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https://issues.apache.org/jira/browse/ARROW-8553?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17090150#comment-17090150
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Yibo Cai commented on ARROW-8553:
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Will do some investigation.
> [C++] Reimplement BitmapAnd using Bitmap::VisitWords
> ----------------------------------------------------
>
> Key: ARROW-8553
> URL: https://issues.apache.org/jira/browse/ARROW-8553
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Affects Versions: 0.17.0
> Reporter: Antoine Pitrou
> Priority: Major
>
> Currently, {{BitmapAnd}} uses a bit-by-bit loop for unaligned inputs. Using
> {{Bitmap::VisitWords}} instead would probably yield a manyfold performance
> increase.
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