[ 
https://issues.apache.org/jira/browse/QPID-8040?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Keith Wall updated QPID-8040:
-----------------------------
    Status: Open  (was: Reviewable)

We had another one of these failures yesterday. 2017-12-21.  I think our 
guarding may be one level too deep.

{code}
Thread terminated due to uncaught 
exceptionjava.nio.channels.CancelledKeyException
        at sun.nio.ch.SelectionKeyImpl.ensureValid(SelectionKeyImpl.java:73)
        at sun.nio.ch.SelectionKeyImpl.readyOps(SelectionKeyImpl.java:87)
        at java.nio.channels.SelectionKey.isAcceptable(SelectionKey.java:360)
        at 
org.apache.qpid.server.transport.SelectorThread$SelectionTask.processSelectionKeys(SelectorThread.java:180)
        at 
org.apache.qpid.server.transport.SelectorThread$SelectionTask.performSelect(SelectorThread.java:336)
        at 
org.apache.qpid.server.transport.SelectorThread$SelectionTask.run(SelectorThread.java:97)
        at 
org.apache.qpid.server.transport.SelectorThread.run(SelectorThread.java:538)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$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)
{code}


> [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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