[jira] [Created] (OOZIE-964) A mechanism to kill and retry workflows from coordinators

["Harsh J (JIRA)" <ji...@apache.org>]

Harsh J created OOZIE-964:
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             Summary: A mechanism to kill and retry workflows from coordinators
                 Key: OOZIE-964
                 URL: https://issues.apache.org/jira/browse/OOZIE-964
             Project: Oozie
          Issue Type: New Feature
          Components: coordinator
            Reporter: Harsh J
            Priority: Minor


One use-case of coordinator app seems to be to run a WF periodically, for say, generating updates into a HBase table from some MR input. In this case, if the MR job thats running for one of the WFs, has still not finished before the next instance is launched by the coordinator, it may be beneficial to kill the earlier jobs to free up slots so that the next one can proceed faster and be able to digest both the previous and the current inputs in its run.

We could provide a mechanism to auto-kill the WF instances launched from a coordinator and all its sub-jobs, to facilitate this at the scheduler level itself. The kill can happen based on a provided timeout value in the coord app, as one example way to do it.

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