sundy-li commented on issue #5276: URL: https://github.com/apache/arrow-datafusion/issues/5276#issuecomment-1441911393
> I guess @alamb is correct and grouping/aggregation code needs improvements. That's right, duckdb has very impressive grouping/aggregation improvements. Details in [blog](https://duckdb.org/2022/03/07/aggregate-hashtable.html). ClickBench is almost for `grouping/aggregation` and `high cardinality distinct`, so If datafusion wants to have better performance in this bench, it must need a high-performance hashtable which suits for OLAP queries. -- 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]
