Airflow
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Airflow XCom Explained: Push, Pull, Default Keys and Practical Examples
The default key for Airflow xcom_pull() is return_value. How push and pull work with PythonOperator, custom keys and TaskFlow, and why xcom_pull() can return None.
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How to Fix Airflow InvalidToken Errors: Fernet Key Troubleshooting
Airflow raises InvalidToken when it can’t decrypt a stored connection password or Variable. How to find which Fernet key is in play, recover it and rotate keys without losing metadata.
