[GitHub] [airflow] ashb commented on a change in pull request #5890: [AIRFLOW-5274] dag loading duration metric name too long

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ashb commented on a change in pull request #5890: [AIRFLOW-5274] dag loading duration metric name too long
URL: https://github.com/apache/airflow/pull/5890#discussion_r317033128
 
 

 ##########
 File path: airflow/models/dagbag.py
 ##########
 @@ -409,11 +409,15 @@ def collect_dags(
             stats, key=lambda x: x.duration, reverse=True)
         for file_stat in self.dagbag_stats:
             dag_ids = dags_by_name[file_stat.dags]
-            if file_stat.dag_num >= 1:
-                # if we found multiple dags per file, the stat is 'dag_id1 _ dag_id2'
-                dag_names = '_'.join(dag_ids)
+            if file_stat.dag_num == 1:
+                # if the file has only one dag, it uses dag.loading-duration.dagID for metric
                 Stats.timing('dag.loading-duration.{}'.
-                             format(dag_names),
+                             format(dag_ids[0]),
+                             file_stat.duration)
 
 Review comment:
   I think for consistency we should always use the filename - otherwise any monitoring dashboards of load time will be "mixed"

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