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https://issues.apache.org/jira/browse/AIRFLOW-4596?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16851767#comment-16851767
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Himanshu Garg commented on AIRFLOW-4596:
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cc [~vardan]
> Capture stats for dagrun schedule delay for adhoc/nonschduled task
> ------------------------------------------------------------------
>
> Key: AIRFLOW-4596
> URL: https://issues.apache.org/jira/browse/AIRFLOW-4596
> Project: Apache Airflow
> Issue Type: New Feature
> Components: models
> Affects Versions: 1.10.3
> Reporter: Himanshu Garg
> Assignee: Himanshu Garg
> Priority: Major
>
> With respect to the metric we are capturing in airflow version v1-10 -
> https://github.com/apache/airflow/blob/v1-10-stable/docs/metrics.rst. The
> Timer merics `dagrun.schedule_delay.<dag_id>` `Seconds of delay between the
> scheduled DagRun start date and the actual DagRun start date`
> we are capturig the delay of only schduled Dags.
> But we can also include delay in the adhoc/non-scheduled Dags by capturing
> the difference between `start_date` in `dag_run` table and `start_date` in
> `task_instance` table keeping the `dag_id` and `excecution` date as the
> cardinality for performing join.
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