ashb commented on a change in pull request #4898: [AIRFLOW-XXXX] how to setup simple test env with mysql URL: https://github.com/apache/airflow/pull/4898#discussion_r270928971
########## File path: docs/howto/setup-test-environment-mysql.rst ########## @@ -0,0 +1,43 @@ +.. Licensed to the Apache Software Foundation (ASF) under one + or more contributor license agreements. See the NOTICE file + distributed with this work for additional information + regarding copyright ownership. The ASF licenses this file + to you under the Apache License, Version 2.0 (the + "License"); you may not use this file except in compliance + with the License. You may obtain a copy of the License at + +.. http://www.apache.org/licenses/LICENSE-2.0 + +.. Unless required by applicable law or agreed to in writing, + software distributed under the License is distributed on an + "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + KIND, either express or implied. See the License for the + specific language governing permissions and limitations + under the License. + +Setup Test Environment using MySQL +================================== + +By default, Airflow uses SQLite as database backend +and ``SequentialExecutor`` to execute tasks as SQLite +does not support multiple connections. Since +``SequentialExecutor`` runs one instance at a time, +some parallel execution logic will not be exercised +in this default setup. + +To test out the parallel execution setup, we can use +MySQL as database backend and ``LocalExecutor`` as +the executor. Checkout the following setups to launch +a MySQL database container: + +.. code-block:: bash + + # Launch MySQL docker container + docker-compose -f scripts/ci/docker-compose.yml run -p3306:3306 mysql + + # Open airflow.cfg and add the following: + # sql_alchemy_conn = mysql://[email protected]:3306/airflow + # executor = LocalExecutor + vim $AIRFLOW_HOME/airflow.cfg + +airflow initdb Review comment: I think this line is meant to be indented. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
