David Li created ARROW-16420:
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Summary: [Python] pq.write_to_dataset always ignores partitioning
Key: ARROW-16420
URL: https://issues.apache.org/jira/browse/ARROW-16420
Project: Apache Arrow
Issue Type: Bug
Components: Python
Affects Versions: 8.0.0
Reporter: David Li
The code unconditionally sets {{partitioning}} to None, so the user-supplied
partitioning is ignored.
https://github.com/apache/arrow/blob/edf7334fc38ec9bc2e019bf400403e7c61fb585e/python/pyarrow/parquet/__init__.py#L3143-L3146
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