fixup! Optimize subclasses of DummyOperator for Scheduling

kaxil · kaxil · commit 67b5daf93d7a · 2020-12-01T20:12:37.000Z
diff --git a/airflow/serialization/serialized_objects.py b/airflow/serialization/serialized_objects.py
@@ -438,7 +438,7 @@ def deserialize_operator(cls, encoded_op: Dict[str, Any]) -> BaseOperator:
                 setattr(op, field, None)
 
         # Used to determine if an Operator is inherited from DummyOperator
-        setattr(op, "_is_dummy", bool(encoded_op.get("_is_dummy")))
+        setattr(op, "_is_dummy", bool(encoded_op.get("_is_dummy", False)))
 
         return op
 
