Yuri Bendana created AIRFLOW-3415:
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             Summary: Imports become null when triggering dagruns in a loop
                 Key: AIRFLOW-3415
                 URL: https://issues.apache.org/jira/browse/AIRFLOW-3415
             Project: Apache Airflow
          Issue Type: Bug
          Components: DagRun
    Affects Versions: 1.10.1
         Environment: CentOS 7
            Reporter: Yuri Bendana


When triggering dagruns in a loop, the imported references become null on the 
second iteration.  Here is an example 
[gist|[https://gist.github.com/ybendana/3bc0791fe00b099be04aca47a8d524c9].] For 
the purposes here, you can ignore the DagRunSensor task. On the first iteration 
the 'sleeper' dag gets triggered but on the second iteration I see a 
{{TypeError: 'NoneType' object is not callable.  To }}workaround this, I have 
to copy the import (in this case trigger_dag) inside the loop.



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