Branching

This lesson explains how DAGs can incorporate branching logic within their workflows.

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As we write more complex workflows, a need arises to create branches within our workflows. Depending on the evaluation of some user-specified conditions, the workflow may execute a different set of tasks. Airflow provides operators to enable branching in workflows.

Branching

Consider the simple workflow below. We have task1 execute first, followed by task2, and, after that, the workflow branches and either executes task3 or task4. We can use the BranchPythonOperator to implement our desired workflow. Here is an illustration depicting the workflow:

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