jorisvandenbossche commented on issue #34437:
URL: https://github.com/apache/arrow/issues/34437#issuecomment-1480719738
I was just testing the FetchNode in python, and at least for a Table source,
I seem to get deterministic behaviour:
```python
import pyarrow as pa
from pyarrow._acero import TableSourceNodeOptions, FetchNodeOptions,
Declaration
table = pa.table({'a': np.arange(10_000_000)})
table = pa.Table.from_batches(table.to_batches(max_chunksize=1_000_000))
for _ in range(100):
decl = Declaration.from_sequence([
Declaration("table_source", TableSourceNodeOptions(table)),
Declaration("fetch", FetchNodeOptions(0, 5))
])
assert decl.to_table()['a'].to_pylist() == [0, 1, 2, 3, 4]
```
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