jorisvandenbossche opened a new pull request #7523:
URL: https://github.com/apache/arrow/pull/7523
Not a polished PR, just a quick try (in cython, since that's faster for me)
to expose the RowGroupInfo statistics in Python + convert the expression into
min/max information. More as food for discussion for now.
What this enables:
```
In [1]: import pyarrow.dataset as ds
...: dataset = ds.parquet_dataset("test_parquet_dask/_metadata",
partitioning="hive")
...: fragment = list(dataset.get_fragments())[0]
...: rg = fragment.row_groups[0]
In [2]: ds.get_min_max_statistics(rg.statistics)
Out[2]:
[{'col': {'min': -1.43563008497128}},
{'col': {'max': 1.2929964609736964}},
{'index': {'min': 335}},
{'index': {'max': 359}}]
```
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