sundy-li opened a new issue #839: URL: https://github.com/apache/arrow-datafusion/issues/839
`hash_aggregate` is using `compute::take` to split the columns into lots of small columns. This is the main reason why `hash_aggregate` works slow. https://github.com/apache/arrow-datafusion/blob/4ddd2f5e7582ffe662aea27bbb74c58cd0715152/datafusion/src/physical_plan/hash_aggregate.rs#L422-L438 -- 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]
