o-nikolas commented on code in PR #30426:
URL: https://github.com/apache/airflow/pull/30426#discussion_r1207304449


##########
tests/executors/test_celery_executor.py:
##########
@@ -248,6 +249,22 @@ def test_cleanup_stuck_queued_tasks(self, mock_fail):
         assert app.control.revoke.called_with("231")
         assert mock_fail.called_once()
 
+    @conf_vars({("celery", "result_backend_engine_options"): '{"pool_recycle": 
1800}'})
+    @mock.patch("celery.Celery")
+    def test_result_backend_engine_options(self, mock_celery):
+        import importlib
+
+        from airflow.config_templates import default_celery
+
+        # relaod celery conf to apply the new config

Review Comment:
   ```suggestion
           # reload celery conf to apply the new config
   ```



##########
airflow/config_templates/config.yml:
##########
@@ -2041,6 +2041,13 @@ celery:
       sensitive: true
       example: "db+postgresql://postgres:airflow@postgres/airflow"
       default: ~
+    result_backend_engine_options:
+      description: |
+        Optional options dictionary to pass to the Celery result backend 
SQLAlchemy engine.

Review Comment:
   "Optional options" is a mouthful, what about: 
   ```suggestion
           Optional configuration dictionary to pass to the Celery result 
backend SQLAlchemy engine.
   ```



##########
tests/executors/test_celery_executor.py:
##########
@@ -248,6 +249,22 @@ def test_cleanup_stuck_queued_tasks(self, mock_fail):
         assert app.control.revoke.called_with("231")
         assert mock_fail.called_once()
 
+    @conf_vars({("celery", "result_backend_engine_options"): '{"pool_recycle": 
1800}'})
+    @mock.patch("celery.Celery")
+    def test_result_backend_engine_options(self, mock_celery):
+        import importlib
+
+        from airflow.config_templates import default_celery
+
+        # relaod celery conf to apply the new config
+        importlib.reload(default_celery)
+        # reload celery_executor to recreate the celery app with new config
+        importlib.reload(celery_executor)

Review Comment:
   This will create a logical conflict (git won't be able to detect) with #31001
   Whoever merges first will have to resolve that, but it is a very easy fix 
(just reload the utils module instead)



##########
airflow/config_templates/config.yml:
##########
@@ -2041,6 +2041,13 @@ celery:
       sensitive: true
       example: "db+postgresql://postgres:airflow@postgres/airflow"
       default: ~
+    result_backend_engine_options:

Review Comment:
   Does this only apply to the DB/SQLAlchemy backend as the description 
explains? If so we should change the name to be more specific (and if not we 
should change the description wording to be more generic).



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