Fokko commented on code in PR #921:
URL: https://github.com/apache/iceberg-python/pull/921#discussion_r1679424345
##########
tests/integration/test_add_files.py:
##########
@@ -617,3 +607,92 @@ def
test_add_files_with_timestamp_tz_ns_fails(session_catalog: Catalog, format_v
),
):
tbl.add_files(file_paths=[file_path])
+
+
[email protected]
[email protected]("format_version", [1, 2])
+def test_table_write_schema_with_valid_nullability_diff(
+ spark: SparkSession, session_catalog: Catalog, format_version: int
+) -> None:
+ identifier =
f"default.test_table_write_with_valid_nullability_diff{format_version}"
+ table_schema = Schema(
+ NestedField(field_id=1, name="long", field_type=LongType(),
required=False),
+ )
+ other_schema = pa.schema((
+ pa.field("long", pa.int64(), nullable=False), # can support writing
required pyarrow field to optional Iceberg field
+ ))
+ arrow_table = pa.Table.from_pydict(
+ {
+ "long": [1, 9],
+ },
+ schema=other_schema,
+ )
+ tbl = _create_table(session_catalog, identifier, format_version,
schema=table_schema)
+
+ file_path =
f"s3://warehouse/default/test_valid_nullability_diff/v{format_version}/test.parquet"
+ # write parquet files
+ fo = tbl.io.new_output(file_path)
+ with fo.create(overwrite=True) as fos:
+ with pq.ParquetWriter(fos, schema=other_schema) as writer:
+ writer.write_table(arrow_table)
+
+ tbl.add_files(file_paths=[file_path])
+ # table's long field should cast to be optional on read
+ written_arrow_table = tbl.scan().to_arrow()
+ assert written_arrow_table == arrow_table.cast(pa.schema((pa.field("long",
pa.int64(), nullable=True),)))
+ lhs = spark.table(f"{identifier}").toPandas()
+ rhs = written_arrow_table.to_pandas()
+
+ for column in written_arrow_table.column_names:
+ for left, right in zip(lhs[column].to_list(), rhs[column].to_list()):
+ assert left == right
+
+
[email protected]
[email protected]("format_version", [1, 2])
+def test_table_write_schema_with_valid_upcast(
+ spark: SparkSession,
+ session_catalog: Catalog,
+ format_version: int,
+ table_schema_with_promoted_types: Schema,
+ pyarrow_schema_with_promoted_types: pa.Schema,
+ pyarrow_table_with_promoted_types: pa.Table,
+) -> None:
+ identifier = f"default.test_table_write_with_valid_upcast{format_version}"
+ tbl = _create_table(session_catalog, identifier, format_version,
schema=table_schema_with_promoted_types)
+
+ file_path =
f"s3://warehouse/default/test_valid_nullability_diff/v{format_version}/test.parquet"
Review Comment:
```suggestion
file_path =
f"s3://warehouse/default/test_table_write_schema_with_valid_upcast/v{format_version}/test.parquet"
```
##########
tests/integration/test_add_files.py:
##########
@@ -617,3 +607,92 @@ def
test_add_files_with_timestamp_tz_ns_fails(session_catalog: Catalog, format_v
),
):
tbl.add_files(file_paths=[file_path])
+
+
[email protected]
[email protected]("format_version", [1, 2])
+def test_table_write_schema_with_valid_nullability_diff(
+ spark: SparkSession, session_catalog: Catalog, format_version: int
+) -> None:
+ identifier =
f"default.test_table_write_with_valid_nullability_diff{format_version}"
+ table_schema = Schema(
+ NestedField(field_id=1, name="long", field_type=LongType(),
required=False),
+ )
+ other_schema = pa.schema((
+ pa.field("long", pa.int64(), nullable=False), # can support writing
required pyarrow field to optional Iceberg field
+ ))
+ arrow_table = pa.Table.from_pydict(
+ {
+ "long": [1, 9],
+ },
+ schema=other_schema,
+ )
+ tbl = _create_table(session_catalog, identifier, format_version,
schema=table_schema)
+
+ file_path =
f"s3://warehouse/default/test_valid_nullability_diff/v{format_version}/test.parquet"
Review Comment:
```suggestion
file_path =
f"s3://warehouse/default/test_table_write_schema_with_valid_nullability_diff/v{format_version}/test.parquet"
```
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