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https://issues.apache.org/jira/browse/ARROW-1896?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wes McKinney resolved ARROW-1896.
---------------------------------
Resolution: Fixed
Issue resolved by pull request 3642
[https://github.com/apache/arrow/pull/3642]
> [C++] Do not allocate memory for primitive outputs in CastKernel::Call
> implementation
> -------------------------------------------------------------------------------------
>
> Key: ARROW-1896
> URL: https://issues.apache.org/jira/browse/ARROW-1896
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Wes McKinney
> Assignee: Wes McKinney
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.13.0
>
> Time Spent: 5h 20m
> Remaining Estimate: 0h
>
> This is some refactoring / tidying. Unless an output of cast has a
> non-determinate size (e.g. is Binary or something else), the
> {{CastKernel::Call}} implementation should assume that it is writing into
> pre-allocated memory. The corresponding memory allocation can be lifted into
> the {{arrow::compute::Cast}} API
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