alamb commented on issue #7363:
URL: https://github.com/apache/arrow-rs/issues/7363#issuecomment-2769850463
I profiled this command:
```
./datafusion-cli-filter-pushdown -c "SELECT \"WatchID\", \"ClientIP\",
COUNT(*) AS c, SUM(\"IsRefresh\"), AVG(\"ResolutionWidth\") FROM hits WHERE
\"SearchPhrase\" <> '' GROUP BY \"WatchID\", \"ClientIP\" ORDER BY c DESC LIMIT
10;"
```
And I see that about 15% of the time is being spent "skipping" records --
aka evaluating the RowSelection in the parquet reader
This is likely the same observation that lead @XiangpengHao to propose
adding bitmask support in
- https://github.com/apache/arrow-rs/pull/6624
I need to think about what the right next steps are
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