kubernetes-sigs/kueue v0.19.0-rc.0 on GitHub

Changes since v0.18.0:

Actions Required Before Upgrading

(No, really, you MUST read this before you upgrade)

Minor releases: Review the .0 release notes for each new minor version you cross; see: v0.17.0, v0.18.0.
If you maintain an in-house integration you will need to modify the code
to pass the k8s context when calling the RestorePodSetsInfo function. (#13114, @ivnovakov)
KueuePopulator Helm: helm uninstall removes the ClusterQueue, ResourceFlavor, Topology, ConfigMap, and RBAC created by the chart, which previously leaked after uninstall.

If you installed a previous version of the kueue-populator chart, its ConfigMap and RBAC (*-kueue-hook-* ServiceAccount/ClusterRole/ClusterRoleBinding and the *-kueue-resources ConfigMap) were created as Helm hooks and are not adopted by the new release. Delete them manually before upgrading to avoid helm upgrade/install ownership conflicts. (#12402, @kevin85421)

MultiKueue: Fixed a security vulnerability in locationType=Path kubeconfig handling
that could allow users with MultiKueueCluster create or update access to make the
controller read arbitrary files. Kueue now validates path-based kubeconfigs to stay under
/etc/multikueue/kubeconfigs.

If you use locationType=Path, plan to move kubeconfig files under
/etc/multikueue/kubeconfigs, or switch to locationType=Secret or ClusterProfile.
This prepares your setup for future releases where MultiKueueKubeConfigPathValidation
is expected to be enabled by default. (#12223, @kannon92)

RayCluster: Fixed a bug where the Ray autoscaler sidecar container's resources were not counted against quota when in-tree autoscaling was enabled, causing the head PodSet to be under-counted. The head PodSet now includes the autoscaler sidecar (KubeRay's default 500m CPU / 512Mi memory, or spec.autoscalerOptions.resources when set).

users with autoscaling-enabled RayClusters may need to increase their ClusterQueue CPU quota by 500m and memory quota by 512Mi per head pod to avoid admission failures after upgrading. (#12405, @kevin85421)

RayJob: Fixed a bug where the Ray job submitter container's resources were not counted against quota when submissionMode: SidecarMode was used, causing the head PodSet to be under-counted. The head PodSet now includes the submitter sidecar (KubeRay's default 500m CPU / 200Mi memory).

After upgrading, RayJobs using submissionMode: SidecarMode reserve the submitter sidecar's resources (default 500m CPU / 200Mi memory) on the head. ClusterQueues sized without this headroom may fail to admit such RayJobs; increase the affected ClusterQueue's CPU/memory quota accordingly. (#12454, @kevin85421)

TAS: A negative subGroupCount on a Workload now produces an admission warning.

Starting with the 0.20 release, a negative subGroupCount will be rejected at the API level. (#13101, @reruno)

WaitForPodsReady is now enabled by default. New Kueue installations and existing installations that do not explicitly configure waitForPodsReady will use the default WaitForPodsReady configuration (30 minute timeout, 30 minute recovery timeout). (#11855, @amirialy)

Changes by Kind

Deprecation

DRA: Remove the deprecated DynamicResourceAllocation feature gate. Use KueueDRAIntegration instead. (#12258, @kshalot)
MultiKueue: Added accessProviders as the preferred ClusterProfile field for
configuring cluster access providers. The existing credentialsProviders field remains
supported but is deprecated and cannot be used together with accessProviders. (#12011, @kahirokunn)
TAS: node replacement is now triggered only when the workload's Pods on a NotReady node are terminating or terminated. The previous behavior of additionally marking a node as failed after it has been NotReady for a fixed 30s is deprecated and retained behind the TASReplaceNodeDueToNotReadyOverFixedTime feature gate (enabled by default in 0.17/0.18 backports, disabled by default and deprecated since 0.19, planned for removal). When that gate is disabled, TASReplaceNodeOnPodTermination has no effect. Nodes that are deleted or lack a Ready condition are still marked as failed immediately. (#13043, @yakticus)

