Hi Everyone, we encountered a very strange issue with airflow using AWS RDS as backend. We found that when the number of tasks is big enough (>60), airflow will fail with the error message (MySQL RDS backend)
sqlalchemy.exc.OperationalError: (MySQLdb._exceptions.OperationalError) (2005, "Unknown MySQL server host ... $AWS RDS address) or (Postgres RDS backend): psycopg2.OperationalError: could not translate host name $AWS RDS address When we restart airflow, it becomes fine; and the job scheduler & website are both running fine. However, it will fail again after a couple of days of smooth running, with the same error message. We found that on stack overflow, there are other ppl experiencing the same issue but no solution found. Anyone knows how to resolve the issue? Thanks, -- Ricky Shi
