[jira] [Created] (AIRFLOW-669) JobScheduler skips the first dag run

["Eric Moritz (JIRA)" <ji...@apache.org>]

Eric Moritz created AIRFLOW-669:
-----------------------------------

             Summary: JobScheduler skips the first dag run
                 Key: AIRFLOW-669
                 URL: https://issues.apache.org/jira/browse/AIRFLOW-669
             Project: Apache Airflow
          Issue Type: Bug
    Affects Versions: Airflow 1.8, Airflow 1.7.1.3
            Reporter: Eric Moritz


There appears to be a bug in Airflow's JobScheduler where it does not create the first scheduled dag run until the second scheduled dag run.

For instance for a DAG with the following properties:

{code:python}
dag = DAG(
            'test_scheduler_dagrun_skips_first',
            start_date=datetime.datetime(2016, 11, 1, 12),
            schedule_interval="00 * * * *"
)
{code}

When the current time is {{2016-11-01T12:01}} the expected behavior is that a dag run will be scheduled for {{2016-11-01T12:00}} however the {{JobSchedule.create_dag_run()}} method returns {{None}}

When the current time is {{2016-11-01T12:01}} the expected behavior is that a dag run will be scheduled for {{2016-11-01T13:00}} however the {{JobSchedule.create_dag_run()}} creates a DagRun model with the {{execution_date}} of {{2016-11-01T12:00}}.





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