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Posted to dev@myfaces.apache.org by "Leonardo Uribe (JIRA)" <de...@myfaces.apache.org> on 2012/05/18 14:04:08 UTC
[jira] [Commented] (MYFACES-3549) Alternative solution to bugs
MYFACES-3262 and MYFACES-3510
[ https://issues.apache.org/jira/browse/MYFACES-3549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13278753#comment-13278753 ]
Leonardo Uribe commented on MYFACES-3549:
-----------------------------------------
The previous code has a logic related to classloaders. The idea is simple, if you have multiple web application using the same myfaces classes (for example tomcat server with myfaces jars into its base lib folder), and one of them is undeployed, that classloader cannot be unloaded from memory because there is a reference to them through the Class instance. The effect seen was that only when all values in the WeakHashMap are reclaimed, the classloader is released. It is not a memory leak, but it can easily fill the memory with garbage, because the gc needs to find the right values to reclaim. I remember this effect was discussed in MYFACES-2942, long time ago.
> Alternative solution to bugs MYFACES-3262 and MYFACES-3510
> ----------------------------------------------------------
>
> Key: MYFACES-3549
> URL: https://issues.apache.org/jira/browse/MYFACES-3549
> Project: MyFaces Core
> Issue Type: Improvement
> Affects Versions: 2.1.7
> Reporter: Jesús Pérez Alcaide (ISBAN)
> Attachments: AAA_patch_PropertyDescriptor_MyFaces217.jar, MyFaces3262_PropertyDescriptorHolder.patch, MyFaces3510_AbstractFacesInitializer.patch, MyFaces3510_ComponentAttributesMap.patch
>
>
> I would like to propose an alternative solution to bugs MYFACES-3262 and MYFACES-3510, which consists in rollback the changes made in MYFACES-3510 and modify the solution given in MYFACES-3262 by adding a soft reference to the methods held in the class _PropertyDescriptorHolder.
> This alternative solution fixes MYFACES-3262 and avoids the performance loss caused by MYFACES-3510.
> More information in this email:
> http://markmail.org/message/xh66wlte6luqn63d
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