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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2020/06/22 04:19:11 UTC

[GitHub] [spark] cloud-fan edited a comment on pull request #27986: [SPARK-31220][SQL] repartition obeys initialPartitionNum when adaptiveExecutionEnabled

cloud-fan edited a comment on pull request #27986:
URL: https://github.com/apache/spark/pull/27986#issuecomment-647264492


   note: `repartition` is a physical operation that users specify how many partitions to have after the shuffle. That's why Spark can't coalesce the partition, as it breaks the user's expectation.
   
   Other optimization can still happen, like SMJ to BHJ.


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