Apache Spark 3.1 Release: Spark on Kubernetes is now Generally Available With the Apache Spark 3.1 release in March 2021, the Spark on Kubernetes project is now officially declared as production-ready and Generally Available. This is the achievement of 3 years of booming community contribution and adoption of the project – since initial support for Spark-on-Kubernetes was added in Spark 2.3 (Febru