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  1. Spark
  2. SPARK-3239

Choose disks for spilling randomly in PySpark

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Details

    • Improvement
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 1.1.0
    • 1.1.0
    • PySpark
    • None

    Description

      Currently, ExternalHashMerger spill data into disks in the same order crossing processes in same node, it will have IO contention.

      It should choose the disks randomly.

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            davies Davies Liu
            davies Davies Liu
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              Created:
              Updated:
              Resolved: