[jira] [Created] (AIRFLOW-3726) Change the description and the default value for broker_url in airflow.cfg

["Kengo Seki (JIRA)" <ji...@apache.org>]

Kengo Seki created AIRFLOW-3726:
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             Summary: Change the description and the default value for broker_url in airflow.cfg
                 Key: AIRFLOW-3726
                 URL: https://issues.apache.org/jira/browse/AIRFLOW-3726
             Project: Apache Airflow
          Issue Type: Bug
          Components: configuration
            Reporter: Kengo Seki


Celery seems to have dropped SQLAlchemy support for its broker from 4.0.0 (introduced at Airflow 1.9.0).

http://docs.celeryproject.org/en/4.0/whatsnew-4.0.html#features-removed-for-lack-of-funding

But the default airflow.cfg can be read as it's still supported.

{code:title=airflow/config_templates/default_airflow.cfg}
# The Celery broker URL. Celery supports RabbitMQ, Redis and experimentally
# a sqlalchemy database. Refer to the Celery documentation for more
# information.
broker_url = sqla+mysql://airflow:airflow@localhost:3306/airflow
{code}



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