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Posted to issues@arrow.apache.org by "Antoine Pitrou (Jira)" <ji...@apache.org> on 2020/04/22 12:44:00 UTC

[jira] [Commented] (ARROW-8553) [C++] Reimplement BitmapAnd using Bitmap::VisitWords

    [ https://issues.apache.org/jira/browse/ARROW-8553?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17089638#comment-17089638 ] 

Antoine Pitrou commented on ARROW-8553:
---------------------------------------

cc [~yibo]

> [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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