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Posted to dev@uima.apache.org by "Burn Lewis (JIRA)" <ui...@incubator.apache.org> on 2009/07/02 00:16:47 UTC
[jira] Commented: (UIMA-1109) Need ability to quiesce an instance
of a service
[ https://issues.apache.org/jira/browse/UIMA-1109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12726245#action_12726245 ]
Burn Lewis commented on UIMA-1109:
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Tested using the command-line "q" and also with completeProcessingAndStop via JMX (had to use a Sun JVM for both the service and jconsole in order to connect) ... both caused a ServiceShutdownException to be sent to the client which is unexpected.
Also when quiesced via JMX the service did not exit ... perhaps is still waiting for a 'q' or 's'.
When stopped with "s" or the JMX stopNow() the service stopped but did not exit ... required control-C. Client also got a ServiceShutdownException but maybe that's to be expected with a hard shutdown.
> Need ability to quiesce an instance of a service
> ------------------------------------------------
>
> Key: UIMA-1109
> URL: https://issues.apache.org/jira/browse/UIMA-1109
> Project: UIMA
> Issue Type: Improvement
> Components: Async Scaleout
> Reporter: Burn Lewis
> Assignee: Jerry Cwiklik
>
> We can deploy extra instances of a service seamlessly but also need a mechanism to undeploy without losing any work, i.e. ask an instance to stop processing messages and shutdown when it finishes its current work.
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