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Posted to issues@phoenix.apache.org by "Karan Mehta (JIRA)" <ji...@apache.org> on 2019/04/25 05:37:00 UTC
[jira] [Commented] (PHOENIX-5191) commit thrown error info:
java.util.ConcurrentModificationException
[ https://issues.apache.org/jira/browse/PHOENIX-5191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16825738#comment-16825738 ]
Karan Mehta commented on PHOENIX-5191:
--------------------------------------
[~abhishek.chouhan] is right here. All JDBC objects, PhoenixConnection, PhoenixStatement, PhoenixPreparedStatement etc are not thread safe. These are light weight objects, so multiple instances of those are fine, as long as leaks don't happen. Don't try to pool these connections either. Closing this as not a bug. [~1028344078@qq.com]
> commit thrown error info: java.util.ConcurrentModificationException
> --------------------------------------------------------------------
>
> Key: PHOENIX-5191
> URL: https://issues.apache.org/jira/browse/PHOENIX-5191
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 4.10.0, 4.11.0, 4.12.0, 4.14.0
> Reporter: Jepson
> Priority: Critical
> Labels: performance
> Original Estimate: 96h
> Remaining Estimate: 96h
>
> {code:java}
> java.util.ConcurrentModificationException
> at java.util.HashMap$HashIterator.nextNode(HashMap.java:1442)
> at java.util.HashMap$EntryIterator.next(HashMap.java:1476)
> at java.util.HashMap$EntryIterator.next(HashMap.java:1474)
> at org.apache.phoenix.execute.MutationState.generateMutations(MutationState.java:645)
> at org.apache.phoenix.execute.MutationState.addRowMutations(MutationState.java:519)
> at org.apache.phoenix.execute.MutationState.send(MutationState.java:1005)
> at org.apache.phoenix.execute.MutationState.send(MutationState.java:1514)
> at org.apache.phoenix.execute.MutationState.commit(MutationState.java:1337)
> at org.apache.phoenix.jdbc.PhoenixConnection$3.call(PhoenixConnection.java:683)
> at org.apache.phoenix.jdbc.PhoenixConnection$3.call(PhoenixConnection.java:679)
> at org.apache.phoenix.call.CallRunner.run(CallRunner.java:53)
> at org.apache.phoenix.jdbc.PhoenixConnection.commit(PhoenixConnection.java:679)
> at com.jiuye.mcp.agent.runner.impl.PhoenixTargetRunnerImpl.cronScheduleMessageBatchCommit(PhoenixTargetRunnerImpl.java:414)
> at sun.reflect.GeneratedMethodAccessor73.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:65)
> at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
> at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
> at java.util.concurrent.Executors$RunnableAdapter.call$$$capture(Executors.java:511)
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java)
> at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266)
> at java.util.concurrent.FutureTask.run(FutureTask.java)
> at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
> at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> 2019-03-13 10:15:15.060 [pool-2-thread-1] INFO org.apache.phoenix.execute.MutationState - Abort successful
> 2019-03-13 10:15:15.061 [pool-2-thread-1] ERROR c.j.mcp.agent.runner.impl.PhoenixTargetRunnerImpl - cronScheduleMessageBatchCommit:java.util.ConcurrentModificationException{code}
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