[GitHub] [airflow] ashb commented on a change in pull request #14612: Default to Celery Task model when backend model does not exist

[GitBox <gi...@apache.org>]

ashb commented on a change in pull request #14612:
URL: https://github.com/apache/airflow/pull/14612#discussion_r588410178



##########
File path: airflow/executors/celery_executor.py
##########
@@ -567,7 +567,7 @@ def _get_many_from_kv_backend(self, async_tasks) -> Mapping[str, EventBufferValu
     def _get_many_from_db_backend(self, async_tasks) -> Mapping[str, EventBufferValueType]:
         task_ids = _tasks_list_to_task_ids(async_tasks)
         session = app.backend.ResultSession()
-        task_cls = app.backend.task_cls
+        task_cls = app.backend.task_cls if hasattr(app.backend, "task_cls") else TaskDb

Review comment:
       ```suggestion
           task_cls = getattr(app.backend, 'task_cls', TaskDb)
   ```




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