Amazon EMR on EKS now supports job run concurrency controls

Amazon EMR on EKS now provides concurrency control for job runs on virtual clusters within EKS. Users can set maximum concurrent job runs and maximum queued job runs, preventing cluster overload in shared multi-tenant environments. When limits are reached, StartJobRun returns an exception, allowing traffic redirection to other clusters. Existing workloads are unaffected until explicitly enabled.

Why it matters

This update affects users running EMR workloads on shared multi-tenant EKS clusters