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https://issues.apache.org/jira/browse/ARROW-1733?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wes McKinney closed ARROW-1733.
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Resolution: Won't Fix
I agree, let's just trust jemalloc. This is a fairly esoteric optimization and
we can investigate when it comes up (which may be multiple years)
> [C++] Utility for allocating fixed-size mutable primitive ArrayData with a
> single memory allocation
> ---------------------------------------------------------------------------------------------------
>
> Key: ARROW-1733
> URL: https://issues.apache.org/jira/browse/ARROW-1733
> Project: Apache Arrow
> Issue Type: New Feature
> Components: C++
> Reporter: Wes McKinney
> Priority: Major
>
> The validity bitmap and the values for the primitive data would be part of a
> single allocation, so better heap locality and possibly better performance in
> aggregate. This same approach is also being worked on for Java
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