Apache Spark 4.0 represents a major milestone in stream processing, introducing new capabilities that fundamentally change how developers build stateful streaming applications. At the heart of these improvements is the transformWithState API – a new capability that enables first-class support for timers, automatic state management, and schema evolution to Spark Structured Streaming.
This is a companion discussion topic for the original entry at https://aws.amazon.com/blogs/big-data/build-stateful-streaming-applications-with-apache-spark-4-0-on-amazon-emr-serverless/