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https://issues.apache.org/jira/browse/ARROW-9493?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ben Kietzman resolved ARROW-9493.
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Resolution: Fixed
Issue resolved by pull request 7777
[https://github.com/apache/arrow/pull/7777]
> [Python][Dataset] Dictionary encode string partition columns by default
> -----------------------------------------------------------------------
>
> Key: ARROW-9493
> URL: https://issues.apache.org/jira/browse/ARROW-9493
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Python
> Affects Versions: 0.17.1
> Reporter: Ben Kietzman
> Assignee: Ben Kietzman
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.0.0
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> ARROW-9139 switched the default of use_legacy_dataset from True to False, but
> left dictionary encoding of string partition columns off by default.
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