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From "Johannes (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMQ-3514) MessageListenerServlet does not clear the timer on destroy
Date Thu, 29 Sep 2011 11:40:45 GMT

    [ https://issues.apache.org/jira/browse/AMQ-3514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13117226#comment-13117226
] 

Johannes commented on AMQ-3514:
-------------------------------

Thanks for attending to this so quickly
                
> 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
>             Fix For: 5.6.0
>
>         Attachments: AMQ-3514_destroy_timer_on_shutdown.patch
>
>
> 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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