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  1. ActiveMQ
  2. AMQ-4297

stomp deadlock on commit

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 5.8.0
    • Fix Version/s: 5.8.0
    • Component/s: STOMP
    • Labels:
      None
    • Regression:
      Unit Test Broken

      Description

      Found one Java-level deadlock:
      =============================
      "ActiveMQ Transport: ssl://27.0.0.1:63934":
        waiting for ownable synchronizer 7f40f40b0, (a java.util.concurrent.locks.ReentrantLock$NonfairSync),
        which is held by "ActiveMQ BrokerService[localhost] Task-2"
      "ActiveMQ BrokerService[localhost] Task-2":
        waiting to lock monitor 7f90ca08ea30 (object 7f35b97b0, a org.apache.activemq.transport.stomp.StompSubscription),
        which is held by "ActiveMQ Transport: ssl://27.0.0.1:63934"
      
      Java stack information for the threads listed above:
      ===================================================
      "ActiveMQ Transport: ssl://27.0.0.1:63934":
      	at sun.misc.Unsafe.park(Native Method)
      	- parking to wait for  <7f40f40b0> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)
      	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:156)
      	at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:811)
      	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:842)
      	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1178)
      	at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:186)
      	at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:262)
      	at org.apache.activemq.transport.MutexTransport.onCommand(MutexTransport.java:43)
      	at org.apache.activemq.transport.AbstractInactivityMonitor.onCommand(AbstractInactivityMonitor.java:288)
      	at org.apache.activemq.transport.stomp.StompTransportFilter.sendToActiveMQ(StompTransportFilter.java:84)
      	at org.apache.activemq.transport.stomp.StompSubscription.onStompCommit(StompSubscription.java:122)
      	- locked <7f35b97b0> (a org.apache.activemq.transport.stomp.StompSubscription)
      	at org.apache.activemq.transport.stomp.ProtocolConverter.onStompCommit(ProtocolConverter.java:502)
      	at org.apache.activemq.transport.stomp.ProtocolConverter.onStompCommand(ProtocolConverter.java:241)
      	at org.apache.activemq.transport.stomp.StompTransportFilter.onCommand(StompTransportFilter.java:73)
      	at org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:83)
      	at org.apache.activemq.transport.tcp.SslTransport.doConsume(SslTransport.java:91)
      	at org.apache.activemq.transport.stomp.StompSslTransportFactory$1$1.doConsume(StompSslTransportFactory.java:70)
      	at org.apache.activemq.transport.tcp.TcpTransport.doRun(TcpTransport.java:214)
      	at org.apache.activemq.transport.tcp.TcpTransport.run(TcpTransport.java:196)
      	at java.lang.Thread.run(Thread.java:680)
      "ActiveMQ BrokerService[localhost] Task-2":
      	at org.apache.activemq.transport.stomp.StompSubscription.onMessageDispatch(StompSubscription.java:70)
      	- waiting to lock <7f35b97b0> (a org.apache.activemq.transport.stomp.StompSubscription)
      	at org.apache.activemq.transport.stomp.ProtocolConverter.onActiveMQCommand(ProtocolConverter.java:857)
      	at org.apache.activemq.transport.stomp.StompTransportFilter.oneway(StompTransportFilter.java:61)
      	at org.apache.activemq.transport.AbstractInactivityMonitor.doOnewaySend(AbstractInactivityMonitor.java:322)
      	at org.apache.activemq.transport.AbstractInactivityMonitor.oneway(AbstractInactivityMonitor.java:304)
      	at org.apache.activemq.transport.MutexTransport.oneway(MutexTransport.java:68)
      	at org.apache.activemq.broker.TransportConnection.dispatch(TransportConnection.java:1378)
      	at org.apache.activemq.broker.TransportConnection.processDispatch(TransportConnection.java:897)
      	at org.apache.activemq.broker.TransportConnection.iterate(TransportConnection.java:943)
      	at org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:129)
      	at org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:47)
      	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
      	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
      	at java.lang.Thread.run(Thread.java:680)
      
      Found 1 deadlock.
      

      from org.apache.activemq.transport.stomp.StompTest#testPrefetchSize

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            • Assignee:
              gtully Gary Tully
              Reporter:
              gtully Gary Tully
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              • Created:
                Updated:
                Resolved: