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https://issues.apache.org/jira/browse/ARROW-216?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17657250#comment-17657250
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Rok Mihevc commented on ARROW-216:
----------------------------------

This issue has been migrated to [issue 
#15562|https://github.com/apache/arrow/issues/15562] on GitHub. Please see the 
[migration documentation|https://github.com/apache/arrow/issues/14542] for 
further details.

> C++: BooleanBuilder uses storage ineffienctly
> ---------------------------------------------
>
>                 Key: ARROW-216
>                 URL: https://issues.apache.org/jira/browse/ARROW-216
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Uwe Korn
>            Priority: Major
>              Labels: newbie
>
> Although Arrow uses bit-packing for booleans, we reserve {{length}} bytes in 
> the BooleanBuilder. This should be bits, i.e. only 1/8.



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