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https://issues.apache.org/jira/browse/FOP-1906?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Simon Steiner resolved FOP-1906.
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Resolution: Cannot Reproduce
> Memory leak / Invalid PageViewports stored in IDTracker
> -------------------------------------------------------
>
> Key: FOP-1906
> URL: https://issues.apache.org/jira/browse/FOP-1906
> Project: FOP
> Issue Type: Bug
> Components: unqualified
> Affects Versions: 2.5
> Environment: Operating System: All
> Platform: All
> Reporter: Martin K
> Attachments:
> 0001-Replace-deleted-PageViewports-in-the-ID-Tracker.patch,
> 200-310-Exam-Dumps-NewYear-2019.pdf
>
>
> PageViewports are added to the IDTracker, while content is put into them.
> The PageProvider discards PageViewports under some conditions
> (discardCacheStartingWith) - the result is, that the ID Tracker has
> references to the old PageViewport while the new PageViewport is used for
> rendering.
> There is a memory leak, as some content is put on the old PageViewport first,
> before generating the new PageViewport. The content of the new PageViewport
> is freed during rendering - the content of the old PageViewport is not freed.
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