[GitHub] [airflow] yustoris edited a comment on issue #4291: [AIRFLOW-1488] Add the TriggeredDagRunSensor operator

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yustoris edited a comment on issue #4291: [AIRFLOW-1488] Add the TriggeredDagRunSensor operator
URL: https://github.com/apache/airflow/pull/4291#issuecomment-507030883
 
 
   The most significant difference between `ExternalTaskSensor` and this new sensor is whether we can trace specific DagRun(s) regardless of `execution_date`.
   
   For example, consider there is a Dag that is triggered by two different tasks A and task B and these are implemented in different DAGs.
   `TriggeredDagRunSensor` allows us to track down DagRuns triggered by specific task.
   `ExternalTaskSensor` cannot such "separation" because it doesn't consider the target Dag run is triggered by which task.

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