HyukjinKwon commented on code in PR #44531:
URL: https://github.com/apache/spark/pull/44531#discussion_r1439118775
##########
python/pyspark/sql/worker/plan_data_source_read.py:
##########
@@ -258,8 +261,25 @@ def batched(iterator: Iterator, n: int) -> Iterator:
},
)
- for col in range(num_cols):
- pylist[col].append(column_converters[col](result[col]))
+ # Assign output values by name of the field, not position,
if the result is a
+ # named `Row` object.
+ if isinstance(result, Row) and hasattr(result,
"__fields__"):
Review Comment:
Can we match the implementation with python worker? See
`assign_cols_by_name` at `worker.py`.
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