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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2022/02/08 15:02:43 UTC

[GitHub] [spark] cloud-fan commented on pull request #35290: [SPARK-37865][SQL][3.0]Fix union bug when the first child of union has duplicate columns

cloud-fan commented on pull request #35290:
URL: https://github.com/apache/spark/pull/35290#issuecomment-1032705677


   OK we have two choices here:
   1. Only fix it in the master branch (Spark 3.3), then your approach will be acceptable.
   2. Use my approach to fix 3.0/3.1/3.2, and fix the Union problem completely in the master branch.
   
   Which one do you prefer? Or do you have a better idea to fix this bug without any BREAKING change?


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