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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2020/09/07 01:15:41 UTC

[GitHub] [spark] moomindani commented on pull request #28953: [SPARK-32013][SQL] Support query execution before reading DataFrame and before/after writing DataFrame over JDBC

moomindani commented on pull request #28953:
URL: https://github.com/apache/spark/pull/28953#issuecomment-687959216


   @gatorsmile Thank you for your comment.
   I understand that this kind of hooks are not specific to JDBC, it can be general to all the data sources.
   However, for JDBC, it should be executed in data source side. This part can be specific to JDBC (or other data sources which include execution engine.).
   
   Of course we can have discussion in DSV2 API design, however, can we proceed this PR separately?


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