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https://issues.apache.org/jira/browse/JS2-646?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Sean Taylor resolved JS2-646.
-----------------------------------
Resolution: Fixed
Fix Version/s: 2.1-dev
this patch has been applied for a while now without further report of issue
> ActionValveImpl can throw NullPointerException under clustered environment.
> ---------------------------------------------------------------------------
>
> Key: JS2-646
> URL: https://issues.apache.org/jira/browse/JS2-646
> Project: Jetspeed 2
> Issue Type: Bug
> Components: Components Core
> Affects Versions: 2.1
> Environment: Servlet Container: Tmax JEUS 5.0 (Fix #17).
> The #17 fixes were reported to Tmax by our portal dev team and included the
> followings:
> - JAAS bug fixes.
> - Fixes for Spring portlet MVC framework Loading problems.
> - Fixes for Webtob's 'URI too long' problem.
> I'm going to post installation guide document for that platform later. (I
> have to translate that.)
> Reporter: Woonsan Ko
> Assigned To: David Sean Taylor
> Fix For: 2.1-dev
>
> Attachments: JS2-646-diff.txt
>
>
> When servlet containers are clustered, ActionValveImpl can throw
> NullPointerException as follows:
> ActionValveImpl.java:initWindow.window.getPortletEntity()[null]
> java.lang.NullPointerException
> at
> org.apache.jetspeed.pipeline.valve.impl.ActionValveImpl.initWindow(ActionValveImpl.java:187)
> at
> org.apache.jetspeed.pipeline.valve.impl.ActionValveImpl.invoke(ActionValveImpl.java:88)
> at
> org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:166)
> at
> org.apache.jetspeed.container.ContainerValve.invoke(ContainerValve.java:77)
> ...
> The reason why this symptom occurs is that the cache for portlet windows is
> shared among containers, but the portlet entity for a portlet window cannot
> be synchronized among containers.
> So, a portlet window can be retrieved from the cache, but its portlet entity
> can be null.
> Therefore, I added a path to check if portlet entity is null, and to refresh
> the portlet window with validated portlet entity. See my patch.
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