zhengruifeng opened a new pull request #34367: URL: https://github.com/apache/spark/pull/34367
### What changes were proposed in this pull request? add a new node `RankLimit` to filter out uncessary data in the map side. ### Why are the changes needed? 1, reduce the shuffle amount; 2, solve skewed-window problem, a practice case is optimized from 2.5h to 26min ### Does this PR introduce _any_ user-facing change? a new config is added ### How was this patch tested? added testsuits -- 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. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
