[richfaces-issues] [JBoss JIRA] Commented: (RF-7911) OutOfMemory when redeploying - ClientSelection not unregistered from PropertyEditorManager

[Hans Cappelle (JIRA)]

    [ https://jira.jboss.org/jira/browse/RF-7911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12492077#action_12492077 ] 

Hans Cappelle commented on RF-7911:
-----------------------------------

See last remark at this ticket: https://issues.apache.org/jira/browse/XBEAN-95

java.beans.PropertyEditorManager keeps a strong reference to the registered classes. The xbean PropertyEditor classes are loaded by the context class loader, (which is the webapp class loader if running in Tomcat etc.). The class java.beans.PropertyEditorManager is loaded by the bootstrap class loader. This means that there is a strong reference from the bootstrap class loader to the webapp class loader, which means that the webapp class loader cannot be unloaded, which means that the webapp is not garbage collected when it is undeployed.

> OutOfMemory when redeploying - ClientSelection not unregistered from PropertyEditorManager
> ------------------------------------------------------------------------------------------
>
>                 Key: RF-7911
>                 URL: https://jira.jboss.org/jira/browse/RF-7911
>             Project: RichFaces
>          Issue Type: Bug
>          Components: component-ScrollableDataTable
>    Affects Versions: 3.3.1
>         Environment: richfaces.3.3.1.GA + Tomcat 6
>            Reporter: Geert Coelmont
>            Assignee: Konstantin Mishin
>             Fix For: Future
>
>         Attachments: screen_shot1.jpg, screen_shot1.jpg, simple-jsf.zip
>
>
> When redeploying, webapp classloader isn't garbage collected, causing a "java.lang.OutOfMemoryError: PermGen space" after a few times.
> I used a profiler ("yourkit") to see where the issue was and found these 3 classes:
> - org.richfaces.model.selection.ClientSelection
> - com.sun.faces.application.ConverterPropertyEditorFactory$DisposableClassLoader
> - com.sun.faces.application.ConverterPropertyEditorBase
> See attached screen shot for more details.
> I don't know where the 2 com.sun.faces classes come from either, but at least org.richfaces.model.selection.ClientSelection shouldn't be there.
> I saw issue RF-1284 which appears to be very similar, only now this happens in a newer version. 

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