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https://issues.apache.org/jira/browse/HBASE-7651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13562082#comment-13562082
]
Jonathan Hsieh commented on HBASE-7651:
---------------------------------------
thanks for the reminder on the TODO -- missed it on the clean up pass. I'll
restore the interrupt flag. I'll pull the unrelated logs/spelling fixes to
this into another patch.
If you all don't mind, I'm going to punt on writing a unit test for this --
I've spent an hour or two on this and it is non-trivial. Instead, here's the
an excerpt of the system level test I've bene using that triggered the problem
(it happened usually within 10 snapshot attempts on a 20 node cluster).
{code}
SSCOUNT=30
# start loading data
hbase org.apache.hadoop.hbase.PerformanceEvaluation --rows=$ROWS randomWrite 1
2> report.perf-eval.err &
# sleep a little to let the table be created
sleep 15
# fail error if Perf eval table is missing.
echo "Kernel.exit 127 if list('TestTable').size == 0" | hbase shell
echo "==== take snapshots"
# take snapshots
# pe-snapshots.sh
echo "(1..$SSCOUNT).map {|x| snapshot 'TestTable', 'pe-'+x.to_s}" | hbase shell
# fail error if no snapshot are taken, some may fail (this is ok)
echo "Kernel.exit 127 if list_snapshots('pe-.*').size == 0" | hbase shell
{code}
> RegionServerSnapshotManager fails with CancellationException if previous
> snapshot fails in per region task
> ----------------------------------------------------------------------------------------------------------
>
> Key: HBASE-7651
> URL: https://issues.apache.org/jira/browse/HBASE-7651
> Project: HBase
> Issue Type: Sub-task
> Components: snapshots
> Affects Versions: hbase-7290
> Reporter: Jonathan Hsieh
> Assignee: Jonathan Hsieh
> Priority: Blocker
> Attachments: hbase-7651.patch
>
>
> I've reproduced this problem consistently on a 20 node cluster.
> The first run fails on a node (jon-snaphots-2 in this case) to take snapshot
> due to a NotServingRegionException (this is acceptable)
> {code}
> 2013-01-23 13:32:48,631 DEBUG
> org.apache.hadoop.hbase.errorhandling.ForeignExceptionDispatcher: accepting
> received exception
> org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable via
> jon-snapshots-2.ent.cloudera.com,22101,1358976524369:org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable:
> org.apache.hadoop.hbase.NotServingRegionException:
> TestTable,0002493652,1358976652443.b858147ad87a7812ac9a73dd8fef36ad. is
> closing
> at
> org.apache.hadoop.hbase.errorhandling.ForeignException.deserialize(ForeignException.java:184)
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureCoordinatorRpcs.abort(ZKProcedureCoordinatorRpcs.java:240)
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureCoordinatorRpcs$1.nodeCreated(ZKProcedureCoordinatorRpcs.java:182)
> at
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.process(ZooKeeperWatcher.java:294)
> at
> org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:519)
> at
> org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:495)
> Caused by:
> org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable:
> org.apache.hadoop.hbase.NotServingRegionException:
> TestTable,0002493652,1358976652443.b858147ad87a7812ac9a73dd8fef36ad. is
> closing
> at
> org.apache.hadoop.hbase.regionserver.snapshot.RegionServerSnapshotManager$SnapshotSubprocedurePool.waitForOutstandingTasks(RegionServerSnapshotManager.java:343)
> at
> org.apache.hadoop.hbase.regionserver.snapshot.FlushSnapshotSubprocedure.flushSnapshot(FlushSnapshotSubprocedure.java:107)
> at
> org.apache.hadoop.hbase.regionserver.snapshot.FlushSnapshotSubprocedure.insideBarrier(FlushSnapshotSubprocedure.java:123)
> at
> org.apache.hadoop.hbase.procedure.Subprocedure.call(Subprocedure.java:181)
> at
> org.apache.hadoop.hbase.procedure.Subprocedure.call(Subprocedure.java:52)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> 2013-01-23 13:32:48,631 DEBUG
> org.apache.hadoop.hbase.errorhandling.ForeignExceptionDispatcher: Recieved
> error, notifying listeners...
> 2013-01-23 13:32:48,730 ERROR org.apache.hadoop.hbase.procedure.Procedure:
> Procedure 'pe-6' execution failed!
