Understanding Airflow Trigger Rules: A Comprehensive Visual Guide

In Apache Airflow, every task has a trigger rule assigned that determines when the task runs in relation to its upstream tasks. The default trigger rule is on_success, which runs a task only when all directly upstream tasks are successful. However, more complex DAG structures may require different trigger rules such as one_failed or none_skipped. This article provides an overview of all available Airflow trigger rules and their usage in various scenarios.

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