gabotechs commented on PR #19761: URL: https://github.com/apache/datafusion/pull/19761#issuecomment-3949676389
> Right, if we do it when dynamic filtering is disabled, I guess it might break execution assumptions I’m not aware of. However, if we already know the join will produce 0 rows, there’s no additional value in fetching the probe side (at least result wise). We would just be consuming unnecessary memory and increasing execution time. In any case, It would be nice to understand how other engines handle this case. I will move this to a separate issue (https://github.com/apache/datafusion/issues/20492) Yeah, it does look like a separate discussion. I also don't know why anybody would want to fetch the probe side if they know the build side has 0 rows, but if they want dynamic filter disabled, maybe they have a reason for it? 🤷♂️. We can keep talking in that other issues. -- 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]
