jayzhan211 commented on PR #15867: URL: https://github.com/apache/datafusion/pull/15867#issuecomment-2833713281
> BTW, if we want to run count distinct in big data scenario, we have to use two-step process. so I think we have to add an configure to toggle this optimization. We can control the skip partial aggregation ratio, the lower the ration the more likely the partial aggregation is skipped, so we probably don't need another switch to control two-step or single step. -- 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: github-unsubscr...@datafusion.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For additional commands, e-mail: github-h...@datafusion.apache.org
