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Posted to dev@activemq.apache.org by "Gary Tully (JIRA)" <ji...@apache.org> on 2012/11/08 15:39:13 UTC
[jira] [Commented] (AMQ-1853) Optional non-blocking redelivery
[ https://issues.apache.org/jira/browse/AMQ-1853?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13493225#comment-13493225 ]
Gary Tully commented on AMQ-1853:
---------------------------------
the url query, b/c it is a connection factory attribute is:{code}jms.nonBlockingRedelivery=true{code}
> Optional non-blocking redelivery
> --------------------------------
>
> Key: AMQ-1853
> URL: https://issues.apache.org/jira/browse/AMQ-1853
> Project: ActiveMQ
> Issue Type: Wish
> Components: Broker
> Affects Versions: 5.1.0
> Reporter: Demian Mrakovich
> Assignee: Timothy Bish
> Fix For: 5.6.0
>
> Attachments: AMQ1853Test.java
>
>
> When a message is redelivered the consumer blocks for the amount of time specified by the redelivery delay. For a high load scenario where message order is irrelevant this is just reducing performance and will result in a complete halt if the delay is long and several bad messages are consumed in a short time.
> I think what I basically wish for is how it worked in versions 3.x, prior to fix for AMQ-268. So I would very much like to have configurable option to NOT block consumers when redelivering messages.
> If no-one feels up to it, I'd still appreciate some hints and I could try to fix it myself. Looking at ActiveMQMessageConsumer.rollback(), I was thinking something in the lines of just scheduling a task to put the message back on queue after a delay - if configured to, instead of stopping delivery and a schedule a task to resume delivery again. But I do not possess an understanding of AMQ thorough enough to predict potential side effects of this, so any analysis would be helpful.
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