shujingyang-db commented on code in PR #52140:
URL: https://github.com/apache/spark/pull/52140#discussion_r2317227159
##########
python/pyspark/sql/pandas/serializers.py:
##########
@@ -201,9 +201,26 @@ class
ArrowStreamArrowUDTFSerializer(ArrowStreamUDTFSerializer):
Serializer for PyArrow-native UDTFs that work directly with PyArrow
RecordBatches and Arrays.
"""
- def __init__(self, table_arg_offsets=None):
+ def __init__(self, table_arg_offsets=None, arrow_cast=True):
super().__init__()
self.table_arg_offsets = table_arg_offsets if table_arg_offsets else []
+ self._arrow_cast = arrow_cast
+
+ def _create_array(self, arr, arrow_type):
+ import pyarrow as pa
+
+ assert isinstance(arr, pa.Array)
+ assert isinstance(arrow_type, pa.DataType)
+
+ if arr.type == arrow_type:
+ return arr
+ elif self._arrow_cast:
+ return arr.cast(target_type=arrow_type, safe=True)
Review Comment:
Arrow UDF has the same
[implementation](https://github.com/apache/spark/blob/885bfc22cb0d315519384568c9cb0dce2c0f556f/python/pyspark/sql/pandas/serializers.py#L726).
cc: @zhengruifeng please keep me honest.
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