ashb commented on a change in pull request #20743:
URL: https://github.com/apache/airflow/pull/20743#discussion_r786197515
##########
File path: airflow/serialization/serialized_objects.py
##########
@@ -658,7 +694,8 @@ def deserialize_operator(cls, encoded_op: Dict[str, Any])
-> BaseOperator:
setattr(op, k, v)
for k in op.get_serialized_fields() - encoded_op.keys() -
cls._CONSTRUCTOR_PARAMS.keys():
- setattr(op, k, None)
+ if not hasattr(op, k):
Review comment:
```suggestion
# TODO: refactor deserialization of BaseOperator and
MappedOperaotr (split it out), then check could go away.
if not hasattr(op, k):
```
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