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https://issues.apache.org/activemq/browse/AMQ-1777?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kai Hudalla updated AMQ-1777:
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Attachment: amq-1777.patch
Patch that creates a shallow copy of the <i>ConnectionEventListener</i>
collection before iterating over it.
> Access to ConnectionEventListeners in RA's ActiveMQManagedConnection is not
> synchronized
> ----------------------------------------------------------------------------------------
>
> Key: AMQ-1777
> URL: https://issues.apache.org/activemq/browse/AMQ-1777
> Project: ActiveMQ
> Issue Type: Bug
> Components: JCA Container
> Affects Versions: 5.0.0, 5.1.0
> Reporter: Kai Hudalla
> Priority: Minor
> Attachments: amq-1777.patch
>
>
> When the RA's connection to the broker fails and the
> <i>ActiveMQManagedConnection.onException()</i> method is called, all the
> registered <i>ConnectionEventListener</i>s are notified.
> At least in Glassfish, the registered listener then calls the
> <i>ActiveMQManagedConnection.removeConnectionEventListener()</i> to
> unregister itself. This causes a
> <i>java.util.ConcurrentModificationException</i> to be thrown since the
> <i>ConnectionEventListener</i> collection is modified while the
> <i>onException()</i> iterates over it.
> Kai
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