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From Eduardo Corral <ecr...@tid.es>
Subject deadlock in ActiveMQ 4.1.1 broker?
Date Fri, 14 Sep 2007 08:44:31 GMT
Hi everyone

We're using ActiveMQ 4.1.1 Broker, embedded in our server, and while 
trying to stop it, we get a deadlock:

Java stack information for the threads listed above:
===================================================
"ActiveMQ Transport: tcp:///127.0.0.1:64319":
        at 
org.apache.activemq.transport.InactivityMonitor.oneway(InactivityMonitor.java:137)
        - waiting to lock <0x9ac103c8> (a 
org.apache.activemq.transport.InactivityMonitor$2)
        at 
org.apache.activemq.transport.TransportFilter.oneway(TransportFilter.java:80)
        at 
org.apache.activemq.transport.WireFormatNegotiator.oneway(WireFormatNegotiator.java:93)
        at 
org.apache.activemq.transport.MutexTransport.oneway(MutexTransport.java:47)
        - locked <0x9ac0fdf8> (a java.lang.Object)
        at 
org.apache.activemq.broker.TransportConnection.dispatch(TransportConnection.java:1138)
        at 
org.apache.activemq.broker.TransportConnection.processDispatch(TransportConnection.java:805)
        at 
org.apache.activemq.broker.TransportConnection.dispatchSync(TransportConnection.java:770)
        at 
org.apache.activemq.broker.region.PrefetchSubscription.dispatch(PrefetchSubscription.java:404)
        at 
org.apache.activemq.broker.region.QueueSubscription.dispatch(QueueSubscription.java:172)
        at 
org.apache.activemq.broker.region.PrefetchSubscription.add(PrefetchSubscription.java:129)
        - locked <0x9ac177a8> (a 
org.apache.activemq.broker.region.QueueSubscription)
        at 
org.apache.activemq.broker.region.Queue.addSubscription(Queue.java:191)
        - locked <0x9a94e5a8> (a 
org.apache.activemq.broker.region.cursors.VMPendingMessageCursor)
        at 
org.apache.activemq.broker.region.AbstractRegion.addConsumer(AbstractRegion.java:234)
        - locked <0x9ac1fae8> (a java.lang.Object)
        at 
org.apache.activemq.broker.region.RegionBroker.addConsumer(RegionBroker.java:337)
        at 
org.apache.activemq.broker.BrokerFilter.addConsumer(BrokerFilter.java:86)
        at 
org.apache.activemq.advisory.AdvisoryBroker.addConsumer(AdvisoryBroker.java:77)
        at 
org.apache.activemq.broker.BrokerFilter.addConsumer(BrokerFilter.java:86)
        at 
org.apache.activemq.broker.MutableBrokerFilter.addConsumer(MutableBrokerFilter.java:96)
        at 
org.apache.activemq.broker.TransportConnection.processAddConsumer(TransportConnection.java:586)
        - locked <0x9ac0d128> (a 
org.apache.activemq.broker.jmx.ManagedTransportConnection)
        at 
org.apache.activemq.command.ConsumerInfo.visit(ConsumerInfo.java:313)
        at 
org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:294)
        at 
org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:185)
        at 
org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:65)
        at 
org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:133)
        at 
org.apache.activemq.transport.InactivityMonitor.onCommand(InactivityMonitor.java:127)
        - locked <0x9ac103b8> (a 
org.apache.activemq.transport.InactivityMonitor$1)
        at 
org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:84)
        at 
org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:137)
        at java.lang.Thread.run(Thread.java:595)
"ActiveMQ Scheduler":
        at 
org.apache.activemq.broker.jmx.ManagedTransportConnection.stop(ManagedTransportConnection.java:64)
        - waiting to lock <0x9ac0d128> (a 
org.apache.activemq.broker.jmx.ManagedTransportConnection)
        at 
org.apache.activemq.util.ServiceSupport.dispose(ServiceSupport.java:40)
        at 
org.apache.activemq.broker.TransportConnection.serviceTransportException(TransportConnection.java:216)
        at 
org.apache.activemq.broker.TransportConnection$1.onException(TransportConnection.java:192)
        at 
org.apache.activemq.transport.TransportFilter.onException(TransportFilter.java:96)
        at 
org.apache.activemq.transport.TransportFilter.onException(TransportFilter.java:96)
        at 
org.apache.activemq.transport.WireFormatNegotiator.onException(WireFormatNegotiator.java:147)
        at 
org.apache.activemq.transport.InactivityMonitor.onException(InactivityMonitor.java:159)
        at 
org.apache.activemq.transport.InactivityMonitor.writeCheck(InactivityMonitor.java:84)
        - locked <0x9ac103c8> (a 
org.apache.activemq.transport.InactivityMonitor$2)
        at 
org.apache.activemq.transport.InactivityMonitor.access$100(InactivityMonitor.java:35)
        at 
org.apache.activemq.transport.InactivityMonitor$2.run(InactivityMonitor.java:57)
        at 
edu.emory.mathcs.backport.java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:431)
        at 
edu.emory.mathcs.backport.java.util.concurrent.FutureTask.runAndReset(FutureTask.java:198)
        at 
edu.emory.mathcs.backport.java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java
:189)
        at 
edu.emory.mathcs.backport.java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:213)
        at 
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
        at 
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
        at java.lang.Thread.run(Thread.java:595)

Found 1 deadlock.

Is this a known issue? I couldn't find the same kind of deadlock on the 
issue tracker.

Thank you and best regards
Eduardo



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