KEP-5142keps/sig-scheduling/5142-pop-backoffq-when-activeq-empty

Pop pod from backoffQ when activeQ is empty

implementablebetasig-schedulinglatest v1.33

KEP on GitHub kep.yaml Ask about this KEP

This KEP proposes improving scheduling queue behavior by popping pods from the backoffQ when the activeQ is empty. This would allow to process potentially schedulable pods ASAP, eliminating a penalty effect of the backoff queue.

Facts

Authors: @macsko
Approvers: @alculquicondor
Reviewers: @dom4ha @sanposhiho
PRR approvers: @wojtek-tbeta
Tracking issue: #5142(opens GitHub in a new tab) opensig/schedulingstage/beta
Milestones: beta v1.33
Participating SIGs: none
Feature gates: SchedulerPopFromBackoffQ
Created / last updated: 2025-02-06 / none

Who decided each state, with the evidence.
Decided	Decision	Deciders	Evidence
2025-02-06 16:25 UTC	prr_approval wojtek-t gave the production readiness approval for KEP-5142 at alpha on 2025-02-06.	@wojtek-t prr_approver	Document 5142.yaml(opens GitHub in a new tab) Commit kubernetes/enhancements@58bc648f42955088389561f8c9192b473f56b808(opens GitHub in a new tab) PullRequest kubernetes/enhancements#5144 KEP-5142: Pop pod from backoffQ when activeQ is empty(opens GitHub in a new tab)
2025-02-12 09:02 UTC	prr_approval wojtek-t gave the production readiness approval for KEP-5142 at beta on 2025-02-12.	@wojtek-t prr_approver	Document 5142.yaml(opens GitHub in a new tab)
2025-02-12 14:38 UTC	stage_graduation KEP-5142 set milestone.alpha to v1.33 in PR #5144, approved by sanposhiho, alculquicondor; merged by automation (k8s-ci-robot) on 2025-02-12.	@alculquicondor approve_command @dom4ha lgtm @sanposhiho approver @sanposhiho lgtm @macsko author @wojtek-t lgtm @k8s-ci-robot merger	Commit kubernetes/enhancements@58bc648f42955088389561f8c9192b473f56b808(opens GitHub in a new tab) StatusChange milestone.alpha ∅ → v1.33 (2025-02-06)(opens GitHub in a new tab) PullRequest kubernetes/enhancements#5144 KEP-5142: Pop pod from backoffQ when activeQ is empty
2025-02-12 14:38 UTC	stage_graduation KEP-5142 set milestone.beta to v1.33 in PR #5144, approved by sanposhiho, alculquicondor; merged by automation (k8s-ci-robot) on 2025-02-12.	@alculquicondor approve_command @dom4ha lgtm @sanposhiho approver @sanposhiho lgtm @macsko author @wojtek-t lgtm @k8s-ci-robot merger	Commit kubernetes/enhancements@afc3295e5d342c3f8f9150d20f692a5c684a59d8(opens GitHub in a new tab) StatusChange milestone.beta ∅ → v1.33 (2025-02-11)(opens GitHub in a new tab) PullRequest kubernetes/enhancements#5144 KEP-5142: Pop pod from backoffQ when activeQ is empty
2025-02-12 14:38 UTC	stage_graduation KEP-5142 graduated to alpha in PR #5144, approved by sanposhiho, alculquicondor; merged by automation (k8s-ci-robot) on 2025-02-12.	@alculquicondor approve_command @dom4ha lgtm @sanposhiho approver @sanposhiho lgtm @macsko author @wojtek-t lgtm @k8s-ci-robot merger	Commit kubernetes/enhancements@58bc648f42955088389561f8c9192b473f56b808(opens GitHub in a new tab) StatusChange stage ∅ → alpha (2025-02-06)(opens GitHub in a new tab) PullRequest kubernetes/enhancements#5144 KEP-5142: Pop pod from backoffQ when activeQ is empty
2025-02-12 14:38 UTC	stage_graduation KEP-5142 graduated to beta from alpha in PR #5144, approved by sanposhiho, alculquicondor; merged by automation (k8s-ci-robot) on 2025-02-12.	@alculquicondor approve_command @dom4ha lgtm @sanposhiho approver @sanposhiho lgtm @macsko author @wojtek-t lgtm @k8s-ci-robot merger	Commit kubernetes/enhancements@afc3295e5d342c3f8f9150d20f692a5c684a59d8(opens GitHub in a new tab) StatusChange stage alpha → beta (2025-02-11)(opens GitHub in a new tab) PullRequest kubernetes/enhancements#5144 KEP-5142: Pop pod from backoffQ when activeQ is empty
2025-02-12 14:38 UTC	status_transition KEP-5142 status set to implementable in PR #5144, approved by sanposhiho, alculquicondor; merged by automation (k8s-ci-robot) on 2025-02-12.	@alculquicondor approve_command @dom4ha lgtm @sanposhiho approver @sanposhiho lgtm @macsko author @wojtek-t lgtm @k8s-ci-robot merger	Commit kubernetes/enhancements@58bc648f42955088389561f8c9192b473f56b808(opens GitHub in a new tab) StatusChange status ∅ → implementable (2025-02-06)(opens GitHub in a new tab) PullRequest kubernetes/enhancements#5144 KEP-5142: Pop pod from backoffQ when activeQ is empty

Metadata, label and milestone changes, oldest first.Showing 1–10 of 34Rows

Status history
At	Kind	Field	Change	Actor	Evidence
2025-02-06 16:22 UTC	label	sig/scheduling added	none → sig/scheduling	@k8s-ci-robot	source(opens GitHub in a new tab)
2025-02-06 16:25 UTC	metadata	authors set	none → ["macsko"]	none

Relationships as stored, Person → KEP, from kep.yaml(opens GitHub in a new tab)
Person	Relationship
@macsko GitHub(opens GitHub in a new tab)	—AUTHORED→
@dom4ha GitHub(opens GitHub in a new tab)	—REVIEWS→
@sanposhiho GitHub(opens GitHub in a new tab)	—REVIEWS→
@alculquicondor

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Pop pod from backoffQ when activeQ is empty

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