[jira] [Commented] (AIRFLOW-733) Deferred DAG assignment breaks with default_args

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AIRFLOW-733?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16983819#comment-16983819 ] 

ASF GitHub Bot commented on AIRFLOW-733:
----------------------------------------

stale[bot] commented on pull request #5598: [AIRFLOW-733][AIRFLOW-883] Apply default_args when setting `op.dag = dag` or `dag >> op`
URL: https://github.com/apache/airflow/pull/5598
 
 
   
 
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> Deferred DAG assignment breaks with default_args
> ------------------------------------------------
>
>                 Key: AIRFLOW-733
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-733
>             Project: Apache Airflow
>          Issue Type: Bug
>          Components: models
>            Reporter: George Sakkis
>            Assignee: Ash Berlin-Taylor
>            Priority: Minor
>
> Deferred DAG assignment raises {{AirflowException}} if the dag has {{default_args}} instead of {{start_date}}:
> {noformat}
> default_args = {'start_date': datetime(2016, 1, 1)}
> dag = DAG('my_dag2', default_args=default_args)
> deferred_op = DummyOperator(task_id='dummy')
> deferred_op.dag = dag
> ---------------------------------------------------------------------------
> AirflowException                          Traceback (most recent call last)
> <ipython-input-7-d9ff2f9c7283> in <module>()
> ----> 1 deferred_op.dag = dag
> ...
> AirflowException: Task is missing the start_date parameter
> {noformat}



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