adriangb commented on PR #103: URL: https://github.com/apache/datafusion-site/pull/103#issuecomment-3272281519
> @adriangb @alamb what is still unclear for me, how the dynamic filter gets the min value? is it under the hood by scanning lets say stats, like parquet file footers or histograms? We can probably improve the wording but for: 1. The TopK operator it comes from the TopK Heap. 2. For joins we accumulate min/max values of the join keys for each partition as we build the build side. So the values are coming from the data itself. -- 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
