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Posted to dev@oozie.apache.org by "Craig Peters (Created) (JIRA)" <ji...@apache.org> on 2011/11/04 19:07:51 UTC
[jira] [Created] (OOZIE-599) Enable Oozie to be a subscriber to a
topic on a message bus topic for job end notifications
Enable Oozie to be a subscriber to a topic on a message bus topic for job end notifications
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Key: OOZIE-599
URL: https://issues.apache.org/jira/browse/OOZIE-599
Project: Oozie
Issue Type: New Feature
Reporter: Craig Peters
Oozie should be able to listen to a user configurable topic on a message bus via JMS for job completion notifications. This requires use a general inter-component communication system using the publish/subscribe model provided by ActiveMQ. http://activemq.apache.org/ The value for Oozie and Hadoop is to enable a less brittle communication because Oozie would not poll the Job Tracker for job completion in the absence of a URL or a timeout.
Hadoop currently implements a call back URL to notify clients including Oozie that a job has completed. See https://issues.apache.org/jira/browse/MAPREDUCE-3028. This implementation has a number of challenges including that only one client can get notification easily and the implementation blocks the thread so that a bad URL blocks job tracker execution. This requires Map Reduce to enable a way for a job creator to specify which topic to which to publish the job end notification message.
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[jira] [Commented] (OOZIE-599) Enable Oozie to be a subscriber to a
topic on a message bus topic for job end notifications
Posted by "Craig Peters (Commented) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/OOZIE-599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13144233#comment-13144233 ]
Craig Peters commented on OOZIE-599:
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For more on the blocking issue on the job tracker call back in Hadoop 0.23 see https://issues.apache.org/jira/browse/OOZIE-597
> Enable Oozie to be a subscriber to a topic on a message bus topic for job end notifications
> -------------------------------------------------------------------------------------------
>
> Key: OOZIE-599
> URL: https://issues.apache.org/jira/browse/OOZIE-599
> Project: Oozie
> Issue Type: New Feature
> Reporter: Craig Peters
>
> Oozie should be able to listen to a user configurable topic on a message bus via JMS for job completion notifications. This requires use a general inter-component communication system using the publish/subscribe model provided by ActiveMQ. http://activemq.apache.org/ The value for Oozie and Hadoop is to enable a less brittle communication because Oozie would not poll the Job Tracker for job completion in the absence of a URL or a timeout.
> Hadoop currently implements a call back URL to notify clients including Oozie that a job has completed. See https://issues.apache.org/jira/browse/MAPREDUCE-3028. This implementation has a number of challenges including that only one client can get notification easily and the implementation blocks the thread so that a bad URL blocks job tracker execution. This requires Map Reduce to enable a way for a job creator to specify which topic to which to publish the job end notification message.
--
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