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https://issues.apache.org/jira/browse/AMQ-3451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13447171#comment-13447171
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Claus Ibsen commented on AMQ-3451:
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The org.apache.activemq.thread.DefaultThreadPools seems to be used in 2 areas
- by the broker a bit
- transports
The code for the broker, can be refactored to use a broker specific executor,
so when the broker shutdown, those threads will be shutdown as well. That
should be doable
The transports can be used by JMS clients as well, so I wonder as Gary says,
can we use a dedicated thread pool (executor service) *per* transport?
If that would be doable, then we have start|stop callbacks on the transports,
where we can ensure the thread pool is setup / shutdown properly.
> 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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