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https://issues.apache.org/jira/browse/ARROW-8788?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Erhardt resolved ARROW-8788.
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Fix Version/s: 1.0.0
Resolution: Fixed
Issue resolved by pull request 7158
[https://github.com/apache/arrow/pull/7158]
> [C#] Array builders to use bit-packed buffer builder rather than boolean
> array builder for validity map
> -------------------------------------------------------------------------------------------------------
>
> Key: ARROW-8788
> URL: https://issues.apache.org/jira/browse/ARROW-8788
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C#
> Affects Versions: 0.17.0
> Reporter: Adam Szmigin
> Priority: Minor
> Labels: pull-request-available
> Fix For: 1.0.0
>
> Time Spent: 4h 20m
> Remaining Estimate: 0h
>
> The C# array builders were recently enhanced to have support for adding
> nullable values easily, under [PR
> #7032|https://github.com/apache/arrow/pull/7032].
> However, the builders internally referenced {{BooleanArray.Builder}}, which
> itself then had logic "baked-in" for efficient bit-packing of boolean values
> into a byte buffer.
> It would be cleaner for there to be a general-purpose bit-packed buffer
> builder, and for all array builders to use that for their validity map. The
> boolean array builder would use it twice: once for values, once for validity.
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