Delay preemptions for two-phase admission

[mimowo]

What would you like to be added:

An ability to delay preemptions in case of 2-phase admission.

Why is this needed:

Currently preemptions happen when reserving the quota, before additional admission checks. However, some admission checks may take a long time, and maybe over this time the workloads would complete on their own.

Completion requirements:

This enhancement requires the following artifacts:

• Design doc
• API change
• Docs update

The artifacts should be linked in subsequent comments.

[mimowo]

cc @mwielgus @mwysokin @tenzen-y

[Horiodino]

/assign
Hi @mimowo, could you please provide more context about this? I'm not very familiar with the codebase.

[mimowo]

Hi @Horiodino, it is nice to see you are looking for contributions to the project, however, it is hard to indicate a specific place in code at this point. This is actually a complex task and will require some design as a KEP and very likely some API changes to control the behavior. So, I would not recommend it as a "warm up" task.

[Horiodino]

/unassign