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  1. Hadoop Map/Reduce
  2. MAPREDUCE-3561 [Umbrella ticket] Performance issues in YARN+MR
  3. MAPREDUCE-3641

CapacityScheduler should be more conservative assigning off-switch requests

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Details

    • Sub-task
    • Status: Closed
    • Blocker
    • Resolution: Fixed
    • 0.23.0
    • 0.23.1
    • mrv2, scheduler
    • None
    • Reviewed
    • Making CapacityScheduler more conservative so as to assign only one off-switch container in a single scheduling iteration.

    Description

      In hadoop-1, the CS is very conservative handing out off-switch assignments, we need to do the same in YARN.

      We noticed performance regressions due to this, particularly for reduces.

      Attachments

        1. MAPREDUCE-3641.patch
          29 kB
          Arun Murthy
        2. MAPREDUCE-3641.patch
          18 kB
          Arun Murthy
        3. MAPREDUCE-3641.patch
          17 kB
          Arun Murthy
        4. MAPREDUCE-3641.patch
          13 kB
          Arun Murthy

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            acmurthy Arun Murthy
            acmurthy Arun Murthy
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              Updated:
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