[jira] [Created] (AIRFLOW-6577) DAG Backfill with timedelta runs twice

["Nick Benthem (Jira)" <ji...@apache.org>]

Nick Benthem created AIRFLOW-6577:
-------------------------------------

             Summary: DAG Backfill with timedelta runs twice
                 Key: AIRFLOW-6577
                 URL: https://issues.apache.org/jira/browse/AIRFLOW-6577
             Project: Apache Airflow
          Issue Type: Bug
          Components: DAG, DagRun
    Affects Versions: 1.10.7
         Environment: ProductName:	Mac OS X
ProductVersion:	10.14.6
BuildVersion:	18G2022

Client: Docker Engine - Community
 Version:           19.03.5
 API version:       1.40
 Go version:        go1.12.12
 Git commit:        633a0ea
 Built:             Wed Nov 13 07:22:34 2019
 OS/Arch:           darwin/amd64
 Experimental:      false

            Reporter: Nick Benthem


if you use {{timedelta=__anything__}}, and have {{catchup=False}}, it will cause a DOUBLE run of your DAG! The only workaround i found was to use a cron timer, i.e.,



schedule_interval='@daily',

Rather than



schedule_interval=timedelta(days=1),





It almost definitely exists in
def create_dag_run(self, dag, session=None):
in {{/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/airflow/jobs/scheduler_job.py }}
around line {{643}}



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