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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2020/06/18 18:32:26 UTC

[GitHub] [spark] maryannxue commented on pull request #28846: [SPARK-32012][SQL] Incrementally create and materialize query stage to avoid unnecessary local shuffle

maryannxue commented on pull request #28846:
URL: https://github.com/apache/spark/pull/28846#issuecomment-646235383


   The question is: This means you hold off the other stage, right? Shouldn't it cause any regressions? If this is eventually a SMJ instead of a BHJ, one of the stages will be delayed.
   And how do you know if you are starting the larger stage or the smaller one first??


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