dbtsai commented on pull request #29567: URL: https://github.com/apache/spark/pull/29567#issuecomment-683259420
This will be a very useful optimization to turn if causes into expressions that can be pushdown. For `CaseWhen` if there is only one branch, we can convert it into `If`. A PR before https://github.com/apache/spark/pull/21850 tried this optimization but didn't end up merging into master because at that time, `CaseWhen` and `If` have not much performance difference. Maybe we can revisit it again. ---------------------------------------------------------------- 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
