Github user cloud-fan commented on the issue:
https://github.com/apache/spark/pull/21083
It's a totally different approach to do additional filters inference from
constraints for join, and I'm not sure if it works until I finished this PR.
That's the main reason I didn't post my suggestion to the related PRs.
I actually don't care about the credites and was planning to give credites
to @mgaido91 since it's mostly inspired by the discussion with him. However
someone mentioned your PR to me at the last minute, I pulled in your tests and
found it's already covered. Then I was a little hesitate about who should get
the credites and didn't mention it in the PR desription.
If you don't mind, are you OK with giving credites to @mgaido91 ? Thanks
for your understanding!
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