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https://issues.apache.org/jira/browse/AIRFLOW-3336?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kaxil Naik resolved AIRFLOW-3336.
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Resolution: Fixed
Fix Version/s: 2.0.0
Resolved by https://github.com/apache/incubator-airflow/pull/4182
> Add ability for "skipped" state to be considered success
> --------------------------------------------------------
>
> Key: AIRFLOW-3336
> URL: https://issues.apache.org/jira/browse/AIRFLOW-3336
> Project: Apache Airflow
> Issue Type: Improvement
> Components: DAG
> Reporter: Ryan Nowacoski
> Assignee: Ryan Nowacoski
> Priority: Trivial
> Labels: beginner, usability
> Fix For: 2.0.0
>
>
> Take the case where a task has 2 or more upstream parents and 1 or more of
> them can skipped. If TriggerRule ALL_DONE is used then the task will trigger
> even when upstream tasks fail. However if TriggerRule ALL_SUCCESS is used the
> task won't be triggered if any upstream are skipped. This creates a gap in
> functionality where it is necessary for "skipped" to be treated as "success"
> so that the task only runs if all parents succeed or are skipped. Said
> another way this allows tasks to be run if all ancestors do NOT fail.
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