[GitHub] [airflow] nathadfield opened a new issue #14563: TaskGroup Sensor

[GitBox <gi...@apache.org>]

nathadfield opened a new issue #14563:
URL: https://github.com/apache/airflow/issues/14563


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   **Description**
   
   Enable the ability for a task in a DAG to wait upon the successful completion of an entire TaskGroup.
   
   **Use case / motivation**
   
   TaskGroups provide a great mechanism for authoring DAGs, however there are situations where it might be necessary for a task in an external DAG to wait upon the the completion of the TaskGroup as a whole.
   
   At the moment this is only possible with one of the following workarounds:
   
   1. Add an external task sensor for each task in the group.
   2. Add a Dummy task after the TaskGroup which the external task sensor waits on.
   
   I would envisage either adapting `ExternalTaskSensor` to also work with TaskGroups or creating a new `ExternalTaskGroupSensor`.
   
   **Are you willing to submit a PR?**
   
   Time permitting, yes!
   
   **Related Issues**
   
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