Yicong-Huang commented on code in PR #55530:
URL: https://github.com/apache/spark/pull/55530#discussion_r3263909317
##########
python/pyspark/worker.py:
##########
@@ -2940,20 +2920,9 @@ def dataframe_iter():
parsed_offsets = extract_key_value_indexes(arg_offsets)
- # Pre-compute expected column names/types for strict result validation.
- # Cogrouped map has a strict contract: missing, extra, or
type-mismatched
- # columns must raise; no silent coercion.
- if runner_conf.assign_cols_by_name:
- expected_cols_and_types = {
- col.name: to_arrow_type(col.dataType, timezone="UTC") for col
in return_type.fields
- }
- reorder_names = [col.name for col in return_type.fields]
- else:
- expected_cols_and_types = [
- (col.name, to_arrow_type(col.dataType, timezone="UTC"))
- for col in return_type.fields
- ]
- reorder_names = None
+ arrow_return_schema = pa.schema(
+ [(col.name, to_arrow_type(col.dataType, timezone="UTC")) for col
in return_type.fields]
+ )
Review Comment:
This was a real bug (missed behavior). I have it fixed in
SPARK-56929(#55961).
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