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  1. Spark
  2. SPARK-37063 SQL Adaptive Query Execution QA: Phase 2
  3. SPARK-38406

Improve perfermance of ShufflePartitionsUtil createSkewPartitionSpecs

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    • Sub-task
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 3.3.0
    • 3.3.0
    • SQL
    • None

    Description

      If shuffle is skewed with tens of thousands of map partitions and reduce partitions in AQE, the method `ShufflePartitionsUtil#createSkewPartitionSpecs` will be very slow. More unfortunately, it is running at driver side.

       

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            ulysses XiDuo You
            ulysses XiDuo You
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              Updated:
              Resolved: