alamb commented on issue #5276:
URL:
https://github.com/apache/arrow-datafusion/issues/5276#issuecomment-1434756329
> The benchmark though should add parallelism by repartitioning after
scanning - so I would expect aggregates to be executed in parallel (even though
the scan won't be).
BTW When I ran
```
❯ SELECT "RegionID", SUM("AdvEngineID"), COUNT(*) AS c,
AVG("ResolutionWidth"), COUNT(DISTINCT "UserID") FROM hits GROUP BY "RegionID"
ORDER BY c DESC LIMIT 10;
```
Locally using `datafusion-cli` it kept all my cores quite busy, so I don't
think parallelism is the bottleneck for that particular query
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