Stabilizing ETL Pipelines With Airflow, Presto, and Metadata Contracts

Wednesday. 10:04 AM. The dashboard says conversions dropped 18%. Product’s panicking. Marketing’s quiet-slacking you. But nothing’s failed—Airflow’s green, Hive tables are updating, and your pipeline logs look squeaky clean. That’s when it hits you: this isn’t a failure. It’s something worse. It’s silent data drift.