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https://issues.apache.org/jira/browse/AIRFLOW-3739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16865155#comment-16865155
]
ASF GitHub Bot commented on AIRFLOW-3739:
-----------------------------------------
BasPH commented on pull request #5423: [AIRFLOW-3739] Allow start_date required
argument on DAG
URL: https://github.com/apache/airflow/pull/5423
Make sure you have checked _all_ steps below.
### Jira
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### Description
- [x] Here are some details about my PR, including screenshots of any UI
changes:
@ashb provided information to AIRFLOW-3739 but in both cases, when setting
start_date=None and not providing start_date, Airflow will raise an
AirflowException "Task is missing the start_date parameter".
This PR removes that requirement, such that when you have a DAG which you'd
like to trigger only manually, you don't have to provide some random start_date
anymore.
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this extremely good reason:
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### Code Quality
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> Make start_date optional
> ------------------------
>
> Key: AIRFLOW-3739
> URL: https://issues.apache.org/jira/browse/AIRFLOW-3739
> Project: Apache Airflow
> Issue Type: Improvement
> Components: api
> Affects Versions: 1.10.3
> Reporter: Anatoli Babenia
> Priority: Major
>
> I want to define DAG, but not schedule it for running.
> ```
> from airflow import DAG
> from airflow.operators.bash_operator import BashOperator
> dag = DAG('115', schedule_interval="@daily")
> seed = BashOperator(
> task_id='get_seed',
> bash_command='date'
> )
> dag >> seed
> ```
> This fails with the error below.
> ```
> airflow.exceptions.AirflowException: Task is missing the start_date parameter
> zsh returned exit code 1
> ```
> It it possible to make `start_date` optional. If not, why?
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