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Posted to commits@airflow.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2020/05/01 12:50:00 UTC
[jira] [Commented] (AIRFLOW-4568) The ExternalTaskSensor should be
configurable to raise an Airflow Exception in case the poked external task
reaches a disallowed state, such as f.i. failed
[ https://issues.apache.org/jira/browse/AIRFLOW-4568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17097347#comment-17097347 ]
ASF GitHub Bot commented on AIRFLOW-4568:
-----------------------------------------
lokeshlal commented on pull request #8509:
URL: https://github.com/apache/airflow/pull/8509#issuecomment-622374574
Can someone please look into this PR.
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> The ExternalTaskSensor should be configurable to raise an Airflow Exception in case the poked external task reaches a disallowed state, such as f.i. failed
> -----------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: AIRFLOW-4568
> URL: https://issues.apache.org/jira/browse/AIRFLOW-4568
> Project: Apache Airflow
> Issue Type: Improvement
> Components: operators
> Affects Versions: 1.10.3
> Reporter: ddluke
> Priority: Minor
>
> _As an engineer, I would like to have the behavior of the ExternalTaskSensor changed_
> _So that it fails in case the poked external_task_id fails_
> *Therefore*
> * I suggest extending the behavior of the sensor to optionally also query the TaskInstance for disallowed states and raise an AirflowException if found. Currently, if the poked external task reaches a failed state, the sensor continues to poke and does not terminate
> *Acceptance Criteria (from my pov)*
> * The class interface for ExternalTaskSensor is extended with an additional parameter, disallowed_states, which is an Optional List of airflow.utils.state.State
> * The poke method is expanded to count the number of rows from TaskInstance which met the filter criteria dag_id, task_id, disallowed_states and dttm_filter if disallowed_states is not None
> * If disallowed_states is not None and the above query returns a counter > 0, an Airflow Exception is thrown
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