kaxil commented on a change in pull request #6633: [AIRFLOW-2279] Clear tasks across DAGs if marked by ExternalTaskMarker URL: https://github.com/apache/airflow/pull/6633#discussion_r364042758
########## File path: airflow/example_dags/example_external_task_marker.py ########## @@ -0,0 +1,54 @@ +# -*- coding: utf-8 -*- +# +# 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. + +""" +Example DAG demonstrating setting up inter-DAG dependencies using ExternalTaskSensor and +ExternalTaskMarker + +In this example, child_task1 in example_external_task_marker_child depends on parent_task in +example_external_task_marker_parent. When parent_task is cleared with "Recursive" selected, +the presence of ExternalTaskMarker tells Airflow to clear child_task1 and its +downstream tasks. +""" + +import pendulum + +from airflow.models import DAG +from airflow.operators.dummy_operator import DummyOperator +from airflow.sensors.external_task_sensor import ExternalTaskMarker, ExternalTaskSensor + +start_date = pendulum.parse("20150101") Review comment: let's use the time object instead of parsing it from string ---------------------------------------------------------------- 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
