Problemsby GlyphTrouble with Kubernetes scheduler
4 posts from 4 people4d activeSteady, +1 this week
Posts per day
The posts behind it
scheduler: DRA extended resource scoring uses stale device-match and node-match caches (never invalidated, wrong capacity until restart)
...`celCache`, which caches compiled CEL expressions rather than matching outcomes. ## How can we reproduce it (as minimally and precisely as possible)? ### Environment and prerequisites Reproduced on a single-node RKE2 v1.36.5 cluster using an **unmodified kube-scheduler binary**....
Scheduler counts a Pod's RuntimeClass overhead twice when the Pod-level status fields are set (InPlacePodLevelResourcesVerticalScaling, Beta and on by default since 1.36)
...you expect to happen? The overhead is counted once, as kubectl describe node does. ### How can we reproduce it (as minimally and precisely as possible)? Needs one node with InPlacePodLevelResourcesVerticalScaling on (the default since 1.36) and a RuntimeClass whose handler...
Delete preempted gang PodGroups and CompositePodGroups (DisruptionMode: All) during scheduler preemption
...pin the group to its previous topology placement or cause placement conflicts, making it difficult to move the workload to a new placement. - **Problematic lifecycle management for group-scoped resources (e.g., DRA)**: The scheduler or workload controllers may associate external...
[Scheduler] Redundant async preemption with already-deleted victim leaves preemptor stuck in unschedulable pool until 5-min flush
...must not depend on a specific cluster event that a no-op preemption never produces. ## How can we reproduce it (as minimally and precisely as possible)? Conditions required: SchedulerAsyncPreemption on (default); a high-priority pod P that needs preemption of a lower-priority...
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About this problem
Evidence
4 posts from 4 people in 1 place, about 1 a week over 75 days. Mostly on kubernetes/kubernetes.
Frustration Frustration 0 of 3· Seen on GitHub issues
How it was grouped
Posts about Kubernetes with no known issue, sharing the word "scheduler". First post Aug 31, 2026, latest Nov 13, 2026. Corroborated: 3 or more posts from 2 or more people or places. Method
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