AngersZhuuuu opened a new pull request #29692: URL: https://github.com/apache/spark/pull/29692
### What changes were proposed in this pull request? For BroadcastNestedLoopJoin, we will broadcast boradcast-side child to all executor and use stream side partition's data traversal broadcast-side data one-by-one. We have meet some case that stream side data skew and all success task wait for skewed partition to finish. We know that the execution time increases exponentially with the amount of partition's data. If skewd with 100x, skewed partition's data will execute 100x than non-skewed part. It is a bottleneckļ¼ with AE, we can avoid this by split skewed part's data to make it more balanced. ### Why are the changes needed? NO ### Does this PR introduce _any_ user-facing change? NO ### How was this patch tested? WIP ---------------------------------------------------------------- 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: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org
