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From gupabhi <abhi.gu...@morganstanley.com>
Subject NullPointerException on ActiveMQConnection.close
Date Tue, 08 Jul 2008 18:07:35 GMT

Hi,
   I'm using ActiveMQ on JMS to run some junit tests. I create a new
instance of the broker etc for every unit test.  Sometimes I get the
following exception while sending a message using the JMSTemplate. When the
close() is called on the connection it throws this exception. Its not
consistent, so there might be some kind of race condition here.  Has anyone
faced this before?  Any help on this or a workaround will be  highlly
appreciated.

Thanks,
Abhi



java.lang.NullPointerException
	at
org.apache.activemq.broker.TransportConnection.doStop(TransportConnection.java:910)
	at
org.apache.activemq.broker.TransportConnection.stop(TransportConnection.java:876)
	at org.apache.activemq.util.ServiceStopper.stop(ServiceStopper.java:41)
	at
org.apache.activemq.broker.TransportConnector.stop(TransportConnector.java:258)
	at org.apache.activemq.util.ServiceSupport.dispose(ServiceSupport.java:40)
	at
org.apache.activemq.transport.vm.VMTransportFactory.stopped(VMTransportFactory.java:180)
	at
org.apache.activemq.transport.vm.VMTransportServer.stop(VMTransportServer.java:120)
	at org.apache.activemq.util.ServiceStopper.stop(ServiceStopper.java:41)
	at
org.apache.activemq.broker.TransportConnector.stop(TransportConnector.java:250)
	at org.apache.activemq.util.ServiceSupport.dispose(ServiceSupport.java:40)
	at
org.apache.activemq.transport.vm.VMTransportFactory.stopped(VMTransportFactory.java:180)
	at
org.apache.activemq.transport.vm.VMTransportServer.stop(VMTransportServer.java:120)
	at
org.apache.activemq.transport.vm.VMTransportServer$1.stop(VMTransportServer.java:83)
	at
org.apache.activemq.transport.TransportFilter.stop(TransportFilter.java:63)
	at
org.apache.activemq.transport.TransportFilter.stop(TransportFilter.java:63)
	at org.apache.activemq.util.ServiceSupport.dispose(ServiceSupport.java:40)
	at
org.apache.activemq.ActiveMQConnection.close(ActiveMQConnection.java:587)
	at
org.springframework.jms.connection.ConnectionFactoryUtils.releaseConnection(ConnectionFactoryUtils.java:80)
	at org.springframework.jms.core.JmsTemplate.execute(JmsTemplate.java:454)
	at org.springframework.jms.core.JmsTemplate.send(JmsTemplate.java:523)
	at
org.springframework.jms.core.JmsTemplate.convertAndSend(JmsTemplate.java:602)

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