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https://issues.apache.org/jira/browse/AIRFLOW-4232?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16811501#comment-16811501
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ASF subversion and git services commented on AIRFLOW-4232:
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Commit ec631954b858d8c8f602989106a6fd53733ca1a9 in airflow's branch
refs/heads/master from al
[ https://gitbox.apache.org/repos/asf?p=airflow.git;h=ec63195 ]
[AIRFLOW-4232] Add `none_skipped` trigger rule (#5032)
Downstream tasks should run as long as their parents are in
`success`, `failed`, or `upstream_failed` states.
> Add a "none_skipped" trigger rule
> ---------------------------------
>
> Key: AIRFLOW-4232
> URL: https://issues.apache.org/jira/browse/AIRFLOW-4232
> Project: Apache Airflow
> Issue Type: New Feature
> Reporter: al
> Assignee: al
> Priority: Trivial
> Labels: triggers
> Fix For: 1.10.3
>
>
> Add a "none_skipped" trigger rule so that downstream tasks will only run if
> _all_ their upstream tasks have succeeded or failed.
> Example:
> * Task 1 is a transform task that creates a temp table.
> * Task 2 is a cleanup task that drops the temp table.
> Task 1 >> Task 2
> If Task 1 succeeds or fails, Task 2 should drop the temp table as cleanup.
> However if the task never runs, we should just skip it.
> Or perhaps Task 2 is a logging task that only logs successes and failures,
> but doesn't log skips to cut down on noise.
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