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https://issues.apache.org/jira/browse/ARROW-10207?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Antoine Pitrou reassigned ARROW-10207:
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Assignee: Antoine Pitrou
> [C++] Unary kernels that results in a list have no preallocated offset buffer
> -----------------------------------------------------------------------------
>
> Key: ARROW-10207
> URL: https://issues.apache.org/jira/browse/ARROW-10207
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Maarten Breddels
> Assignee: Antoine Pitrou
> Priority: Minor
> Fix For: 3.0.0
>
>
> I noticed in
> [https://github.com/apache/arrow/pull/8271]
> That a string->list[string] kernel does not have the offsets preallocated in
> the output. I believe there is a preference for not doing allocations in
> kernels, so this can be optimized at a higher level. I think it can also be
> done in this case.
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