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https://issues.apache.org/jira/browse/YUNIKORN-1953?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Manikandan R resolved YUNIKORN-1953.
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Resolution: Fixed
> Can't use Priority directly in placeholder pods
> -----------------------------------------------
>
> Key: YUNIKORN-1953
> URL: https://issues.apache.org/jira/browse/YUNIKORN-1953
> Project: Apache YuniKorn
> Issue Type: Bug
> Components: shim - kubernetes
> Affects Versions: 1.4.0
> Reporter: PoAn Yang
> Assignee: PoAn Yang
> Priority: Major
> Fix For: 1.4.0
>
>
> Placeholder pods can't be created in a job with non-zero value PriorityClass.
> I got following error in the yunikorn-k8shim:
>
> {noformat}
> 2023-09-02T07:11:57.330Z ERROR shim.cache.placeholder
> cache/placeholder_manager.go:99 failed to create placeholder pod
> {"error": "pods \"tg-group-low-app-low-0\" is forbidden: the integer value of
> priority (-100) must not be provided in pod spec; priority admission
> controller computed 0 from the given PriorityClass name"}{noformat}
> We set `priority` in placeholder pods [1]. However, if Priority Admission
> Controller is enabled, it prevents users from setting this field [2].
>
>
> [1]
> [https://github.com/apache/yunikorn-k8shim/blob/8b26c373b4b5ba1c1462cb779a3f467ee0ae6c1d/pkg/cache/placeholder.go#L124]
> [2]
> [https://github.com/kubernetes/kubernetes/blob/4619f7e9d9d64a0ae0b17270496ca3f7c67d24e8/staging/src/k8s.io/api/core/v1/types.go#L3469-L3475]
> Following is my test YAML:
> {code:java}
> apiVersion: scheduling.k8s.io/v1
> kind: PriorityClass
> metadata:
> name: yk-low
> preemptionPolicy: Never
> value: -100
> ---
> apiVersion: batch/v1
> kind: Job
> metadata:
> labels:
> applicationId: app-low
> name: app-low
> spec:
> backoffLimit: 6
> completionMode: NonIndexed
> completions: 1
> parallelism: 1
> suspend: false
> template:
> metadata:
> annotations:
> yunikorn.apache.org/task-group-name: group-low
> yunikorn.apache.org/task-groups:
> '[{"Name":"group-low","MinMember":1,"MinResource":{"cpu":"100m","memory":"100M"}}]'
> labels:
> applicationId: app-low
> job-name: app-low
> name: test-low-priority
> spec:
> containers:
> - command:
> - sleep
> - "300"
> image: alpine:latest
> imagePullPolicy: IfNotPresent
> name: sleepcontainer
> resources:
> requests:
> cpu: 100m
> memory: 100M
> terminationMessagePath: /dev/termination-log
> terminationMessagePolicy: File
> dnsPolicy: ClusterFirst
> priorityClassName: yk-low
> restartPolicy: Never
> schedulerName: yunikorn
> securityContext: {}
> terminationGracePeriodSeconds: 1 {code}
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