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https://issues.apache.org/jira/browse/TUSCANY-2092?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Simon Laws closed TUSCANY-2092.
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Resolution: Fixed
Thanks for the patch Ram. Committed at 657093
> ConcurrentModificationException in ExtensibleContributionListener
> -----------------------------------------------------------------
>
> Key: TUSCANY-2092
> URL: https://issues.apache.org/jira/browse/TUSCANY-2092
> Project: Tuscany
> Issue Type: Bug
> Reporter: Greg Dritschler
> Assignee: Simon Laws
> Fix For: Java-SCA-Next
>
> Attachments: JIRA-2092.patch, TUSCANY-2092.patch
>
>
> java.util.ConcurrentModificationException
> at java.util.AbstractList$SimpleListIterator.next(Unknown Source)
> at
> org.apache.tuscany.sca.contribution.service.ExtensibleContributionListener.contributionAdded(ExtensibleContributionListener.java:40)
> at
> org.apache.tuscany.sca.contribution.service.impl.ContributionServiceImpl.addContribution(ContributionServiceImpl.java:389)
> at
> org.apache.tuscany.sca.contribution.service.impl.ContributionServiceImpl.contribute(ContributionServiceImpl.java:202)
> The problem occurs if two threads try to add a contribution simultaneously.
> DefaultContributionListenerExtensionPoint does not synchronize the list of
> listeners. In particular loadListeners does not prevent multiple threads
> from trying to load the list of listeners. One thread completes first while
> the other is still loading. This leads to the exception shown above when a
> thread tries to iterate the listener list.
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