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Consolidating long-running, lightweight tasks for improved resource utilizationBy: Yingbo Wang, Kevin YangIntroductionAirflow is a platform to programmatically author, schedule, and monitor data pipelines. A typical Airflow cluster supports thousands of workflows, called DAGs (directed acyclic graphs), and there could be tens of thousands of concurrently running tasks at peak hours. Back in 2018, Airbnb’s Airflow cluster had several thousand DAGs and more than 30 thousand tasks running at the sa...