[feature request] allow extended resources to be over-committed

[jasonliu747]

What would you like to be added:
According to this PR kubernetes/kubernetes#48922, extend resources could not be over-committed. Is it possible to overcommit batch-cpu and batch-memory in Koordinator?

Why is this needed:

[jasonliu747]

/area koordlet

[zwzhang0107]

A structured "protocol" is needed in annotation for multiple containers.

[jasonliu747]

/assign

[jasonliu747]

/assign @Mr-Linus

[zwzhang0107]

related kubernetes issue kubernetes/kubernetes#48922

[jasonliu747]

another related issue: kubernetes/kubernetes#110536

[zwzhang0107]

consider using kubernetes.io/koord-batch-cpu, kubernetes.io/koord-batch-memory as extended-resource for overcommitment.

[zwzhang0107]

• proposal of refactor extended resource with koordinator.kubernetes.io namespace
• koord-manager updates extended resource on node with new format PR1 / PR2
• koord-scheduler supports pod scheduling with old format exetened resource

[zwzhang0107]

/assign zwzhang0107

[zwzhang0107]

/area koord-manager
/area koord-scheduler

[zwzhang0107]

/close

[koordinator-bot]

@zwzhang0107: Closing this issue.

In response to this:

/close

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