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https://issues.apache.org/jira/browse/WICKET-6845?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17217893#comment-17217893
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Sven Meier commented on WICKET-6845:
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[~mgrigorov] To save you a little time, I already found the reason:
When the page is serialized, the session is serialized too, including all pages
contained in InSessionPageStore's data. This loops into serializing the page
again :(.
In Wicket 8.x non-serialized pages in the PagesCache (InSessionPageStore's 8.x
equivalent) are just dropped on serialization.
> stackoverflow while serializing a page containing a reference to session
> ------------------------------------------------------------------------
>
> Key: WICKET-6845
> URL: https://issues.apache.org/jira/browse/WICKET-6845
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 9.0.0, 9.1.0
> Reporter: Ernesto Reinaldo Barreiro
> Assignee: Martin Tzvetanov Grigorov
> Priority: Major
> Attachments: session-serialization.tar.gz
>
>
> Something has changed in the way pages are serialized in wicket 9.x thus that
> if a page has a reference to session serialization enters in a loop causing
> an stack overflow. See attached project. While there is no reasons to keep a
> reference to session, and I have fixed that in our legacy code causing this
> problem, it would be nice to avoid server crashing because of this (and log
> a huge warning for users to note).
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