alamb commented on issue #18411: URL: https://github.com/apache/datafusion/issues/18411#issuecomment-3490378796
> If we just focus on DataFusion performance, it is easy to see, that for low cardinality grouping with two dict encoded columns it is spending too much time on hashing and on memcmp, 🤔 figuring out how to avoid re-hashing the same short values over and over again (StringView can be thought of as a type of dictionary encoding) is a very interesting possibility -- 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]
