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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2022/02/23 07:19:00 UTC

[GitHub] [spark] zhengruifeng commented on pull request #35609: [SPARK-38286][SQL] Union's maxRows and maxRowsPerPartition may overflow

zhengruifeng commented on pull request #35609:
URL: https://github.com/apache/spark/pull/35609#issuecomment-1048504368


   multi-table join may generate large `maxRows`, and union those joins may cause `maxRows` overflow, which may result in unexpected behavior in optimizer.
   
   this also seems a correctness issue.  @cloud-fan 
   
   
   the failed doc test also exist in other PRs, should be irrelative


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