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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2020/06/10 07:15:48 UTC

[GitHub] [spark] JkSelf commented on pull request #28669: [SPARK-31864][SQL] Adjust AQE skew join trigger condition

JkSelf commented on pull request #28669:
URL: https://github.com/apache/spark/pull/28669#issuecomment-641782521


   @manuzhang If you adjust the configuration of `spark.sql.adaptive.skewJoin.skewedPartitionFactor ` between  0 and 1, can the 13GB partition be split? If so, can we set the skewed related configurations to trigger the skew optimization not revert this PR? I think this PR is meaningful when the rule of `OptimizeSkewedJoin` is behind `CoalesceShufflePartitions` in the `queryStageOptimizerRules` of `AdaptiveSparkPlanExec`. 


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