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https://issues.apache.org/jira/browse/MYFACES-2942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12922527#action_12922527
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Martin Kočí commented on MYFACES-2942:
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With EL 2.2 implementation from Glassfish, tomcat 6.0.X and myfaces
helloworld20 archetype, instance of
https://uel.dev.java.net/svn/uel/trunk/api/src/main/java/javax/el/BeanELResolver.java
holds reference to HelloWorldController.class in:
private static final ConcurrentHashMap<Class, BeanProperties> properties =
new ConcurrentHashMap<Class, BeanProperties>(CACHE_SIZE);
and keeps the classloader alive. This is cleary problem in this particular EL
implementation. After I commented out that caching, classloader is GCed.
Tomcat uses better solution:
http://svn.apache.org/viewvc/tomcat/trunk/java/javax/el/BeanELResolver.java?revision=1022623&view=markup
so this problem should not be general.
> Memory Leak in MyFaces 2.0.1 probably as well in 2.0.2
> ------------------------------------------------------
>
> Key: MYFACES-2942
> URL: https://issues.apache.org/jira/browse/MYFACES-2942
> Project: MyFaces Core
> Issue Type: Bug
> Affects Versions: 2.0.1, 2.0.2
> Environment: JBOSS AS
> Reporter: Werner Punz
> Assignee: Jakob Korherr
> Priority: Critical
> Attachments: MYFACES-2942-RuntimeConfig.patch
>
>
> Stan Silvert from JBoss reports:
> I'm pretty sure 2.0.1 has a memory leak on undeploy. Mojarra had an undeploy
> leak and it took a long time to track it down. The same test I was using on
> Mojarra also failed on MyFaces but I haven't had time to track down the leak
> in MyFaces.
> Maybe this is fixed in 2.0.2? If not maybe someone can go ahead and take a
> look? The mem leak keeps MyFaces from passing TCK on JBoss AS. To test, all
> you need to do is create a small exploaded JSF app. Then have a script that
> touches web.xml every 10 seconds. That will cause the app to redeploy. You
> will get a PermGen error in about an hour.
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