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High severityconfiguration

Apache Airflow Error:
AirflowClusterPolicyError

What does this error mean?

Raised for a Cluster Policy error other than Violation or SkipDag. This exception appears in Airflow task logs when the condition is triggered during DAG execution.

Common causes

  • 1A Cluster Policy raised an unexpected error while evaluating the DAG or task.
  • 2The policy function itself contains a bug or unhandled exception.

How to fix it

  1. 1Review the Cluster Policy function for bugs or unhandled exceptions.
  2. 2Check the Airflow scheduler logs for the full traceback of the policy error.

Frequently asked questions

Where does AirflowClusterPolicyError appear in Airflow?

In the task instance log, accessible via the Airflow UI under the failed task's Log tab, or in your log aggregation system.

Does this exception trigger a DAG retry?

Yes, if the task has retries configured. Each retry attempt creates a new task instance log entry.

Source · airflow.apache.org/docs/apache-airflow/stable/_api/airflow/exceptions/index.html

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