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https://issues.apache.org/jira/browse/TAPESTRY-2723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12662428#action_12662428
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Andreas Andreou commented on TAPESTRY-2723:
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As reported in the mailing list, this occures under:
java version "1.5.0_10"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_10-b03)
Java HotSpot(TM) Client VM (build 1.5.0_10-b03, mixed mode, sharing)
and JDK 1.5.0_17
Also, another note:
"We've tracked the problem further and it appears to be a thread safety problem
in the PageLoader class.
We have pop-ups in our app that are seperate Tapestry pages and we think that
they may be clobbering each other when getting loaded."
> Compenents that should be found are not found during page loading
> -----------------------------------------------------------------
>
> Key: TAPESTRY-2723
> URL: https://issues.apache.org/jira/browse/TAPESTRY-2723
> Project: Tapestry
> Issue Type: Bug
> Components: Framework
> Affects Versions: 4.1.6
> Environment: Windows XP Service pack 3 - 1.86 GHz, 3 GB of ram -
> JBoss - Tapestry 4.1.6
> Reporter: michael wasserman
> Attachments: StackTrace.txt
>
>
> When AbstractComponent.getComponents(String) is called the HashMap
> "_components" is unexpectedly null, causing an ApplicationRuntimeException
> which indicates that the given component (id passed as parameter to
> getComponents(String)), does not exist. We have confirmed that in every
> instance the given component does exist in the given page.
> This problem happens randomly on a variety of pages.
> This could be an indication of a thread safety problem in the PageLoader
> class. We can duplicate the problem, (unreliably), via our selenium test
> suite.
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