Kueue v0.3.0

Changes since v0.2.1:

Features

• Support for kubeflow's MPIJob (v2beta1)
• Upgrade the config.kueue.x-k8s.io API version from v1alpha1 to v1beta1. v1alpha1 is no longer supported.
  v1beta1 includes the following changes:
  • Add namespace to propagate the namespace where kueue is deployed to the webhook certificate.
  • Add internalCertManagement with fields enable, webhookServiceName and webhookSecretName.
  • Remove enableInternalCertManagement. Use internalCertManagement.enable instead.
• Upgrade the kueue.x-k8s.io API version from v1alpha2 to v1beta1.
  v1alpha2 is no longer supported.
  v1beta1 includes the following changes:
  • ClusterQueue:
    • Immutability of spec.queueingStrategy.
    • Refactor quota.min and quota.max into nominalQuota and borrowingLimit.
    • Swap hieararchy between resources and flavors.
    • Group flavors and resources into spec.resourceGroups to make
      co-dependent resources explicit.
    • Move admission from spec to status.
    • Add conditions field to status.
  • LocalQueue:
    • Add admitted field in status.
    • Add conditions field to status.
  • Workload:
    • Add metadata to podSet templates.
    • Move admission into status.
  • ResourceFlavor:
    • Introduce spec to hold all fields.
    • Rename labels to nodeLabels.
    • Rename taints to nodeTaints.
• Reduce API calls by setting .status.admission and updating the Admitted condition in the same API call.
• Obtain queue names from label kueue.x-k8s.io/queue-name. The annotation with
  the same name is still supported, but it's now deprecated.
• Multiplatform support for linux/amd64 and linux/arm64.
• Validating webhook for batch/v1.Job validates kueue-specific labels and
  annotations.
• Sequential admission of jobs https://kueue.sigs.k8s.io/docs/tasks/setup_sequential_admission/
• Preemption within ClusterQueue and cohort https://kueue.sigs.k8s.io/docs/concepts/cluster_queue/#preemption
• Support for LimitRanges when calculating jobs usage.
• Library for integrating job-like CRDs (controller and webhooks) https://sigs.k8s.io/kueue/pkg/controller/jobframework

Production Readiness

• E2E tests for kubernetes 1.24, 1.25 1.26 on Kind
• Improve readability and code location in logging #14
• Optimized configuration for small size clusters with higher API QPS and number
  of workers.
• Reproducible load tests https://sigs.k8s.io/kueue/test/performance
• Documentation website https://kueue.sigs.k8s.io/docs/

Bug fixes

• Fix job controller ClusterRole for clusters that enable OwnerReferencesPermissionEnforcement admission control validation #392
• Fix race condition when admission attempt and requeuing happen at the same time #427
• Atomically release quota and requeue previously inadmissible workloads #512
• Fix support for leader election #580
• Fix support for RuntimeClass when calculating jobs usage #565

Acknowledgments

Thanks to our contributors in this release, in no particular order:
@tenzen-y @mcariatm @moficodes @mwielgus @trasc @mimowo @alculquicondor @fjding @kerthcet @ArangoGutierrez @Fish-pro @rbarberop @cortespao @rptaylor @kannon92 @noryev @oginskis @charlieyu1996 @kincl @ahg-g