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From "Sergey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMQ-3451) Tomcat 6.0.32 complains that ActiveMQ 5.5 doesn't shutdown a thread
Date Fri, 03 Aug 2012 14:36:03 GMT

    [ https://issues.apache.org/jira/browse/AMQ-3451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13428126#comment-13428126
] 

Sergey commented on AMQ-3451:
-----------------------------

I you didn't put ActiveMQ lib in tomcat shared lib, then I don't understand why you have a
memory leak, because when I package ActiveMQ libs to WEB-INF/lib, then I don't have any memory
leaks except AMQ-3959. 
You need to deploy your web application, then stop it in Tomcat Manager, then use Eclipse
Memory Analysis tool, take a heap dump, open histogram, group by clasloader, then find paths
to GC root for WebAppClassLoader. When done, you will know for sure the cause of  the memory
leak.
                
> Tomcat 6.0.32 complains that ActiveMQ 5.5 doesn't shutdown a thread
> -------------------------------------------------------------------
>
>                 Key: AMQ-3451
>                 URL: https://issues.apache.org/jira/browse/AMQ-3451
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: JMS client
>    Affects Versions: 5.5.0
>         Environment: jdk 1.6.0_23 for Linux 64 bit, Ubuntu 11.04
> Tomcat 6.0.32
> Spring 3.0.5
>            Reporter: John Miller
>              Labels: leak, resource
>         Attachments: inherited_access_cotrol_context_leak.png, patch.txt, transport_thread_leak.png
>
>
> Every time when restarting web application in Tomcat Manager I get messages:
> SEVERE: The web application [/sms] appears to have started a thread named [ActiveMQ Task-3]
but has failed to stop it. This is very likely to create a memory leak.
> With every restart PermGen space is increased and finally i got OutOfMemory error for
PermGen space.
> I use Spring DefaultMessageListenerContainer, and it's shutdown method closes properly
receivers threads. What is "ActiveMQ Task-3" thread and how to close it properly ?

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