> org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable via
> jon-snapshots-2.ent.cloudera.com,22101,1358976524369:org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable:
> org.apache.hadoop.hbase.NotServingRegionException:
> TestTable,0002493652,1358976652443.b858147ad87a7812ac9a73dd8fef36ad. is
> closing
> at
> org.apache.hadoop.hbase.errorhandling.ForeignExceptionDispatcher.rethrowException(ForeignExceptionDispatcher.java:84)
> at
> org.apache.hadoop.hbase.procedure.Procedure.waitForLatch(Procedure.java:357)
> at
> org.apache.hadoop.hbase.procedure.Procedure.call(Procedure.java:203)
> at org.apache.hadoop.hbase.procedure.Procedure.call(Procedure.java:68)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> Caused by:
> org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable:
> org.apache.hadoop.hbase.NotServingRegionException:
> TestTable,0002493652,1358976652443.b858147ad87a7812ac9a73dd8fef36ad. is
> closing
> at
> org.apache.hadoop.hbase.regionserver.snapshot.RegionServerSnapshotManager$SnapshotSubprocedurePool.waitForOutstandingTasks(RegionServerSnapshotManager.java:343)
> at
> org.apache.hadoop.hbase.regionserver.snapshot.FlushSnapshotSubprocedure.flushSnapshot(FlushSnapshotSubprocedure.java:107)
> at
> org.apache.hadoop.hbase.regionserver.snapshot.FlushSnapshotSubprocedure.insideBarrier(FlushSnapshotSubprocedure.java:123)
> at
> org.apache.hadoop.hbase.procedure.Subprocedure.call(Subprocedure.java:181)
> at
> org.apache.hadoop.hbase.procedure.Subprocedure.call(Subprocedure.java:52)
> ... 5 more
> {code}
> Subsequent snapshot attempts that require jon-snapshot-2 to participate fail
> like this:
> {code}
> org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable via
> jon-snapshots-2.ent.cloudera.com,22101,1358976524369:org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable:
> java.util.concurrent.CancellationException
> at
> org.apache.hadoop.hbase.errorhandling.ForeignException.deserialize(ForeignException.java:184)
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureCoordinatorRpcs.abort(ZKProcedureCoordinatorRpcs.java:240)
> at
> org.apache.hadoop.hbase.procedure.ZKProcedureCoordinatorRpcs$1.nodeCreated(ZKProcedureCoordinatorRpcs.java:182)
> at
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.process(ZooKeeperWatcher.java:294)
> at
> org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:519)
> at
> org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:495)
> Caused by:
> org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable:
> java.util.concurrent.CancellationException
> at
> org.apache.hadoop.hbase.procedure.Subprocedure.cancel(Subprocedure.java:270)
> at
> org.apache.hadoop.hbase.procedure.Subprocedure.call(Subprocedure.java:202)
> at
> org.apache.hadoop.hbase.procedure.Subprocedure.call(Subprocedure.java:52)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> 2013-01-23 13:32:59,557 DEBUG
> org.apache.hadoop.hbase.errorhandling.ForeignExceptionDispatcher: Recieved
> error, notifying listeners...
> 2013-01-23 13:32:59,810 ERROR org.apache.hadoop.hbase.procedure.Procedure:
> Procedure 'pe-7' execution failed!
> org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable via
> jon-snapshots-2.ent.cloudera.com,22101,1358976524369:org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable:
> java.util.concurrent.CancellationException
> at
> org.apache.hadoop.hbase.errorhandling.ForeignExceptionDispatcher.rethrowException(ForeignExceptionDispatcher.java:84)
> at
> org.apache.hadoop.hbase.procedure.Procedure.waitForLatch(Procedure.java:357)
> at
> org.apache.hadoop.hbase.procedure.Procedure.call(Procedure.java:203)
> at org.apache.hadoop.hbase.procedure.Procedure.call(Procedure.java:68)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> Caused by:
> org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable:
> java.util.concurrent.CancellationException
> at
> org.apache.hadoop.hbase.procedure.Subprocedure.cancel(Subprocedure.java:270)
> at
> org.apache.hadoop.hbase.procedure.Subprocedure.call(Subprocedure.java:202)
> at
> org.apache.hadoop.hbase.procedure.Subprocedure.call(Subprocedure.java:52)
> ... 5 more
> {code}
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