API Change

Use SchemeGroupVersion instead of GroupVersion in the API.
If your code references the GroupVersion variable from the API, update it to use SchemeGroupVersion instead. (#12738, @mbobrovskyi)

Feature

Add curvePreferences support to TLSOptions (#11832, @kannon92)
Added kueue_local_queue_admission_fair_sharing_usage Prometheus metric to report AFS usage per LocalQueue, calculated from the resource-weighted sum of consumed resources and pending admission penalties, and divided by the LocalQueue's fair sharing weight. (#12326, @ShaanveerS)
Added a new metric multikueue_workloads_dispatched_total to count remote workloads successfully created by the MultiKueue manager per worker cluster. (#12782, @Mostafahassen1)
Added the TASSkipReassignmentForPodOwnedWorkloads feature gate (Alpha in 0.18, Beta/on-by-default in 0.19). When enabled, Kueue no longer recomputes the topology assignment of a Workload owned by a single Pod: on node failure the existing assignment is kept, and on eviction (e.g. preemption) the Workload is parked with Requeued=False instead of being re-admitted with a new assignment. Such Workloads cannot receive replacement pods, so a recomputed assignment can never be consumed and only makes the stored placement diverge from the node the pod actually runs on. Recovery happens through the owning controller's replacement pod, which arrives as a new Workload. (#12980, @yakticus)
ConcurrentAdmission: Fixed Variants not being created or deleted when a ClusterQueue's resource flavors change. (#12501, @ivnovakov)
ConcurrentAdmission: make sure there is at most one preemption variant issuing preemptions at any given time.
This is achieved using the "preemption gates" mechanism. (#11872, @reruno)
Custom Metric Labels (Alpha): Admitted Active Workloads metric support for Workload labels/annotations. (#13210, @Singularity23x0)
Custom metric labels update:
- Adds SourceKind and TrackedValues fields support.
- Adds Workload labels support.
- Enforces new custom label config validation.
  This is a breaking change for the custom metric labels alpha feature. (#12713, @Singularity23x0)
DRA Partitionable Devices: support multi-counter tracking by allowing the same DeviceClass in multiple deviceClassMappings with different counter sources. Add ResourceSliceCache for consolidated ResourceSlice listing. (#13018, @PannagaRao)
DRA: Adds capacity-based quota for DRA devices with multiple allocations. (#13152, @sohankunkerkar)
Graduate KueueDRAIntegrationExtendedResource to Beta (enabled by default) (#13102, @PannagaRao)
Graduate ManagedJobsNamespaceSelectorAlwaysRespected to GA (#13021, @PannagaRao)
Graduate the AdmissionGatedBy feature gate to Beta, enabled by default. Users who previously had to manually enable this gate no longer need to. Users who do not use the kueue.x-k8s.io/admission-gated-by annotation are unaffected. (#12110, @carterpewpew)
Helm: Added enableVisibilityAuthReaderRoleBinding Helm value (default: true) to make the visibility server's auth-reader RoleBinding in kube-system optional. Set to false when deploying under a GitOps project that cannot manage resources in kube-system, and create the RoleBinding out-of-band instead. (#12699, @amy)
Increase OOTB QPS and concurrency for Kueue: QPS: 300, Burst=500, Workload concurrency: 10, LQ and CQ: 5. (#12440, @yuluo-yx)
Increase the maximum number of PodSets per Workload from 10 to 18. (#12819, @mcochner)
KueueViz: Added a global rate limiter to the KueueViz backend to protect against distributed Denial of Service (DoS) attacks and TokenReview amplification. (#13173, @Vaishnav88sk)
MultiKueue: Added a new metric multikueue_workloads_admitted_total that counts remote workloads admitted by a worker cluster, labeled by cluster_queue, cluster, and replica_role. (#13050, @Mostafahassen1)
MultiKueue: Elastic RayCluster worker-group replica changes made on the management cluster (via the ElasticJobsViaWorkloadSlices feature gate) now propagate to the RayCluster on the admitting worker cluster. Previously the remote RayCluster was created once and never resized. (#12885, @jiaoew1991)
MultiKueue: Fixed a bug where admitted workloads could remain stuck instead of being evicted and retried after workerLostTimeout when reconnecting to a worker cluster failed after its connection configuration changed. (#13188, @kevin85421)
