SimpleRpcScheduler$1.run(SimpleRpcScheduler.java:111)
> at java.lang.Thread.run(Thread.java:744)
> {noformat}
> Not sure of the cause, but the result is that snapshots cannot be created. We
> see this in our client logs:
> {noformat}
> Exception in thread "main"
> org.apache.hadoop.hbase.snapshot.HBaseSnapshotException:
> org.apache.hadoop.hbase.snapshot.HBaseSnapshotException: Snapshot {
> ss=test-snapshot-20140619143753294 table=test type=FLUSH } had an error.
> Procedure test-snapshot-20140619143753294 {
> waiting=[p3plpadata038.internal,60020,1403140682587,
> p3plpadata056.internal,60020,1403140865123,
> p3plpadata072.internal,60020,1403141022569]
> done=[p3plpadata023.internal,60020,1403140552227,
> p3plpadata009.internal,60020,1403140487826] }
> at
> org.apache.hadoop.hbase.master.snapshot.SnapshotManager.isSnapshotDone(SnapshotManager.java:342)
> at
> org.apache.hadoop.hbase.master.HMaster.isSnapshotDone(HMaster.java:2907)
> at
> org.apache.hadoop.hbase.protobuf.generated.MasterProtos$MasterService$2.callBlockingMethod(MasterProtos.java:40494)
> at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2012)
> at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:98)
> at
> org.apache.hadoop.hbase.ipc.FifoRpcScheduler$1.run(FifoRpcScheduler.java:73)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:744)
> Caused by:
> org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable via
> p3plpadata060.internal,60020,1403140935958:org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable:
>
> at
> org.apache.hadoop.hbase.errorhandling.ForeignExceptionDispatcher.rethrowException(ForeignExceptionDispatcher.java:83)
> at
> org.apache.hadoop.hbase.master.snapshot.TakeSnapshotHandler.rethrowExceptionIfFailed(TakeSnapshotHandler.java:320)
> at
> org.apache.hadoop.hbase.master.snapshot.SnapshotManager.isSnapshotDone(SnapshotManager.java:332)
> ... 10 more
> Caused by:
> org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable:
> at
> org.apache.hadoop.hbase.procedure.Subprocedure.cancel(Subprocedure.java:270)
> at
> org.apache.hadoop.hbase.procedure.ProcedureMember.submitSubprocedure(ProcedureMember.java:171)
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs.startNewSubprocedure(ZKProcedureMemberRpcs.java:214)
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs.waitForNewProcedures(ZKProcedureMemberRpcs.java:172)
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs.access$100(ZKProcedureMemberRpcs.java:55)
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs$1.nodeChildrenChanged(ZKProcedureMemberRpcs.java:107)
> at
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.process(ZooKeeperWatcher.java:348)
> at
> org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:522)
> at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498)
> at sun.reflect.GeneratedConstructorAccessor17.newInstance(Unknown
> Source)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
> at
> org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:106)
> at
> org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:95)
> at
> org.apache.hadoop.hbase.client.RpcRetryingCaller.translateException(RpcRetryingCaller.java:207)
> at
> org.apache.hadoop.hbase.client.RpcRetryingCaller.translateException(RpcRetryingCaller.java:221)
> at
> org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:121)
> at
> org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:90)
> at
> org.apache.hadoop.hbase.client.HBaseAdmin.executeCallable(HBaseAdmin.java:3327)
> at
> org.apache.hadoop.hbase.client.HBaseAdmin.snapshot(HBaseAdmin.java:2722)
> at
> org.apache.hadoop.hbase.client.HBaseAdmin.snapshot(HBaseAdmin.java:2655)
> at
> org.apache.hadoop.hbase.client.HBaseAdmin.snapshot(HBaseAdmin.java:2596)
> at
> [SNIP]
> Caused by:
> org.apache.hadoop.hbase.ipc.RemoteWithExtrasException(org.apache.hadoop.hbase.snapshot.HBaseSnapshotException):
> org.apache.hadoop.hbase.snapshot.HBaseSnapshotException: Snapshot {
> ss=test-snapshot-20140619143753294 table=test type=FLUSH } had an error.
> Procedure test-snapshot-20140619143753294 {
> waiting=[p3plpadata038.internal,60020,1403140682587,
> p3plpadata056.internal,60020,1403140865123,
> p3plpadata072.internal,60020,1403141022569]
> done=[p3plpadata023.internal,60020,1403140552227,
> p3plpadata009.internal,60020,1403140487826] }
> at
> org.apache.hadoop.hbase.master.snapshot.SnapshotManager.isSnapshotDone(SnapshotManager.java:342)
> at
> org.apache.hadoop.hbase.master.HMaster.isSnapshotDone(HMaster.java:2907)
> at
> org.apache.hadoop.hbase.protobuf.generated.MasterProtos$MasterService$2.callBlockingMethod(MasterProtos.java:40494)
> at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2012)
> at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:98)
> at
> org.apache.hadoop.hbase.ipc.FifoRpcScheduler$1.run(FifoRpcScheduler.java:73)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:744)
> Caused by:
> org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable via
> p3plpadata060.internal,60020,1403140935958:org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable:
>
> at
> org.apache.hadoop.hbase.errorhandling.ForeignExceptionDispatcher.rethrowException(ForeignExceptionDispatcher.java:83)
> at
> org.apache.hadoop.hbase.master.snapshot.TakeSnapshotHandler.rethrowExceptionIfFailed(TakeSnapshotHandler.java:320)
> at
> org.apache.hadoop.hbase.master.snapshot.SnapshotManager.isSnapshotDone(SnapshotManager.java:332)
> ... 10 more
> Caused by:
> org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable:
> at
> org.apache.hadoop.hbase.procedure.Subprocedure.cancel(Subprocedure.java:270)
> at
> org.apache.hadoop.hbase.procedure.ProcedureMember.submitSubprocedure(ProcedureMember.java:171)
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs.startNewSubprocedure(ZKProcedureMemberRpcs.java:214)
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs.waitForNewProcedures(ZKProcedureMemberRpcs.java:172)
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs.access$100(ZKProcedureMemberRpcs.java:55)
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs$1.nodeChildrenChanged(ZKProcedureMemberRpcs.java:107)
> at
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.process(ZooKeeperWatcher.java:348)
> at
> org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:522)
> at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498)
> at org.apache.hadoop.hbase.ipc.RpcClient.call(RpcClient.java:1453)
> at
> org.apache.hadoop.hbase.ipc.RpcClient.callBlockingMethod(RpcClient.java:1657)
> at
> org.apache.hadoop.hbase.ipc.RpcClient$BlockingRpcChannelImplementation.callBlockingMethod(RpcClient.java:1715)
> at
> org.apache.hadoop.hbase.protobuf.generated.MasterProtos$MasterService$BlockingStub.isSnapshotDone(MasterProtos.java:42861)
> at
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation$5.isSnapshotDone(HConnectionManager.java:2048)
> at
> org.apache.hadoop.hbase.client.HBaseAdmin$24.call(HBaseAdmin.java:2725)
> at
> org.apache.hadoop.hbase.client.HBaseAdmin$24.call(HBaseAdmin.java:2722)
> at
> org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:114)
> ... 16 more
> {noformat}
>
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