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  1. Spark
  2. SPARK-17304

TaskSetManager.abortIfCompletelyBlacklisted is a perf. hotspot in scheduler benchmark

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: 2.1.0
    • Fix Version/s: 2.1.0
    • Component/s: Scheduler
    • Labels:
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    • Target Version/s:

      Description

      If you run

      sc.parallelize(1 to 100000, 100000).map(identity).count()
      

      then TaskSetManager.abortIfCompletelyBlacklisted() is the number-one performance hotspot in the scheduler, accounting for over half of the time. This method was introduced in SPARK-15865, so this is a performance regression in 2.1.0-SNAPSHOT.

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              • Assignee:
                joshrosen Josh Rosen
                Reporter:
                joshrosen Josh Rosen
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                • Created:
                  Updated:
                  Resolved: