Seems like a copy&paste mistake: https://github.com/apache/arrow/blob/4d2ac871c9126ba431ebb193ea19bd5eb7ef8ab3/python/pyarrow/_parquet.pyx#L543 **Reporter**: [Uwe Korn](https://issues.apache.org/jira/browse/ARROW-829) / @xhochy **Assignee**: [Uwe Korn](https://issues.apache.org/jira/browse/ARROW-829) / @xhochy #### Related issues: - [Arrow 0.3 release](https://github.com/apache/arrow/issues/16293) (blocks) <sub>**Note**: *This issue was originally created as [ARROW-829](https://issues.apache.org/jira/browse/ARROW-829). Please see the [migration documentation](https://github.com/apache/arrow/issues/14542) for further details.*</sub>