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From "Zachary Lawson (JIRA)" <>
Subject [jira] [Commented] (AIRFLOW-988) SLA Miss Callbacks Are Repeated if Email is Not being Used
Date Wed, 15 Mar 2017 15:47:41 GMT


Zachary Lawson commented on AIRFLOW-988:

Alternatively, you could just filter to sla_miss records that have notification_sent = True
given that in the comments it's stated:
We consider email or the alert callback as notifications.

> SLA Miss Callbacks Are Repeated if Email is Not being Used
> ----------------------------------------------------------
>                 Key: AIRFLOW-988
>                 URL:
>             Project: Apache Airflow
>          Issue Type: Bug
>    Affects Versions: Airflow 1.8
>            Reporter: Zachary Lawson
> There is an issue in the current v1-8-stable branch. Looking at the module, if
the system does not have email set up but does have a sla_miss_callback defined in the DAG,
that sla_miss_callback is repeated for that job infinitely as long as the airflow scheduler
is running. The offending code seems to be in the query to the airflow meta database which
filters to sla_miss records that have *either* email_sent or notification_sent as false ([see
lines 606-613|]),
but then executes the sla_miss_callback function regardless if notification_sent was true
([see lines 644-648|]).
A conditional statement should be put prior to executing the sla_miss_callback to check whether
a notification has been sent to prevent this.

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