Fokko commented on issue #1917:
URL:
https://github.com/apache/iceberg-python/issues/1917#issuecomment-2809781599
Able to reproduce it:
```python
@pytest.mark.integration
def test_add_files_hour_transform(session_catalog: Catalog) -> None:
identifier = f"default.test_add_files_hour_transform"
schema = Schema(
NestedField(1, "hourly", TimestampType())
)
schema_arrow = schema_to_pyarrow(schema, include_field_ids=False)
spec = PartitionSpec(
PartitionField(source_id=1, field_id=1000,
transform=HourTransform(), name="spec_hour")
)
tbl = _create_table(session_catalog, identifier, format_version=1,
schema=schema, partition_spec=spec)
file_path =
f"s3://warehouse/default/test_add_files_hour_transform/test.parquet"
arrow_table = pa.Table.from_pylist(
[
{
"hourly": micros_to_timestamp(1743465600155254)
},
{
"hourly": micros_to_timestamp(1743469198047855)
}
],
schema=schema_arrow,
)
fo = tbl.io.new_output(file_path)
with fo.create(overwrite=True) as fos:
with pq.ParquetWriter(fos, schema=schema_arrow) as writer:
writer.write_table(arrow_table)
tbl.add_files(file_paths=[file_path])
```
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