[jira] [Created] (AIRFLOW-3738) Rename start_date to valid_from

["Anatoli Babenia (JIRA)" <ji...@apache.org>]

Anatoli Babenia created AIRFLOW-3738:
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             Summary: Rename start_date to valid_from
                 Key: AIRFLOW-3738
                 URL: https://issues.apache.org/jira/browse/AIRFLOW-3738
             Project: Apache Airflow
          Issue Type: Improvement
          Components: api
    Affects Versions: 1.10.3
            Reporter: Anatoli Babenia


I could not understand why `start_date` is needed to add a task to a DAG.

[https://incubator-airflow.readthedocs.io/en/latest/faq.html#what-s-the-deal-with-start-date] fails to explain the purpose.

The only good explanation I found in [https://github.com/hgrif/airflow-tutorial] which explains it as the date, from which the workflow will be valid. There are still many questions. Does that mean that I won't be able to run my DAG explicitly before this date? How to run this DAG explicitly? What are all ways to run DAG that are affected by this date? Why it is attached to task and not to specific DAG? How DAG start date calculated if some tasks start date are defined in future? Will those later tasks be skipped when I run DAG earlier?

Many questions as you may see. For the start it would be more mindsetting to rename `start_date` to `valid_from`.



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