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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2021/06/24 01:43:03 UTC

[GitHub] [spark] zhengruifeng commented on pull request #32923: [SPARK-35783][SQL] Set the list of read columns in the task configuration to reduce reading of ORC data.

zhengruifeng commented on pull request #32923:
URL: https://github.com/apache/spark/pull/32923#issuecomment-867267920


   @cloud-fan  We are migrating from 2.4.7 to 3.0.2, and observed a significant regression in some cases due to this issue.
   
   ![image](https://user-images.githubusercontent.com/7322292/123189491-79ff6980-d4d0-11eb-919b-d7b853c24a4a.png)
   


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