[jira] [Created] (ARROW-9493) [Python][Dataset] Dictionary encode string partition columns by default

[Ben Kietzman (Jira)]

Ben Kietzman created ARROW-9493:
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             Summary: [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
             Fix For: 1.0.0


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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