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Posted to issues@arrow.apache.org by "Wes McKinney (JIRA)" <ji...@apache.org> on 2016/12/27 15:23:58 UTC

[jira] [Closed] (ARROW-216) C++: BooleanBuilder uses storage ineffienctly

     [ https://issues.apache.org/jira/browse/ARROW-216?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wes McKinney closed ARROW-216.
------------------------------
    Resolution: Not A Problem

{{ArrayBuilder::Reserve}} calls {{Resize}}, which is virtual and overridden (to account for bitpacking) in {{BooleanBuilder}}. https://github.com/apache/arrow/blob/master/cpp/src/arrow/builder.cc#L221

> 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 L. Korn
>              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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