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  1. Hadoop Map/Reduce
  2. MAPREDUCE-825

JobClient completion poll interval of 5s causes slow tests in local mode

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Details

    • Bug
    • Status: Closed
    • Minor
    • Resolution: Fixed
    • None
    • 0.21.0
    • None
    • None
    • Reviewed

    Description

      The JobClient.NetworkedJob.waitForCompletion() method polls for job completion every 5 seconds. When running a set of short tests in pseudo-distributed mode, this is unnecessarily slow and causes lots of wasted time. When bandwidth is not scarce, setting the poll interval to 100 ms results in a 4x speedup in some tests. This interval should be parametrized to allow users to control the interval for testing purposes.

      Attachments

        1. completion-poll-interval.patch
          3 kB
          Aaron Kimball
        2. MAPREDUCE-825.2.patch
          6 kB
          Aaron Kimball

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            kimballa Aaron Kimball
            kimballa Aaron Kimball
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            Dates

              Created:
              Updated:
              Resolved: