alamb commented on issue #15177: URL: https://github.com/apache/datafusion/issues/15177#issuecomment-2740980237
> Thanks for checking [@alamb](https://github.com/alamb) ! > > I think a large portion is spent in the hash join (repartitioning the right side input) - I think because it runs as `Partitioned` hash join, instead of realizing it could use `CollectLeft` (see repartition_time=55.648133838s) for the small side (10 rows). I also think the `Url`, `WatchID` and `EventDate` columns will be decoded twice. To make that join go really fast we would need something like: - https://github.com/apache/datafusion/issues/7955 -- 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
