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https://issues.apache.org/jira/browse/AIRFLOW-6535?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jon Stern updated AIRFLOW-6535:
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Component/s: documentation
> add exception subclass to fail immediately without retrying
> -----------------------------------------------------------
>
> Key: AIRFLOW-6535
> URL: https://issues.apache.org/jira/browse/AIRFLOW-6535
> Project: Apache Airflow
> Issue Type: New Feature
> Components: documentation, models
> Affects Versions: master
> Reporter: Jon Stern
> Priority: Minor
>
> I would like to be able to configure certain tasks to retry, but to also have
> a way to bypass retry if I can detect a condition that is unlikely to be
> change for the better.
> For example, imagine I have a DAG with a large number of tasks that fetch
> data from an API ... sometimes the API returns a 200 and everything is fine,
> sometimes the API returns a 500 and I know this means that API is failing
> under load and I want to retry later, and sometimes the API returns a 400
> indicating that I've configured my requests in a way that will never succeed.
> If the API returns a 400 for some/all of my tasks, then I have to wait for
> all of them to get through all their retries before the run fails.
> My proposal is to add another subclass of AirflowException called
> AirflowFailException, and to update the exception handling in
> TaskInstance.run_raw_task such that when this exception is seen, the
> resulting behavior is that same as if we entered handle_failure and
> is_eligible_for_returned false (except with adjusted logging so it does not
> look like we simply hit our retry limit).
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