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https://issues.apache.org/jira/browse/YUNIKORN-1253?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17565284#comment-17565284
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Chen Yu Teng commented on YUNIKORN-1253:
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Update:
I tried WaitForFirstConsumer case with default scheduler and yunikorn.
This case with default scheduler is work, but yunikorn is not.

> PVCs won't get past WaitForFirstConsumer with Apache Yunikorn
> -------------------------------------------------------------
>
>                 Key: YUNIKORN-1253
>                 URL: https://issues.apache.org/jira/browse/YUNIKORN-1253
>             Project: Apache YuniKorn
>          Issue Type: Bug
>          Components: shim - kubernetes
>            Reporter: Alex Kalenyuk
>            Assignee: Chen Yu Teng
>            Priority: Major
>         Attachments: pv.yaml, storageclass.yaml
>
>
> It seems that with Apache Yunikorn, WaitForFirstConsumer volume binding 
> storage classes are not supported (not sure if this is intended or not).
> This makes it problematic to use storage that is not globally accessible from 
> all nodes:
> [https://kubernetes.io/docs/concepts/storage/storage-classes/#volume-binding-mode]
> To reproduce a simple failure to use a WaitForFirstConsumer binding-backed 
> PVC:
> ```
> kind: Pod
> apiVersion: v1
> metadata:
>   name: test
>   namespace: default
>   labels:
>     app: sleep
>     applicationId: "sleep0001-node-selector-test"
>     queue: "root.sandbox"
> spec:
>   schedulerName: yunikorn
>   nodeSelector:
>     storage/ssd: 'true'
>   containers:
>     - name: test
>       resources:
>         limits:
>           cpu: 1
>           memory: 1G
>         requests:
>           cpu: 1
>           memory: 1G
>       image: busybox
>       command:
>         - sleep
>         - '1000000'
>       volumeMounts:
>         - name: scratch-volume
>           mountPath: /data
>   volumes:
>     - name: scratch-volume
>       ephemeral:
>         volumeClaimTemplate:
>           spec:
>             accessModes:
>               - ReadWriteOnce
>             resources:
>               requests:
>                 storage: 1Gi
>             storageClassName: hostpath-provisioner
>             volumeMode: Filesystem
> ```
> Storage used:
> https://github.com/kubevirt/hostpath-provisioner-operator
> A similar issue was spotted in:
> [https://github.com/kubernetes/kubernetes/issues/86262]
> And this PR seems to introduce the VolumeBinding filter but comments it out:
> [https://github.com/apache/yunikorn-k8shim/pull/313]
>  
> I might be off with the "Bug" type here so feel free to correct me;
> My thinking was that if introducing support for WFFC is trivial, this may 
> make sense to exist in older versions too.



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