ashb commented on a change in pull request #7527: [AIRFLOW-6907] Simplify 
SchedulerJob
URL: https://github.com/apache/airflow/pull/7527#discussion_r383812108
 
 

 ##########
 File path: airflow/jobs/scheduler_job.py
 ##########
 @@ -1098,37 +1094,20 @@ def _find_executable_task_instances(self, 
simple_dag_bag, states, session=None):
         TI = models.TaskInstance
         DR = models.DagRun
         DM = models.DagModel
-        ti_query = (
+        task_instances_to_examine = (
             session
             .query(TI)
             .filter(TI.dag_id.in_(simple_dag_bag.dag_ids))
             .outerjoin(
-                DR,
-                and_(DR.dag_id == TI.dag_id, DR.execution_date == 
TI.execution_date)
+                DR, and_(DR.dag_id == TI.dag_id, DR.execution_date == 
TI.execution_date)
             )
-            .filter(or_(DR.run_id == None,  # noqa: E711 pylint: 
disable=singleton-comparison
-                    not_(DR.run_id.like(BackfillJob.ID_PREFIX + '%'))))
+            .filter(or_(DR.run_id.is_(None), 
not_(DR.run_id.like(BackfillJob.ID_PREFIX + '%'))))
             .outerjoin(DM, DM.dag_id == TI.dag_id)
-            .filter(or_(DM.dag_id == None,  # noqa: E711 pylint: 
disable=singleton-comparison
-                    not_(DM.is_paused)))
+            .filter(or_(DM.dag_id.is_(None), not_(DM.is_paused)))
 
 Review comment:
   @nuclearpinguin This was an example of where we don't need a noqa anymore -- 
do you know why you did on your pylint fixes to jobs? Is it because we are 
ignoring this whole file?

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