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https://issues.apache.org/jira/browse/MYFACES-3795?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13795780#comment-13795780
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Leonardo Uribe commented on MYFACES-3795:
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It seems the bug was introduced in MYFACES-2777. It is clear that map should be
in FacesContext attribute map. I'll fix that.
> ErrorPageWriter cause memory leak in visitedFacetCount map
> ----------------------------------------------------------
>
> Key: MYFACES-3795
> URL: https://issues.apache.org/jira/browse/MYFACES-3795
> Project: MyFaces Core
> Issue Type: Bug
> Affects Versions: 2.1.11
> Environment: Linux
> Reporter: Tomasz Szlek
>
> We have noticed that there is a memory leak in class
> org.apache.myfaces.renderkit.ErrorPageWriter, map: visitedFacetCount.
> This memory leak occurs when <ui:debug/> is used.
> Description of problem:
> Ui debug component tree page use visitedFacetCount as a temporary source of
> UI components in order to generate html page based on such components.
> This generator use visitor : ExtendedComponentTreeVisitCallback class.
> Inside method visit we have following lines :
> 972: _incrementVisitedFacetCount(parent); //put compnent into
> visitedFacetCount map
> ...
> 1131: _removeVisitedFacetCount(parent); // remove visited component from
> visitedFacetCount map.
> Unfortunatelly visited component is removed from visitedFacetCount map only
> if there are no children for component.
> Thus it looks like components are never removed properly from
> visitedFacetCount.
> Possible solution:
> Parrent componet should be removed from visitedFacetCount when it back from
> recursion.
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