MultiKueue: The incremental dispatcher now nominates worker clusters in the order defined in MultiKueueConfig.spec.clusters instead of alphabetically, enabling priority-based spillover (for example, trying cheaper on-premises clusters before public-cloud clusters). (#13041, @andrewseif)
MultiKueue: provide stepSize configuration for the Incremental Dispatcher. (#11208, @Mostafahassen1)
Observability: Added kueue_unadmitted_workloads and kueue_local_queue_unadmitted_workloads metrics (gated by UnadmittedWorkloadsObservability) to track the count of unadmitted workloads by ClusterQueue/LocalQueue and the underlying blockage cause (e.g., WaitingForQuota, ChecksNotReady). (#12759, @j-skiba)
Observability: Added support for the UnadmittedWorkloadsObservability feature gate in the workload controller. When enabled, Kueue populates the QuotaReserved workload condition with granular reasons (such as Misconfigured, Suspended, or AdmissionGated) and detailed messages when a workload cannot be admitted, making it easier for operators to diagnose admission issues. (#12510, @j-skiba)
Observability: Added the kueue_pod_scheduling_gate_removal_seconds histogram metric to
measure the time from Workload admission to Pod scheduling-gate removal, helping operators
track delays before admitted Pods can be scheduled. (#12137, @mbobrovskyi)
Performance: Introduced TASCachingRemainingResources feature gate (enabled by default) to optimize Topology Aware Scheduling (TAS) preemption evaluation by caching per-leaf remaining capacities and reducing map allocations. (#13153, @j-skiba)
Promoted QuotaCheckStrategy to Beta and enabled by default. (#13075, @MaysaMacedo)
Scheduling: Added the UnadmittedWorkloadsExplicitStatus feature gate. When enabled, newly created workloads immediately receive explicit unadmitted status conditions (QuotaReserved=False and Admitted=False) during initial reconciliation to improve queue state observability. (#12719, @j-skiba)
Scheduling: Workloads bypassed by the scheduling equivalence cache now receive the granular failure reason (e.g., WaitingForQuota) and a bypass message in their QuotaReserved condition, improving visibility into why the workload was unadmitted. (#12821, @j-skiba)
TAS: Added the TASAssignmentsEncodingByHostnamePrefix feature gate (Beta, enabled by default). When enabled, Kueue uses hostname-prefix encoding for all hostname-level topology assignments, improving compaction for large assignments and supporting assignments that exceed the legacy single-slice limits.
The new encoding allows the use of TAS for workloads spanning more than 100k nodes for most clusters. You can find more detailed compaction statistics in the PR description. (#11579, @ShaanveerS)
TAS: graduate TASMultiLayerTopology to Beta (enabled by default). (#12290, @ekam-walia)
TAS: graduate TASMultiLayerTopology to Beta (enabled by default). (#12880, @ekam-walia)
Update unadmitted workload Kubernetes warning events to emit granular reasons (WaitingForQuota, NoMatchingFlavor, ExceedsMaxQuota, TopologyPlacementFailed, WaitingForPreemptedWorkloads, Misconfigured, Suspended, PendingEvaluation) when the UnadmittedWorkloadsObservability feature gate is enabled, matching the WorkloadQuotaReserved condition reason. (#13022, @j-skiba)
WaitForPodsReady: Introduce the DisableWaitForPodsReady feature gate to allow disabling WaitForPodsReady.
This is a temporary knob, and will be removed in a future release provided no feedback which requests a permanent
knob. (#13107, @amirialy)
When the UnadmittedWorkloadsObservability feature gate is enabled, workloads that fail to obtain a quota reservation now receive detailed diagnostic reasons in their QuotaReserved status condition (such as WaitingForQuota, ExceedsMaxQuota, TopologyPlacementFailed, or NoMatchingFlavor) along with an explicit Admitted: False condition. (#12452, @j-skiba)
Workload: When UnadmittedWorkloadsObservability is enabled, clearing workload quota reservation in the ConcurrentAdmission controller reports QuotaReserved: False with the PendingEvaluation reason instead of Pending. (#13020, @j-skiba)
Workload: When UnadmittedWorkloadsObservability is enabled, releasing quota reservation in JobFramework and StatefulSet controllers reports QuotaReserved: False with the PendingEvaluation reason instead of Pending. (#13019, @j-skiba)

