ActiveMQ
  1. ActiveMQ
  2. AMQ-1930

NPE during shutdown of embedded activemq

    Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Major Major
    • Resolution: Cannot Reproduce
    • Affects Version/s: 5.2.0
    • Fix Version/s: NEEDS_REVIEW
    • Component/s: Transport
    • Labels:
      None
    • Environment:

      revision 675393 of trunk, ActiveMQ 5.2.0

      Description

      I received the following exception from the VMTransport thread when shutting down the broker:

      Async error occurred: java.lang.NullPointerException
      java.lang.NullPointerException
      	at org.apache.activemq.broker.TransportConnection.processRemoveConsumer(TransportConnection.java:542)
      	at org.apache.activemq.command.RemoveInfo.visit(RemoveInfo.java:64)
      	at org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:292)
      	at org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:180)
      	at org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:104)
      	at org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:68)
      	at org.apache.activemq.transport.vm.VMTransport.iterate(VMTransport.java:205)
      	at org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:122)
      	at org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:43)
      	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
      	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
      	at java.lang.Thread.run(Thread.java:619)
      

      The failure occurred at the following lines of code:

              TransportConnectionState cs = lookupConnectionState(connectionId);
              SessionState ss = cs.getSessionState(sessionId);
      

      It appears that there is a race during shutdown where the connection state is discarded before the last consumer is removed.

        Activity

        No work has yet been logged on this issue.

          People

          • Assignee:
            Unassigned
            Reporter:
            Scott Stanton
          • Votes:
            1 Vote for this issue
            Watchers:
            2 Start watching this issue

            Dates

            • Created:
              Updated:
              Resolved:

              Development