[#MODELER-15] [modeler] IntrospectionUtils memory leak

Commons Modeler

[modeler] IntrospectionUtils memory leak

Created: 08/Sep/05 10:32 PM Updated: 15/Feb/07 09:39 AM

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Component/s:

None

Affects Version/s:

1.1

Fix Version/s:

2.0

Time Tracking:

Not Specified

Environment:

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Operating System: other
Platform: Other

Bugzilla Id:	36559
Resolution Date:	13/Jul/06 10:11 AM

Description

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When I reload my webapp, and I profile, I see Method objects in
IntrospectionUtils grow and grow (to the thousands of instances), and none of
my class Objects (or static references) get collected.

This is in the objectsMethods HashTable.

One suggestion: remove the caching
or
Another suggestion: add a method that clears it (or clears it for a certain
classloader), and make sure this method gets called from Tomcat when it
unloads a webapp (since I dont know how a webapp could call this method if
this class is loaded from the system classloader)

More info:

http://opensource2.atlassian.com/confluence/spring/pages/viewpage.action?
pageId=2669

Thanks!
Chris

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Work Log

Change History

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Repository	Revision	Date	User	Message
ASF	#411629	Mon Jun 05 00:50:01 UTC 2006	billbarker	Attempt fix for ~~MODELER-15~~. Of course, this will have no effect in Tomcat until the Tomcat team decides to upgrade the Modeler version. While, deprecating the DOM source, and using the Digester source would probably be better, it would also place a hard dependancy on [digester], which while probably ok for TC 4.x and TC 3.x, would almost certainly be rejected by the Tomcat team for TC 5.x. Also clean up a couple of Java 5 warnings.
				Files Changed
				MODIFY /jakarta/commons/proper/modeler/trunk/src/java/org/apache/commons/modeler/util/IntrospectionUtils.java

Repository	Revision	Date	User	Message
ASF	#484910	Sat Dec 09 04:12:31 UTC 2006	billbarker	Fix modeler memory leak on reload. Fix for: ~~MODELER-15~~ Please don't try to port this to TC 6.x, because Remy has already put a better patch in place there.
				Files Changed
				MODIFY /tomcat/container/tc5.5.x/catalina/src/share/org/apache/catalina/loader/WebappClassLoader.java