Documentation

Docs: Added a version dropdown to the docs site navbar for switching between v0.16, v0.17, v0.18, and the current development version. (#13040, @baoalvin1)
Documentation: Add a deprecation note for the legacy Kubeflow Trainer v1. Users are notified that the integration
is deprecated and will be removed in a future release. (#12601, @mimowo)
Documentation: the Kueue webpage is redesigned and modernized. (#12412, @MichalZylinski)

Failing Test

ElasticJobsViaWorkloadSlices: Fixed a bug where an elastic job could permanently fail to start (FailedToStart) due to stale Kueue-owned annotations on the pod template, e.g. after its workload was deleted, or after eviction of a previously scaled-up job. (#12994, @mcochner)

Bug or Regression

AFS: Fixed ConsumedResources CPU truncating to zero when the sampling interval guard was bypassed by informer cache lag during initialization. (#12671, @sohankunkerkar)
AFS: Fixed a Denial of Service (DoS) vulnerability where deleting a LocalQueue could cause the Kueue scheduler to hang during AdmissionFairSharing calculations. (#13214, @Vaishnav88sk)
AFS: Fixed a race where a sampling tick running concurrently with workload settlement could persist a skewed ConsumedResources value in LocalQueue fair-sharing status. (#12939, @apullo777)
AFS: Fixed consumed-resources cache initialization and warm-start recovery so LocalQueue usage is not over-counted during cache seeding, and persisted historical usage is preserved after manager restarts when workload settlement runs before LocalQueue reconciliation. (#12891, @apullo777)
CLI: Fix --dry-run flag being silently ignored in kueuectl resume/stop localqueue and clusterqueue subcommands. (#12617, @carterpewpew)
ConfigAPI: Fixed TLS configuration validation to report all detected option errors instead of only the last one. (#12292, @kannon92)
ConfigAPI: TLS: Fixed a bug where invalid webhook server TLS settings could be silently ignored,
causing the webhook server to start with Go TLS defaults. Kueue now fails startup with a
clear configuration error, matching metrics server TLS validation behavior. (#12293, @kannon92)
Counter-based DRA logical resources are now displayed using binary units (for example 9984Mi) instead of raw byte integers in workload and ClusterQueue status. (#12989, @amarkdotdev)
DRA: Fix an integer overflow in device-count quota accounting where a ResourceClaimTemplate with very large device counts could be admitted over quota and leave a negative used-quota in the ClusterQueue status. (#12897, @thc1006)
DRA: Fix workloads retaining DRA-mapped resource names after their DeviceClass is deleted. (#11927, @sohankunkerkar)
DRA: Fixed a bug where pending Workloads using DRA extended resources were not requeued when their DeviceClass was deleted or its extendedResourceName changed. Kueue now re-evaluates affected Workloads so they do not remain in stale admission state. (#11929, @sohankunkerkar)
DRA: Fixed a bug where workloads with device constraints (matchAttribute) or device config were incorrectly rejected as unsupported instead of being admitted for quota. (#12451, @sohankunkerkar)
DRA: Fixed configuration validation to reject deviceClassMappings[].sources when the KueueDRAIntegrationPartitionableDevices feature gate is disabled, preventing unsupported partitionable-device configuration from being accepted. (#12134, @sohankunkerkar)
DRA: Fixed hot reconcile loops for inadmissible Workloads with deterministic DRA resolution
failures. Kueue now avoids requeueing permanent DRA spec or configuration errors while still
retrying transient failures with backoff. (#12002, @thc1006)
DRA: Fixed incorrect quota charging for invalid driver-published device counters by clamping them to the non-negative
int64 range before computing quota charges. (#12945, @thc1006)
DRA: fixed a potential int64 overflow in the counter-based device quota charge computation that could under-count quota when a driver publishes very large counter values. (#12909, @thc1006)
DRA: introduce a safeguard for invalid parameter combinations to prevent nil dereference crashes (#12889, @mykysha)
ElasticJobsViaWorkloadSlices: Fix the bug that regular (non-elastic) workloads with the required/preferred topology
were rejected when the feature ElasticJobsViaWorkloadSlicesWithTAS is enabled. (#11997, @yaroslava-serdiuk)
ElasticJobsViaWorkloadSlices: Fix workload slice misordering that could finish a correctly-admitted elastic workload slice when 3+ slices were created within the same second. (#12931, @sohankunkerkar)
ElasticJobsViaWorkloadSlices: Fixed a bug where scaling a Job below its accumulated succeeded count could permanently wedge the Workload reconciler and leak quota. (#12766, @Shreesha001)
