maropu commented on pull request #28733: URL: https://github.com/apache/spark/pull/28733#issuecomment-642483286
(Just to check) Btw, it seems the previous works about CNF tried to implement this conversion in an independent rule for `Filter` plans (e.g., the @viirya one: https://github.com/apache/spark/pull/15558/files#diff-a1acb054bc8888376603ef510e6d0ee0R139). On the other hand, this PR only targets at join queries. Is this because this conversion has a severe trade-off relationship between time complexity / performance gains, but join quries can get much performance improvements even in this case? Is my understanding correct? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
