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Posted to github@arrow.apache.org by "sundy-li (via GitHub)" <gi...@apache.org> on 2023/02/23 14:43:10 UTC

[GitHub] [arrow-datafusion] sundy-li commented on issue #5276: Update benchmmarks on clickbench

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.


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