ElasticJobsViaWorkloadSlices: Fixed a bug where scaling down an elastic Job left a stale reclaimablePods count on its Workload, causing Kueue to release more quota than it should for the removed pods. (#13044, @Shreesha001)
ElasticJobsViaWorkloadSlices: Fixed a bug where scaling down an elastic Job over-reserved quota for the removed pods until the Job finished. Reserved quota now tracks the pods still running, for indexed and non-indexed Jobs. (#13178, @Shreesha001)
ElasticJobsViaWorkloadSlices: Fixed a bug where worker pods of an elastic job could be ungated after scale up,
past the ClusterQueue quota; ungating is now capped to the replicas granted quota across the workload-slice chain. (#12045, @mcochner)
Fix a bug where on a reserved workload it is possible to change QueueName. (#12594, @kannon92)
Fixed LocalQueue status updates being rejected ("status.flavorsReservation: Too many: ... must have at most 16 items") when the referenced ClusterQueue has more than 16 flavors, by raising the LocalQueue status flavor limits to 64 to match the ClusterQueue limits. (#12082, @AsherWright)
Fixed a potential non-transitive ordering of the ClusterQueue queue and the visibility-server snapshot when a preempting (sticky) workload changed during a concurrent sort under BestEffortFIFO. (#12797, @somaz94)
Fixed elastic Jobs leaving replacement Pods gated when earlier Pods had already Succeeded or Failed. (#13126, @garg02)
Helm: Fix helm chart failing to install with a manager CrashLoopBackoff when cert-manager integration is enabled. (#12859, @meln5674)
Importer: Fixed LocalQueue namespace isolation to prevent information leakage between
namespaces when multiple LocalQueues with the same name exist in different namespaces. (#12309, @Singularity23x0)
Kueue-populator: Fixed events.k8s.io RBAC permissions for event recording. (#11975, @weizhoublue)
Kueue-populator: Fixed a bug where an error creating a LocalQueue was logged but not returned from Reconcile,
preventing controller-runtime from retrying. LocalQueue creation failures are now aggregated and returned so the request is requeued. (#12795, @NasitSony)
KueueViz: Fixed a Cross-Site WebSocket Hijacking (CSWSH) vulnerability in the KueueViz Backend by strictly validating WebSocket Origin headers to prevent unauthorized cross-origin data extraction. (#12734, @Vaishnav88sk)
KueueViz: Fixed a Denial of Service vulnerability where an oversized WebSocket frame could exhaust backend memory (OOM). Connections now enforce an 8 KiB read limit. (#12614, @ABHIGYAN-MOHANTA)
KueueViz: Fixed a bug where the dashboard briefly displayed zero counts for all metrics on page load before the WebSocket connection finished loading. (#11853, @YadavAkhileshh)
KueueViz: Fixed a layout-bleed bug where switching directly between detail pages briefly rendered stale queue data from the previously visited resource. (#11878, @YadavAkhileshh)
KueueViz: Fixed a security issue in kueueviz where WebSocket connections continued streaming cluster data after a bearer token expired or was revoked.
Connections are now closed within 30 seconds of token invalidation. (#12698, @Vaishnav88sk)
KueueViz: Fixed dashboard crash caused by missing optional chaining on flavor.resources (#12613, @ABHIGYAN-MOHANTA)
KueueViz: Improved workloads dashboard performance by avoiding repeated Pod list operations per Workload (#12777, @cryo-zd)
KueueViz: Prevent workload detail pages from crashing when Kubernetes Events have missing or invalid timestamps. (#13195, @YQ-Wang)
KueueViz: backend includes HTTP server timeouts (ReadHeaderTimeout, ReadTimeout, WriteTimeout, IdleTimeout) to prevent connection resource exhaustion. (#12590, @ABHIGYAN-MOHANTA)
KueueViz: frontend container image now runs as a non-root user (node) to adhere to the principle of least privilege. (#12586, @ABHIGYAN-MOHANTA)
LeaderWorkerSet: Fixed a bug where a LeaderWorkerSet with a negative or excessively large spec.replicas could crash the Kueue controller during reconciliation and MultiKueue workload processing. Kueue now rejects spec.replicas values that are negative or greater than 1000000 (#12715, @reruno)
MultiKueue: Creating a Job on the manager cluster deletes any pre-existing remote worker Job that happens to share the same NamespacedName. (#11877, @mszadkow)
MultiKueue: Fixed a bug that could leave stale status for Kubernetes Jobs in the manager
cluster when the worker-cluster Job reached steady state quickly and stopped getting
updates while the manager-cluster Job was still suspended. (#11867, @andrewseif)
MultiKueue: Fixed a bug where a remote could be marked connected too late, causing early workload events to be handled incorrectly (as if the remote was unreachable). (#12824, @Vaishnav88sk)
