[GitHub] [airflow] BasPH commented on issue #4727: [AIRFLOW-3902] Add new singleton_operator and unittest

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BasPH commented on issue #4727: [AIRFLOW-3902] Add new singleton_operator and unittest
URL: https://github.com/apache/airflow/pull/4727#issuecomment-499492360
 
 
   @kpathak13 how about splitting the second and fourth task into a separate DAG, and have tasks first & third point to a TriggerDagRunOperator, which triggers this separate DAG? With the situation I described above, this will trigger the 2nd DAG directly after tasks first & third are done, instead of waiting for nothing for half a day.
   
   Given the discussion, the behaviour of this operator is clearly quite confusing, so please be very explicit and concrete, examples would also help.

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