[jira] [Created] (TAP5-2152) NPE in Form on Websphere 8 after applying load

["Christian Köberl (JIRA)" <ji...@apache.org>]

Christian Köberl created TAP5-2152:
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             Summary: 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


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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