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https://issues.apache.org/jira/browse/ARROW-7051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17397450#comment-17397450
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Alexander commented on ARROW-7051:
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More context:
[https://github.com/apache/arrow/pull/10802#discussion_r684345342]
>
This seems like a very useful utility function. I wonder if we want to put it
somewhere more visible. There could be a CreateEmptyRecordBatch and
CreateEmptyTable too. Can be done in a follow-up PR.
!https://github.githubassets.com/images/icons/emoji/unicode/1f440.png|width=20,height=20!
1
> [C++] Improve MakeArrayOfNull to support creation of multiple arrays
> --------------------------------------------------------------------
>
> Key: ARROW-7051
> URL: https://issues.apache.org/jira/browse/ARROW-7051
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Affects Versions: 0.14.0
> Reporter: Ben Kietzman
> Assignee: Alexander
> Priority: Minor
> Labels: beginner
>
> MakeArrayOfNull reuses a single buffer of {{0}} for all buffers in the array
> it creates. It could be extended to reuse that same buffer for all buffers in
> multiple arrays. This optimization will make RecordBatchProjector and
> ConcatenateTablesWithPromotion more memory efficient
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