aokolnychyi commented on pull request #35395:
URL: https://github.com/apache/spark/pull/35395#issuecomment-1071474428


   I agree it may be beneficial to plan the filtering subquery differently if 
the job planning is fast. I am open to exposing a different scan builder for 
runtime filtering. Then data sources may choose to reuse the same scan if they 
want to but Spark will be flexible. We can discuss it one more time on the PR 
for runtime filtering. For now, a separate scan builder seems a better option.
   
   In either case, using `SupportsRuntimeFiltering` should work well and will 
be backward compatible with the current API. What do you think, @cloud-fan?


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