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https://issues.apache.org/jira/browse/ARROW-9115?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wes McKinney resolved ARROW-9115.
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Resolution: Fixed
Issue resolved by pull request 7418
[https://github.com/apache/arrow/pull/7418]
> [C++] Process data buffers in batch in ascii_lower / ascii_upper kernels
> rather than using string_view value iteration
> ----------------------------------------------------------------------------------------------------------------------
>
> Key: ARROW-9115
> URL: https://issues.apache.org/jira/browse/ARROW-9115
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Wes McKinney
> Assignee: Wes McKinney
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.0.0
>
> Time Spent: 1h 40m
> Remaining Estimate: 0h
>
> Also add a benchmark
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