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From "Johannes (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMQ-3514) MessageListenerServlet does not clear the timer on destroy
Date Wed, 28 Sep 2011 16:06:45 GMT
MessageListenerServlet does not clear the timer on destroy
----------------------------------------------------------

                 Key: AMQ-3514
                 URL: https://issues.apache.org/jira/browse/AMQ-3514
             Project: ActiveMQ
          Issue Type: Bug
    Affects Versions: 5.5.0
            Reporter: Johannes
            Priority: Trivial


Hi, 

we are debugging a shutdown problem using the activemq-web-console deployed into jetty. 

It seems as if everything is terminated as expected, apart from a TimerThread which logs to
the console about every minute. 

05 Jul 2011 09:03:19,246 DEBUG [Timer-1] org.apache.activemq.web.MessageListenerServlet.debug()
-- Cleaning up expired web clients. 

Tracing down the problem indicated one possible cause. 
The web-console package declares the AjaxServlet to send messages via the web to the broker,
it extends MessageListenerServlet. 

The init() mehtod of the MessageListenerServlet schedules task 

        clientCleanupTimer.schedule( new ClientCleaner(), 5000, 60000 ); 

but the timer (clientCleanupTimer) is never canceled and according to the javadoc of Timer
this can prevent the JVM from shutting down cleanly. 

Patch attached

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