MultiKueue: Fixed a bug where a transient watch reconnect to a worker cluster could evict a running admitted workload. Kueue now measures the worker-lost grace from when the worker cluster's connection first dropped, rather than from the admission check's transition time, and retries immediately only when the reserving worker is reachable but its remote workload is gone. (#12999, @kevin85421)
MultiKueue: Fixed a bug where admitted Pod workloads could trigger unnecessary Cluster Autoscaler scale-ups
in the manager cluster. Kueue now preserves the scheduling-gated PodScheduled condition for manager-cluster
Pods, since they are intended to run only in worker clusters. (#12262, @fg91)
MultiKueue: Fixed a bug where obsolete remote Workloads could remain on temporarily unavailable worker clusters when the manager Workload lost its reservation or was deleted. Kueue now retries cleanup after worker clusters reconnect. (#11515, @vamsikrishna-siddu)
MultiKueue: Fixed a data race where reconnecting a remote cluster could swap the remote client while other goroutines were reading it, which could crash-loop the controller manager. (#12612, @apullo777)
MultiKueue: Fixed custom jobs using external-framework adapters being repeatedly created and deleted on worker clusters when source-cluster metadata was copied to the remote object. (#12643, @apullo777)
MultiKueue: Fixes an observability bug where Pods scheduled in a worker cluster could still appear unscheduled
in the manager cluster (as PodScheduled=False would be preserved). The PodScheduled condition is now
synchronized from the worker cluster, while preserving SchedulingGated for unschedulable Pods to avoid spurious
scale-ups. (#13136, @fg91)
MultiKueue: Stop considering spec.PreemptionGates when syncing workloads. The preemption gates on the manager and worker clusters are treated independently - they are not copied from the manager to the workers and differences between them are not considered as out-of-sync. This fixes an issue where creating a MultiKueue workload with a preemption gate would cause an infinite loop of sync and deletions on the worker clusters. (#12587, @kshalot)
MultiKueue: a remote Workload finishing with reason OutOfSync is no longer mirrored back as a terminal finish that silently strands the manager Job. The MultiKueue AdmissionCheck is reset to Retry so the workload is reg event explaining why. (#13047, @Smuger)
Navigating to an invalid cohort now displays a graceful error message instead of crashing the UI. (#13174, @Vaishnav88sk)
Observability: Fix ClusterQueue Borrowing Limit metric to display infinity if the limit is unset. (#11894, @mszadkow)
Observability: Fix verbose DRS logs failing to report DRS values due to JSON parsing error when handling fair sharing weight set to 0. (#13154, @kshalot)
Observability: Fixed LocalQueue gauge metrics not being reported after a LocalQueue starts matching the configured metrics selector. (#12894, @ikchifo)
Observability: Fixed a misleading kueue_cluster_queue_lending_limit metric value for ClusterQueues with unset lendingLimit. Kueue now reports +Inf, matching the actual unconstrained lending behavior instead of reporting 0. (#12143, @weizhoublue)
Observability: Fixed a race condition that could leave stale LocalQueue metrics after a label change caused the LocalQueue to stop matching the metrics selector. (#12283, @andrewseif)
Observability: add a safeguard check truncating the event messages to make sure the events can be successfully recorded in the API server. (#12028, @olekzabl)
PodGroup integration: Fixed a bug that allowed Workloads corresponding to PodGroups with the WaitingForReplacementPods=True condition to be re-admitted immediately. (#12768, @mbobrovskyi)
PriorityBooster: Fix a bug that events.k8s.io Events operation permission errors. (#11955, @dddwsd)
ProvisioningRequest: Fix a bug where ProvisioningRequest owned by finished or evicted Workloads are not cleaned up. The CleanupProvisioningRequestsOnEviction feature gate allows cleanup on eviction to be enabled by default. (#12522, @MatteoFari)
RayJob, RayCluster, RayService, JobSet, MPIJob, and Kubeflow Trainer jobs: Fixed a bug where changing a running job's pod set count, for example adding a worker group to a running RayCluster, could crash the Kueue controller during reconciliation. (#13025, @ivnovakov)
RayJob, RayCluster, and RayServe integrations: Fixed missing quota accounting for Redis cleanup resources when GCS fault tolerance is enabled. Kueue accounts for the Redis cleanup Job resources for workloads by folding the cleanup Job requests into the Ray head PodSet. (#11260, @nerdeveloper)
