ikrommyd opened a new issue, #49683:
URL: https://github.com/apache/arrow/issues/49683
### Describe the bug, including details regarding any error messages,
version, and platform.
A `fixed_size_list<T>` array with `list_size=0` can be written to Parquet
successfully but fails to read back with
```
ArrowInvalid: Expected all lists to be of size=0 but index 1 had size=1
```
Note also that the high-level constructor
`pa.FixedSizeListArray.from_arrays` explicitly rejects `list_size=0` with
`"list_size needs to be a strict positive integer"`, but the type can still be
constructed via `Array.from_buffers`, and `pq.write_table` accepts it without
complaint. The API is inconsistent: either the type should be rejected
everywhere, or it should round-trip correctly.
```
inner = pa.array([], type=pa.float32()) # 0 child values
fsl = pa.FixedSizeListArray.from_arrays(inner, list_size=0)
```
raises
```
ArrowInvalid: list_size needs to be a strict positive integer
```
### Reproducer
```python
import pyarrow as pa
import pyarrow.parquet as pq
fsl = pa.Array.from_buffers(
pa.list_(pa.float32(), 0),
length=50,
buffers=[None],
children=[pa.array([], type=pa.float32())],
)
table = pa.table({"x": fsl})
pq.write_table(table, "tmp.parquet") # OK
pq.read_table("tmp.parquet") # ArrowInvalid
```
### Component(s)
Parquet, Python
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