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https://issues.apache.org/jira/browse/ARROW-553?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17657587#comment-17657587
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Rok Mihevc commented on ARROW-553:
----------------------------------
This issue has been migrated to [issue
#16190|https://github.com/apache/arrow/issues/16190] on GitHub. Please see the
[migration documentation|https://github.com/apache/arrow/issues/14542] for
further details.
> C++: Faster valid bitmap building
> ---------------------------------
>
> Key: ARROW-553
> URL: https://issues.apache.org/jira/browse/ARROW-553
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Uwe Korn
> Assignee: Uwe Korn
> Priority: Major
> Fix For: 0.2.0
>
>
> Currently we build up the bitmaps bit-by-bit which takes very long. Instead
> we can build them byte-by-byte in the general case and use {{memset}} for the
> non-null case.
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