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  1. ActiveMQ
  2. AMQ-4328

Cross talk over duplex network connection can lead to blocking

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      with active forwarding in both directions a duplex network connector can block. in 5.8, threads of the form:

      "ActiveMQ BrokerService[xx] Task-10" daemon prio=10 tid=0xb35d1c00 nid=0xc64 runnable [0xb3369000]
         java.lang.Thread.State: RUNNABLE
      	at java.net.SocketOutputStream.socketWrite0(Native Method)
      	at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
      	at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
      	at org.apache.activemq.transport.tcp.TcpBufferedOutputStream.flush(TcpBufferedOutputStream.java:115)
      	at java.io.DataOutputStream.flush(DataOutputStream.java:106)
      	at org.apache.activemq.transport.tcp.TcpTransport.oneway(TcpTransport.java:176)
      	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.TransportFilter.oneway(TransportFilter.java:85)
      	at org.apache.activemq.transport.WireFormatNegotiator.oneway(WireFormatNegotiator.java:104)
      	at org.apache.activemq.transport.MutexTransport.oneway(MutexTransport.java:68)
      	at org.apache.activemq.transport.ResponseCorrelator.asyncRequest(ResponseCorrelator.java:81)
      	at org.apache.activemq.network.DemandForwardingBridgeSupport.serviceLocalCommand(DemandForwardingBridgeSupport.java:994)
      	at org.apache.activemq.network.DemandForwardingBridgeSupport$2.onCommand(DemandForwardingBridgeSupport.java:201)
      	at org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:116)
      	at org.apache.activemq.transport.MutexTransport.onCommand(MutexTransport.java:50)
      	at org.apache.activemq.transport.vm.VMTransport.doDispatch(VMTransport.java:138)
      	at org.apache.activemq.transport.vm.VMTransport.dispatch(VMTransport.java:127)
      	- locked <0x647f4650> (a java.util.concurrent.atomic.AtomicBoolean)
      	at org.apache.activemq.transport.vm.VMTransport.oneway(VMTransport.java:104)
      	at org.apache.activemq.transport.MutexTransport.oneway(MutexTransport.java:68)
      	at org.apache.activemq.transport.ResponseCorrelator.oneway(ResponseCorrelator.java:60)
      	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:662)
      
      "ActiveMQ Transport: tcp:///xx:61616@40803" prio=10 tid=0xb3525400 nid=0xbec waiting on condition [0xb3276000]
         java.lang.Thread.State: WAITING (parking)
      	at sun.misc.Unsafe.park(Native Method)
      	- parking to wait for  <0x64657028> (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.oneway(MutexTransport.java:66)
      	at org.apache.activemq.transport.ResponseCorrelator.oneway(ResponseCorrelator.java:60)
      	at org.apache.activemq.network.DemandForwardingBridgeSupport$7.onCompletion(DemandForwardingBridgeSupport.java:630)
      	at org.apache.activemq.transport.FutureResponse.set(FutureResponse.java:65)
      	at org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:109)
      	at org.apache.activemq.transport.MutexTransport.onCommand(MutexTransport.java:50)
      	at org.apache.activemq.transport.vm.VMTransport.doDispatch(VMTransport.java:138)
      	at org.apache.activemq.transport.vm.VMTransport.dispatch(VMTransport.java:127)
      	- locked <0x647f4c80> (a java.util.concurrent.atomic.AtomicBoolean)
      	at org.apache.activemq.transport.vm.VMTransport.oneway(VMTransport.java:104)
      	at org.apache.activemq.transport.MutexTransport.oneway(MutexTransport.java:68)
      	at org.apache.activemq.transport.ResponseCorrelator.oneway(ResponseCorrelator.java:60)
      	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.dispatchSync(TransportConnection.java:857)
      	at org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:186)
      	at org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:116)
      	at org.apache.activemq.transport.MutexTransport.onCommand(MutexTransport.java:50)
      	at org.apache.activemq.transport.vm.VMTransport.doDispatch(VMTransport.java:138)
      	at org.apache.activemq.transport.vm.VMTransport.dispatch(VMTransport.java:127)
      	- locked <0x647e6528> (a java.util.concurrent.atomic.AtomicBoolean)
      	at org.apache.activemq.transport.vm.VMTransport.oneway(VMTransport.java:104)
      	at org.apache.activemq.transport.MutexTransport.oneway(MutexTransport.java:68)
      	at org.apache.activemq.transport.ResponseCorrelator.asyncRequest(ResponseCorrelator.java:81)
      	at org.apache.activemq.network.DemandForwardingBridgeSupport.serviceRemoteCommand(DemandForwardingBridgeSupport.java:622)
      	at org.apache.activemq.network.DemandForwardingBridgeSupport$3.onCommand(DemandForwardingBridgeSupport.java:219)
      	at org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:116)
      	at org.apache.activemq.transport.MutexTransport.onCommand(MutexTransport.java:50)
      	at org.apache.activemq.transport.WireFormatNegotiator.onCommand(WireFormatNegotiator.java:113)
      	at org.apache.activemq.transport.AbstractInactivityMonitor.onCommand(AbstractInactivityMonitor.java:288)
      	at org.apache.activemq.transport.TransportSupport.doConsume(TransportSupport.java:83)
      	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:662)

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          matteo rulli

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