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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