RayJob: Fix the integration controller dropping Kueue admission placement constraints (nodeSelector, tolerations, nodeAffinity) for the submitter pod when submitterPodTemplate is not explicitly set and submissionMode is K8sJobMode. (#12644, @carterpewpew)
RayService: Fixed a bug where deleting a Kueue-managed RayService with GCS fault tolerance enabled left KubeRay's Redis cleanup Job suspended forever, leaking the RayCluster's Redis metadata namespace. Kueue now defers finalizing the RayService's Workload until the cleanup Job completes. (#12778, @kevin85421)
ResourceTransformations: Fixed a bug where milli-valued quantities were rounded before
resource transformation multiplication. For example, multiplying 300m CPU by 1000
now correctly produces 300 instead of 3000. (#12953, @wafrelka)
Scheduling: Fixed a bug where a workload could be stuck pending when its node selector referenced a label key declared by a different flavor in the same resource group. (#12449, @carterpewpew)
Scheduling: Fixed resource accounting and validation for Pods using Kubernetes pod-level
resources (pod.spec.resources), including LimitRange defaulting and request/limit
validation. (#12334, @anuragdalvi)
Scheduling: Fixed stale scheduling queue entries for pending Workloads that transition
to WorkloadOnHold. (#12929, @anuragdalvi)
SparkApplication: Fixed a bug where the global spec.nodeSelector could overwrite driver or executor node selectors when they were admitted to different ResourceFlavors. (#12647, @carterpewpew)
StatefulSet: Fixed a bug where scaling a StatefulSet to zero caused its Workload to be incorrectly requeued for scheduling during the terminating-pod window, competing for quota it should no longer hold. (#12233, @gola)
TAS: Fix a bug where TAS ignores excluded or transformed resources in node capacity tracking. (#12006, @wafrelka)
TAS: Fix a performance bug where repeatedly checking the enablement of the TASRespectNodeAffinityPreferred feature gate inside a hot sorting loop could significantly increase the scheduling time (14% by the attached benchmark). (#13144, @j-skiba)
TAS: Fixed a bug that could cause workloads from ClusterQueues considered later in a scheduling cycle to remain pending for prolonged periods. This could happen because TAS assignments computed independently during nomination were likely to conflict on some topology domains. Kueue now re-evaluates TAS assignments during scheduling when needed. (#12419, @mimowo)
TAS: Fixed a bug that permanently leaked Topology-Aware Scheduling (TAS) resources if a workload was deleted while its ClusterQueue was temporarily missing a required Topology. (#12733, @Vaishnav88sk)
TAS: Fixed a bug where a PodSet slice size that did not evenly divide its count could make the topology ungater panic repeatedly, so the workload's Pods stayed stuck gated. The ungater no longer panics and ungates the Pods that fit the topology assignment. (#13223, @ivnovakov)
TAS: Fixed a bug where a PodSet with subGroupIndexLabel set but a missing or zero subGroupCount could crash the tas-ungater controller. Kueue now falls back to greedy domain assignment for these pods instead of panicking. (#12807, @reruno)
TAS: Fixed elastic workload placement to preserve leader pod set assignments and capacity accounting when worker counts stay the same or scale down. (#12436, @RooobinYe)
TAS: Fixed error handling for TAS topology assignments so Workloads are not considered
Fit when topology assignment fails. Kueue now treats such assignment errors as NoFit
instead of allowing the Workload to reserve quota. (#12055, @yaroslava-serdiuk)
TAS: domain selection is now deterministic when multiple domains tie on score; ties are broken by the domains' levelValues ordering. (#12052, @mvanhorn)
TAS: fixed excessive scheduling latency for workloads requiring preemption caused by repeatedly evaluating node selectors, tolerations, and affinity for each preemption simulation. The optimization is controlled by the beta TASCacheNodeMatchResults feature gate, enabled by default. (#13110, @j-skiba)
VisibilityOnDemand: Fixed a bug where a large or negative limit query parameter on the pending-workloads endpoints could crash the Kueue controller manager via memory exhaustion or a panic. The limit is now capped at 100000. (#13029, @reruno)
VisibilityOnDemand: Fixed a data race between the Visibility API pending-workloads endpoint and preemption requeuing that could crash the queue manager for BestEffortFIFO ClusterQueues. (#12736, @somaz94)
VisibilityOnDemand: Fixed forbidden list/watch errors caused by unused
MutatingAdmissionPolicy informers in the visibility server. (#11854, @kimminw00)
Workload slicing: prevent replacement when workloads do not share the namespace. (#13071, @mykysha)

