bkietz commented on a change in pull request #7692:
URL: https://github.com/apache/arrow/pull/7692#discussion_r452472840
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File path: python/pyarrow/_dataset.pyx
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@@ -909,13 +909,24 @@ cdef class ParquetFileFragment(FileFragment):
def __reduce__(self):
buffer = self.buffer
+ if self.row_groups is not None:
Review comment:
Note that (due to stats containing scalars) pickling of RowGroupInfo
depends on pickling of Scalars. Added ARROW-9394
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