What Spark 4.0 Brings: VARIANT Type, Native SQL UDFs, and Serverless Enhancements
Apache Spark 4.0 introduces a high‑performance VARIANT data type for semi‑structured JSON, native SQL UDFs that eliminate Python UDF bottlenecks, a richer Python DataSource API, a new pipeline syntax, upgraded Structured Streaming state management, and Alibaba Cloud EMR Serverless optimizations that together deliver up to 30% speed gains and seamless migration from Spark 3.x.
