Amazon EMR on EKS Adds Job Run Concurrency Controls
Amazon EMR on EKS now includes job run admission control, allowing users to set concurrency limits on virtual clusters. This feature helps prevent shared EKS clusters from becoming overloaded in multi-tenant environments by controlling the number of jobs running concurrently and queue depth. It ensures critical workloads maintain predictability and avoid scheduling failures, even under heavy demand. Users can configure optional `maxConcurrentJobRuns` and `maxInQueueJobRuns` limits, with `ValidationException` signals for queue overflow when the queue is full.
Features (1) ›
- Introduce Job Run Concurrency Controls for EMR on EKS
Amazon EMR on EKS now supports job run admission control, allowing users to set limits on concurrent job runs and queue depth (`maxConcurrentJobRuns`, `maxInQueueJobRuns`) for virtual clusters. This helps prevent resource contention and ensures predictable workload execution on shared EKS clusters. An HTTP ValidationException is returned when the queue is full.
https://aws.amazon.com/about-aws/whats-new/2026/08/amazon-emr-eks/
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