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  1. Samza
  2. SAMZA-1482

Restart or fail Samza jobs in YARN when input topic partition changes

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.14.0
    • Component/s: None
    • Labels:
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      Description

      Currently, after a Samza job is started, it works only on a set of fixed input topic partitions at the start-up time. When input topic partitions are expanded, we often lose the messages sent in the new partitions, until we restart the job.

      SAMZA-882 added a input stream partition count monitor inside the JobCoordinator. This ticket is targeted to use this monitor metrics and trigger the following actions in YARN:

      1. for stateless jobs, shutdown the JobCoordinator w/ UNDEFINED status code s.t. YARN will restart the whole job
      2. for stateful jobs, shutdown the JobCoordinator w/ FAILED status code s.t. YARN will stop the whole job

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            • Assignee:
              nickpan47 Yi Pan
              Reporter:
              nickpan47 Yi Pan
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                Updated:
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