Amazon EMR Serverless extended support to allow changes in maximum capacity and custom image settings without stopping or restarting applications. New workloads submitted after a configuration update adopt the new settings, while existing workloads continue uninterrupted.
Previously, such updates required application downtime, complicating maintenance and job submission scheduling. This enhancement reduces operational overhead and increases responsiveness to workload demand changes or image updates. The feature is available on all EMR releases and supported AWS regions.
Source & further reading
Amazon EMR Serverless now supports live configuration updates without application restarts ↗Source published 2026-06-24. This report was prepared with AI assistance from the linked primary-source material. Claims and limitations should be checked against the original announcement or research.