Sail 0.3 adds Rust‑native Spark engine, slashing latency for Spark 4.0
Sail 0.3 replaces the Java Spark server with a Rust‑native implementation that speaks the Spark Connect protocol. It supports Spark 4.0 and 3.5, cuts object‑store latency, and ships a lightweight PySpark client, giving data teams faster, cheaper batch and streaming workloads without code changes.