Wes McKinney created ARROW-1961:
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Summary: [Python] Writing Parquet file with flavor='spark' loses
pandas schema metadata
Key: ARROW-1961
URL: https://issues.apache.org/jira/browse/ARROW-1961
Project: Apache Arrow
Issue Type: Bug
Components: Python
Reporter: Wes McKinney
Fix For: 0.9.0
You can see the issue in the {{_sanitize_schema}} method
https://github.com/apache/arrow/blob/master/python/pyarrow/parquet.py#L201
see https://github.com/apache/arrow/issues/1452
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