kaxil commented on code in PR #56202:
URL: https://github.com/apache/airflow/pull/56202#discussion_r2388500044


##########
airflow-core/src/airflow/serialization/serialized_objects.py:
##########
@@ -2095,6 +2096,9 @@ def _deserialize_field_value(cls, field_name: str, value: 
Any) -> Any:
             # Reuse existing timedelta deserialization logic
             if value is not None:
                 return cls._deserialize_timedelta(value)
+            # Return default for retry_delay to prevent None values during 
migration
+            if field_name == "retry_delay":
+                return DEFAULT_RETRY_DELAY

Review Comment:
   No! Change the following
   
   ```diff
   diff --git a/airflow-core/src/airflow/serialization/serialized_objects.py 
b/airflow-core/src/airflow/serialization/serialized_objects.py
   index a9a29a6b4d..2dbae45801 100644
   --- a/airflow-core/src/airflow/serialization/serialized_objects.py
   +++ b/airflow-core/src/airflow/serialization/serialized_objects.py
   @@ -1291,7 +1291,7 @@ class SerializedBaseOperator(DAGNode, 
BaseSerialization):
    
        resources: dict[str, Any] | None = None
        retries: int = 0
   -    retry_delay: datetime.timedelta
   +    retry_delay: datetime.timedelta = datetime.timedelta(seconds=300)
        retry_exponential_backoff: bool = False
        run_as_user: str | None = None
   ```



##########
airflow-core/src/airflow/serialization/serialized_objects.py:
##########
@@ -2095,6 +2096,9 @@ def _deserialize_field_value(cls, field_name: str, value: 
Any) -> Any:
             # Reuse existing timedelta deserialization logic
             if value is not None:
                 return cls._deserialize_timedelta(value)
+            # Return default for retry_delay to prevent None values during 
migration
+            if field_name == "retry_delay":
+                return DEFAULT_RETRY_DELAY

Review Comment:
   It should handle this case



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