uranusjr commented on code in PR #28128:
URL: https://github.com/apache/airflow/pull/28128#discussion_r1040685948


##########
airflow/jobs/scheduler_job.py:
##########
@@ -880,13 +880,21 @@ def _run_scheduler_loop(self) -> None:
                     # is finished to avoid concurrent access to the DB.
                     self.log.debug("Waiting for processors to finish since 
we're using sqlite")
                     self.processor_agent.wait_until_finished()
-
-                with create_session() as session:
-                    num_queued_tis = self._do_scheduling(session)
-
-                    self.executor.heartbeat()
-                    session.expunge_all()
-                    num_finished_events = 
self._process_executor_events(session=session)
+                max_retry_count = conf.getint('scheduler', 
'scheduler_loop_max_retries', fallback=5)

Review Comment:
   Yes. Optional keys should be added as a commented out value (there are 
several examples) so they can be discovered by users.



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