Other (Cleanup or Flake)

ElasticJob: Added a defensive safeguard to avoid stale pending expectations in no-op pod ungate paths, following
the pattern from the TAS topology ungater. (#12652, @weizhoublue)
Fair Sharing: add a safeguard to prevent a potential infinite loop when DropQueue is called for a standalone ClusterQueue without also calling PopWorkload. (#13187, @aburan28)
Kubeflow training v1 will be deprecated in future releases. The default settings will not included training v1. (#12606, @kannon92)
KueueViz: Fixed WebSocket backend handlers to report errors while fetching dashboard data
instead of silently ignoring them. (#12310, @yuluo-yx)
KueueViz: frontend and backend deployments include securityContext defaults (runAsNonRoot, readOnlyRootFilesystem, drop ALL capabilities) and httpGet liveness/readiness probes. (#12513, @ABHIGYAN-MOHANTA)
MultiKueue: Renamed the admission-check controller's "reserving" terminology to "admitting" to match the underlying WorkloadAdmitted condition. The AdmissionCheckState messages and events now read "The workload was admitted on ", "Admitting remote lost", "Admitting remote no longer exists", and "Admitting remote temporarily unreachable" instead of their "reserving"/"got reservation on" wording. (#13124, @kevin85421)
MultiKueue: MultiKueueAllowInsecureKubeconfigs is now locked to disabled. Remove --feature-gates=MultiKueueAllowInsecureKubeconfigs=true and use kubeconfigs with certificate-authority-data instead. (#12366, @apullo777)
Observability: Introduced logging of unhealthy nodes on workload updates. (#13271, @dkaluza)
Reduced Kueue manager RBAC permissions for several Kueue configuration resources to avoid unnecessary spec write access. (#11791, @MatteoFari)
TAS Observability: Introduced logging of node replacements by NodeHotSwap. (#13215, @dkaluza)
TAS: Reduced the CPU and memory overhead of building the topology snapshot on large clusters by no longer cloning per-node usage maps on every scheduling cycle. (#12672, @akshay-pm)