claudevdm commented on code in PR #35533:
URL: https://github.com/apache/beam/pull/35533#discussion_r2197974988


##########
sdks/python/apache_beam/io/gcp/bigquery.py:
##########
@@ -2723,11 +2723,12 @@ def expand(self, input):
         lambda row_and_error: row_and_error[0])
     if not is_rows:
       # return back from Beam Rows to Python dict elements
-      failed_rows = failed_rows | beam.Map(lambda row: row.as_dict())
+      failed_rows = failed_rows | beam.Map(
+          lambda row: getattr(row, 'as_dict', row._asdict)())

Review Comment:
   Thanks for the fix. If my understanding is correct here, the type returned 
from the java cross language transform is a NamedTuple, and therefore `as_dict` 
does not exist.
   
   Is there any case where the returned type is not a NamedTuple? If not, can 
we just use `_as_dict` without checking for `as_dict`. 



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