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https://issues.apache.org/jira/browse/QPID-8040?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16285949#comment-16285949
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Keith Wall commented on QPID-8040:
----------------------------------
Changes look reasonable to me.
> [Broker-J] Uncaught java.nio.channels.CancelledKeyException seen during
> Broker shutdown
> ---------------------------------------------------------------------------------------
>
> Key: QPID-8040
> URL: https://issues.apache.org/jira/browse/QPID-8040
> Project: Qpid
> Issue Type: Bug
> Components: Broker-J
> Affects Versions: qpid-java-broker-7.1.0
> Reporter: Keith Wall
> Assignee: Keith Wall
> Priority: Minor
> Fix For: qpid-java-broker-7.0.1
>
> Attachments:
> TEST-org.apache.qpid.systest.management.amqp.AmqpManagementTest.testInvokeOperationReturningMap
>
>
> The following exception was trapped by the UncaughtExceptionHandler during a
> shutdown of the Broker. The would have caused a abnormal termination. I
> expect it could also happen during a HA virtualhost mastership change too.
> This code hasn't changed, so I think the problem is probably longstanding.
> {noformat}
> 2017-11-10 20:30:04,540 DEBUG [QpidJMS Connection Executor:
> ID:51dec5e7-faf9-4b92-89ec-16396a27a101:1] o.a.q.j.u.ThreadPoolUtils Shutdown
> of ExecutorService:
> java.util.concurrent.ScheduledThreadPoolExecutor@6fbbe33[Terminated, pool
> size = 0, active threads = 0, queued tasks = 0, completed tasks = 24] is
> shutdown: true and terminated: true took: 0.000 seconds.
> 2017-11-10 20:30:04,540 DEBUG [VirtualHostNode-test-Config]
> o.a.q.s.c.u.TaskExecutorImpl Stopping task executor
> virtualhost-test-preferences
> 2017-11-10 20:30:04,544 DEBUG [VirtualHostNode-test-Config]
> o.a.q.s.c.u.TaskExecutorImpl Task executor is stopped
> 2017-11-10 20:30:04,543 ERROR [Selector-Port-amqp]
> o.a.q.t.u.InternalBrokerHolder Uncaught exception from thread
> Selector-Port-amqp
> java.nio.channels.CancelledKeyException: null
> at sun.nio.ch.SelectionKeyImpl.ensureValid(SelectionKeyImpl.java:73)
> at sun.nio.ch.SelectionKeyImpl.interestOps(SelectionKeyImpl.java:82)
> at
> java.nio.channels.spi.AbstractSelectableChannel.register(AbstractSelectableChannel.java:204)
> at
> org.apache.qpid.server.transport.SelectorThread$SelectionTask.processSelectionKeys(SelectorThread.java:240)
> at
> org.apache.qpid.server.transport.SelectorThread$SelectionTask.performSelect(SelectorThread.java:326)
> at
> org.apache.qpid.server.transport.SelectorThread$SelectionTask.run(SelectorThread.java:97)
> at
> org.apache.qpid.server.transport.SelectorThread.run(SelectorThread.java:528)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at
> org.apache.qpid.server.bytebuffer.QpidByteBufferFactory.lambda$null$0(QpidByteBufferFactory.java:464)
> at java.lang.Thread.run(Thread.java:748)
> {noformat}
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