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https://issues.apache.org/jira/browse/TAP5-2152?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13725177#comment-13725177
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Christian Köberl commented on TAP5-2152:
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The problem cannot be reproduced with JIT disabled - we're just investigating
this with IBM.
> NPE in Form on Websphere 8 after applying load
> ----------------------------------------------
>
> Key: TAP5-2152
> URL: https://issues.apache.org/jira/browse/TAP5-2152
> Project: Tapestry 5
> Issue Type: Bug
> Components: tapestry-core
> Affects Versions: 5.2.6
> Reporter: Christian Köberl
> Labels: websphere
>
> A NullPointerException occurs Form.java:406 (Tapestry 5.2.6) when applying
> load - in any application deployed to Websphere 8.
> Here's the corresponding line from Form.java:406:
> resources.triggerEvent(EventConstants.PREPARE_FOR_RENDER, context, null);
> The NPE first is raised after some parallel users are working with the
> application - before that everything works fine. After the first occurrence,
> the NPE is raised on *any* Form render on *any* page for *all* users. We have
> to restart the application to get it working again. We can reproduce the
> error with some load but the first NPE happens on different pages - so that's
> no clue.
> The behavior can be reproduced with a quite simple application with some
> pages with forms: https://github.com/porscheinformatik/tapestry-was8
> The behavior *cannot* be reproduced with JIT turned off.
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