Root Cause
An Airflow task ran a database query without necessary filters, causing the system to become overloaded. This led to multiple attempts to execute the same heavy query simultaneously, which significantly impacted the database's performance and availability.
Resolution
The problematic queries were identified and stopped manually at the database level to alleviate the overload and restore normal operations.
Action Plan
Since this was a unique and isolated incident, no further actions are planned. The situation is considered unlikely to happen again.