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  1. Spark
  2. SPARK-31412 New Adaptive Query Execution in Spark SQL
  3. SPARK-30524

Disable OptimizeSkewJoin rule if introducing additional shuffle.

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Details

    • Sub-task
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 3.0.0
    • 3.0.0
    • SQL
    • None

    Description

      The OptimizeSkewedJoin will break the outputPartitioning of origin SMJ. And it may introduce additional shuffle after apply the OptimizeSkewedJoin. This PR will disable "OptimizeSkewedJoin" rule if introducing additional shuffle.

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            Jk_Self Ke Jia Assign to me
            Jk_Self Ke Jia
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