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https://issues.apache.org/jira/browse/FELIX-827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12649660#action_12649660
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Karl Pauls commented on FELIX-827:
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Your last guess is correct, it wouldn't handle the "multiple classloaders that
load URLHandlers" case correctly. That is the reason why I stopped at the
current implementation (which does do what you suggest - at least sort of). I'm
planning to revisit this and should have a fix before long.
However, now that you mention it, are you sure the memory leak is due to the
webapp not getting fully unloaded? The point is that we do leak framework
instances inside the implementation and my guess would be that this is the
reason why you see the run out of permgen space. That would be much easier to
fix right now. In case I get this done, could you test it and see whether it
fixes your issue? Then I would have more time to get the unloading and chaining
case working correctly...
> URLHandlers does not restore the previous URLStreamHandlerFactory after
> stopping Felix
> --------------------------------------------------------------------------------------
>
> Key: FELIX-827
> URL: https://issues.apache.org/jira/browse/FELIX-827
> Project: Felix
> Issue Type: Improvement
> Components: Framework
> Affects Versions: felix-1.2.1
, felix-1.4.0
> Reporter: Tim Moore
> Assignee: Karl Pauls
> Fix For: felix-1.4.1
>
> Attachments: felix-827.patch, test-felix-handler-1.0-SNAPSHOT.jar,
> test-felix-handler.zip
>
>
> I'm running Felix embedded inside a webapp, running in Tomcat.
> Tomcat installs its own URLStreamHandlerFactory. Felix swaps it out correctly
> when I start it, and seems to delegate properly. When the webapp is unloaded,
> however, and it stops Felix, it does not restore the previous implementation,
> but rather leaves the existing URLHandlers instance installed. Then, if I try
> to redeploy the webapp without restarting the JVM, I get errors, because
> Tomcat automatically sets the URLHandlers class's static members to null when
> it unloads the webapp. (see
> https://issues.apache.org/bugzilla/show_bug.cgi?id=41939)
> I've tested this on 1.2.1 and 1.4.0, and both versions have this problem.
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