Asynchronous API calls during scheduling

[macsko]

Enhancement Description

• One-line enhancement description (can be used as a release note): Make API calls during scheduling asynchronous.
• Kubernetes Enhancement Proposal: https://github.com/kubernetes/enhancements/blob/master/keps/sig-scheduling/5229-asynchronous-api-calls-during-scheduling/README.md
• Discussion Link: async API call for NominatedNodeName and pod condition kubernetes#129449, scheduler: output PreEnqueue failures to users kubernetes#130668
• Primary contact (assignee): @macsko
• Responsible SIGs: SIG Scheduling
• Enhancement target (which target equals to which milestone):
  • Alpha release target (x.y): N/A
  • Beta release target (x.y): 1.34
  • Stable release target (x.y):
• Beta
  • KEP (k/enhancements) update PR(s): KEP-5229: Asynchronous API calls during scheduling #5249
  • Code (k/k) update PR(s): [Umbrella] KEP-5229: Asynchronous API calls during scheduling kubernetes#132452
  • Docs (k/website) update PR(s): KEP-5229: Add SchedulerAsyncAPICalls feature gate docs website#51473

Please keep this description up to date. This will help the Enhancement Team to track the evolution of the enhancement efficiently.

[macsko]

/sig scheduling
/assign

[sanposhiho]

/label lead-opted-in
/milestone v1.34

[drewhagen]

Howdy @macsko 👋

A friendly reminder from the v1.34 Enhancements team:
the PRR Freeze is approaching on Thursday, June 12th, 2025.

To help ensure enough time for a smooth review by the PRR team and keep us all on track for the Enhancements Freeze (Friday, June 20th, 2025), please ensure that by the June 12th deadline, you have a PR open in k/enhancements which includes:

• The KEP's PRR questionnaire filled out.
• The kep.yaml updated with the stage, latest-milestone, and milestone struct.
• A PRR approval file with the PRR approver listed for the KEP's target stage.
• Completing these items by the deadline is key for the v1.34 release progression. You can find more details on the process in the Production Readiness documentation.

Your efforts on this KEP are making a real impact! 🚀
Thanks for your great contributions,
SIG Release v1.34 Enhancements Team