[jira] [Commented] (AIRFLOW-4596) Capture stats for dagrun schedule delay for adhoc/nonschduled task

["Himanshu Garg (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AIRFLOW-4596?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16851767#comment-16851767 ] 

Himanshu Garg commented on AIRFLOW-4596:
----------------------------------------

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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