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  1. Hadoop Map/Reduce
  2. MAPREDUCE-1974

FairScheduler can preempt the same task many times

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 0.21.0, 0.21.1, 0.22.0, 0.23.0
    • 0.22.0
    • contrib/fair-share
    • None
    • Reviewed

    Description

      In FairScheduler.preemptTasks(), tasks are collected from JobInProgress.runningMapCache.
      But tasks repeat multiple times in JobInProgress.runningMapCache (on rack, node and cluster).
      This makes FairScheduler preempt the same task many times.

      Attachments

        1. MAPREDUCE-1974.txt
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          Scott Chen

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              Updated:
              Resolved:

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