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https://issues.apache.org/jira/browse/ARROW-360?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wes McKinney resolved ARROW-360.
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Resolution: Fixed
Issue resolved by pull request 272
[https://github.com/apache/arrow/pull/272]
> C++: Add method to shrink PoolBuffer using realloc
> --------------------------------------------------
>
> Key: ARROW-360
> URL: https://issues.apache.org/jira/browse/ARROW-360
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Uwe L. Korn
> Assignee: Uwe L. Korn
>
> In the case where we have optimistically allocated a large PoolBuffer, we
> could shrink it later again using a call to {{realloc}}. This should free the
> exceeding memory but avoids an actual {{memcpy}}.
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