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https://issues.jboss.org/browse/RF-13071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12976139#comment-12976139
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Lutz Ulrich commented on RF-13071:
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I guess it's a warning, too.
Probably Tomcat logs such warnings whenever a wep application starts threads
but won't stop them.
For example
{{org.richfaces.application.push.impl.jms.JMSTopicsContextImpl.start()}} starts
'push-session-manager-thread'-s.
These threads run a {{while(true)}} loop, and I guess they never terminate.
You should terminate these threads when the web application is stopped.
> Undeploying Showcase from Tomcat6/7 can cause memory leak
> ---------------------------------------------------------
>
> Key: RF-13071
> URL: https://issues.jboss.org/browse/RF-13071
> Project: RichFaces
> Issue Type: Bug
> Security Level: Public(Everyone can see)
> Components: component-push/poll, showcase
> Affects Versions: 4.1.0.Final, 5.0.0.Alpha1
> Reporter: Juraj Húska
> Priority: Minor
> Labels: memory_leak, performance
> Fix For: 5-Tracking
>
>
> When undeploying showcase from Tomcat 6/7 then following log is present on
> the server console:
> {code}
> SEVERE: The web application [/richfaces-showcase-tomcat6] appears to have
> started a thread named [Thread-0
> (group:HornetQ-client-factory-threads-1831192424-1080990297)] but has failed
> to stop it. This is very likely to create a memory leak.
> {code}
> There is lot of such logs, just the _Thread-counter_ is changing.
> * 11 such logs just with showcase deploying and then right after undeploying
> * bit more when after deploying playing a little bit with {{r:push}}
> IMHO it is not just warning. I am experiencing {{Out of Memory}} issues when
> testing on Tomcat. I need to use quite big {{Perm Gen}} and {{Heap size}}
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