bitsondatadev commented on code in PR #117:
URL: https://github.com/apache/iceberg-python/pull/117#discussion_r1380591348
##########
tests/io/test_pyarrow.py:
##########
@@ -708,15 +709,17 @@ def _write_table_to_file(filepath: str, schema:
pa.Schema, table: pa.Table) -> s
@pytest.fixture
def file_int(schema_int: Schema, tmpdir: str) -> str:
- pyarrow_schema = pa.schema(schema_to_pyarrow(schema_int),
metadata={"iceberg.schema": schema_int.model_dump_json()})
+ pyarrow_schema = schema_to_pyarrow(schema_int, metadata={ICEBERG_SCHEMA:
bytes(schema_int.model_dump_json(), 'utf-8')})
Review Comment:
Should this string be using a [constant in a lib
somewhere](https://stackoverflow.com/a/44109455)? Or at we could least create
an encodings class that centralizes all the schema stuff (e.g. create a
constant for `'utf-8'`, hides `ICEBERG_SCHEMA` and expose some cleaner methods
that hides the bytes conversion, etc...
WDYT?
##########
pyiceberg/io/pyarrow.py:
##########
@@ -435,13 +435,18 @@ def delete(self, location: Union[str, InputFile,
OutputFile]) -> None:
raise # pragma: no cover - If some other kind of OSError, raise
the raw error
-def schema_to_pyarrow(schema: Union[Schema, IcebergType]) -> pa.schema:
- return visit(schema, _ConvertToArrowSchema())
+def schema_to_pyarrow(schema: Union[Schema, IcebergType], metadata:
Dict[bytes, bytes] = EMPTY_DICT) -> pa.schema:
+ return visit(schema, _ConvertToArrowSchema(metadata))
Review Comment:
What is the `visit()` behavior with an empty dict?
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