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https://issues.apache.org/activemq/browse/CAMEL-2740?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=60895#action_60895
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Claus Ibsen commented on CAMEL-2740:
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See this FAQ about the correct way of using templates
http://camel.apache.org/why-does-camel-use-too-many-threads-with-producertemplate.html

And also try Camel 2.5 because the request-reply logic over JMS have been 
refactored a bit to cater for async routing engine.

> Using static queue as a reply queue in InOut pattern causes memory leak
> -----------------------------------------------------------------------
>
>                 Key: CAMEL-2740
>                 URL: https://issues.apache.org/activemq/browse/CAMEL-2740
>             Project: Apache Camel
>          Issue Type: Bug
>          Components: camel-jms
>    Affects Versions: 2.2.0
>         Environment: Windows 2003 server
>            Reporter: Qingyi Gu
>
> I am running JBoss, ActiveMQ and Camel for my application.   In the InOut 
> pattern,  I am using a predefined static queue as a reply queue.   After 
> running for a while,  the memory usage of JBoss keeps growing and growing 
> until it hits outOfMemory error and app server is totally hung.   I monitor 
> the thread in jconsole,  I can see the jms connection/session keeps growing 
> and growing.   
> But once I switch to use temp queue for InOut pattern,  this problem goes 
> away.

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