![]() The postgres deployment has been working as expected. Using the Apache Airflow Helm Chart 1.6.0 but we have upgraded the airflow version to 2.4.2.Īlso using self deployed postgres with pgbouncer enabled. Official Apache Airflow Helm Chart Deployment details In order to enable this feature, you must set the trigger property of your DAG to None. But it can also be executed only on demand. Operating Systemĭebian 11 bullseye Versions of Apache Airflow ProvidersĪpache-airflow-providers-cncf-kubernetes=4.4.0Īpache-airflow-providers-common-sql=1.2.0Īpache-airflow-providers-elasticsearch=4.2.1Īpache-airflow-providers-hashicorp=3.1.0Īpache-airflow-providers-microsoft-azure=4.3.0 Apache Airflow DAG can be triggered at regular interval, with a classical CRON expression. You will also be able to see that the example DAG has correctly been rerun at the specified execution_date (the started timestamp should be different). Note the Started timestamp of the example DAG run with RUN_ID=scheduled_T00:00:00+00:00Īfter this is done you should be able to see that the trigger task in trigger_exampe fails with the list index out of bounds exception (see stacktrace above). Trigger actions are often the result of external events think of a file being uploaded to a shared drive, a developer pushing his code to a repository or the existence of a partition in a Hive table, which could be a reason to start running your workflow.That function is called conditionallytrigger in your code and the examples. Enable the example DAG and let it catchup My understanding is that TriggerDagRunOperator is for when you want to use a python function to determine whether or not to trigger the SubDag. 1st DAG (exampletriggercontrollerdag) holds a TriggerDagRunOperator, which will trigger the 2nd DAG 2.To reproduce I used the following two DAGs example-dag.pyįrom _dagrun import 10, 25, tz="UTC"), But I still expect this not to fail since it's actually working. The DAG run should be cleared since a run at the specified execution_date exists, or if something else actually is wrong this should probably be logged better so the user understands what's wrong their DAG.Īfter some further testing I noticed that the DAG run is actually cleared and rerun at the specified execution_date, so the exception that occurs only causes the TriggerDagRunOperator task to fail. TriggerDagRunOperator def airflow dagrun eample questions Occasional. INFO - 0 downstream tasks scheduled from follow-on schedule check 2020 Apache Airflow version: 2.0.0rc2 Environment: Breeze with example dags. 2nd DAG (example_trigger_target_dag) which will be triggered by the TriggerDagRunOperator in the 1st DAG """ from _future_ import annotations import pendulum from airflow import DAG from _dagrun import TriggerDagRunOperator with DAG ( dag_id = "example_trigger_controller_dag", start_date = pendulum. The exam consists of 75 questions, and you have 60 minutes to write it. Using the TriggerDagRunOperator, as highlighted in trigger-dagrun-dag.py Using the ExternalTaskSensor, as highlighted in external-task-sensor-dag.py Using the Airflow API (for Airflow 2.0 or greater), as highlighted in api-dag. Apache Airflow is the leading orchestrator for authoring, scheduling, and monitoring data pipelines. 1st DAG (example_trigger_controller_dag) holds a TriggerDagRunOperator, which will trigger the 2nd DAG 2. Orest Tokovenko 27 December 2021 This study guide covers the Astronomer Certification DAG Authoring for Apache Airflow. """ Example usage of the TriggerDagRunOperator. See the License for the # specific language governing permissions and limitations # under the License. You may obtain a copy of the License at # 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. /docs/apache-airflow/2.0.1/api/airflow/operators/subdagoperator/index.html. 1st DAG (exampletriggercontrollerdag) holds a TriggerDagRunOperator, which will trigger the. 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. See the NOTICE file # distributed with this work for additional information # regarding copyright ownership. from /etc/os-release): Ubuntu What happened: When having a PythonOperator that returns xcom parameters to a TriggerDagRunOperator like in this non-working example: def conditionallytrig. # Licensed to the Apache Software Foundation (ASF) under one # or more contributor license agreements. Apache Airflow version:2.0.1 Environment: OS (e.g.
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