hard20 pts · first answer countsairfloworchestrationperformance

Sensors blocking every worker

Dozens of Airflow file sensors in poke mode wait for hours each morning, and other DAGs queue because no worker slots are free. What is the best fix?

A.Increase poke_interval to 1 secondB.Remove all retries from the DAGsC.Use deferrable sensors (or mode="reschedule") so waiting tasks release their slot, and set sensible timeoutsD.Set catchup=True on all DAGs

← Which day does an event belong to Take the hard mock interview →