HyukjinKwon commented on PR #48955:
URL: https://github.com/apache/arrow/pull/48955#issuecomment-3797352160
Ah yeah. If I am correct, this behaviour is not being specifically tested.
Yes. so I am removing the question, and adding a regression test.
The nullability comparison/behaviour from:
```python
pc.array_sort_indices(pa.array([None, None, None, None], type=pa.int8()))
```
is already consistent with:
```python
pc.array_sort_indices(pa.DictionaryArray.from_arrays(
indices=pa.array([None, None, None, None], type=pa.int8()),
dictionary=pa.array([], type=pa.null())
))
```
so I believe we don't necessarily have to change.
I am happy to remove the test or do something else if you have other
preferences!
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