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Posted to dev@uima.apache.org by "Marshall Schor (JIRA)" <ui...@incubator.apache.org> on 2008/08/19 23:07:44 UTC
[jira] Reopened: (UIMA-1130) Deployment Descriptor should allow
setting the number of concurrent listeners for a reply queue
[ https://issues.apache.org/jira/browse/UIMA-1130?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Marshall Schor reopened UIMA-1130:
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Assignee: Marshall Schor (was: Tong Fin)
This change requires a change to the deployment descriptor. This change adds to the <replyQueue ...> the attribute concurrentConsumers="nnn", and deprecates the location=[local | remote] for remote delegates. The change being done is to always use remote reply queues for remote delegates (see discussion above).
Change dd2spring.xsl and also change the documentation for uima-as to correspond to this change.
> Deployment Descriptor should allow setting the number of concurrent listeners for a reply queue
> -----------------------------------------------------------------------------------------------
>
> Key: UIMA-1130
> URL: https://issues.apache.org/jira/browse/UIMA-1130
> Project: UIMA
> Issue Type: Improvement
> Components: Async Scaleout
> Affects Versions: 2.2.2
> Reporter: Adam Lally
> Assignee: Marshall Schor
> Attachments: DDE_PATCH_JIRA_1130_A.txt, DDE_PATCH_JIRA_1130_B.txt
>
>
> The Spring XML allows setting a concurrentConsumers property for a reply queue (either an aggregate's collocated reply queue or a remote reply queue):
> <property name="concurrentConsumers" value="1"/>
> The deployment descriptor should allow setting this property. In some deployments where remote delegates are scaled out many times, the bottleneck can become the aggregate deserializing CASes from the reply queue. If the aggregate is running on a multicore machine it helps to increase the number of threads that can process the reply queue.
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