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https://issues.apache.org/jira/browse/ARROW-10697?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17238273#comment-17238273
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Antoine Pitrou commented on ARROW-10697:
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Ok, some observations:
* {{BitmapUInt64Reader}} is better on small bitmaps, but
{{BitmapWordReader<uint64_t>}} is better on large ones
* a hypothetical {{BitmapUInt64Writer}} implemented similarly as
{{BitmapUInt64Reader}} is worse on large bitmaps than
{{BitmapWordWriter<uint64_t>}}
* {{Bitmap::VisitWords}} (as used for Kleene logic kernels) is really strong
when reading more than 2 bitmaps in lockstep
> [C++] Consolidate bitmap word readers
> -------------------------------------
>
> Key: ARROW-10697
> URL: https://issues.apache.org/jira/browse/ARROW-10697
> Project: Apache Arrow
> Issue Type: Task
> Components: C++
> Reporter: Antoine Pitrou
> Assignee: Antoine Pitrou
> Priority: Minor
>
> We currently have {{BitmapWordReader}}, {{BitmapUInt64Reader}} and
> {{Bitmap::VisitWords}}.
> We should try to consolidate those, assuming benchmarks don't regress.
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