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Posted to dev@activemq.apache.org by "Dejan Bosanac (JIRA)" <ji...@apache.org> on 2010/12/02 14:11:15 UTC
[jira] Updated: (AMQ-2373) Expired Messages appear through policy
entry on the DLQ and are also processed from the main Queue
[ https://issues.apache.org/jira/browse/AMQ-2373?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Dejan Bosanac updated AMQ-2373:
-------------------------------
Fix Version/s: (was: 5.4.2)
5.5.0
> Expired Messages appear through policy entry on the DLQ and are also processed from the main Queue
> --------------------------------------------------------------------------------------------------
>
> Key: AMQ-2373
> URL: https://issues.apache.org/jira/browse/AMQ-2373
> Project: ActiveMQ
> Issue Type: Bug
> Affects Versions: 5.2.0
> Reporter: Andrew Maharaj
> Fix For: 5.5.0
>
>
> Hi,
> We have a policy entry like this:
> <destinationPolicy>
> <policyMap>
> <policyEntries>
> <policyEntry queue=">" memoryLimit="10mb">
> <deadLetterStrategy>
> <individualDeadLetterStrategy queuePrefix="DLQ." useQueueForQueueMessages="true" />
> </deadLetterStrategy>
> </policyEntry>
> <policyEntry topic=">" memoryLimit="10mb">
> </policyEntry>
> </policyEntries>
> </policyMap>
> </destinationPolicy>
> Messages sent with an expiry time of 10 seconds appear on the Dead Letter Queue.
> However, if a Message Driven Bean ultimately picks up the message from the main queue in a transaction and the transaction is slow, the message can expire while the transaction is in progress.
> This leads to a situation where the message is processed twice, implying that the queue processing is not atomic.
> - The main MDB completes processing,
> - The expired message is moved to the DLQ
> - The MDB listening to the Dead Letter Queue also processes a response.
> Utlimately, responses for the expired message and for the in flight message are both generated. Neither operation reports any exceptions.
> The MDB's are simple, vanilla MDB's using Apache Geronimo 2.1.4 and referring to a separate ActiveMQ 5.2 installation (not the 4.1 shipped with Geronimo).
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