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KEP-3243: respect pod topology spread after rolling upgrades#3244

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denkensk:respect-pod-topology-spread-after-rolling-upgrades
Jun 8, 2022
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KEP-3243: respect pod topology spread after rolling upgrades#3244
k8s-ci-robot merged 5 commits intokubernetes:masterfrom
denkensk:respect-pod-topology-spread-after-rolling-upgrades

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@denkensk denkensk commented Mar 18, 2022 •
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Signed-off-by: Alex Wang wangqingcan1990@gmail.com

  • One-line PR description: adding new KEP

Discussion Link
kubernetes/kubernetes#98215
kubernetes/kubernetes#105661

  • Other comments:

@k8s-ci-robot k8s-ci-robot added cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. size/XL Denotes a PR that changes 500-999 lines, ignoring generated files. labels Mar 18, 2022
@k8s-ci-robot k8s-ci-robot requested a review from ahg-g March 18, 2022 09:04
@k8s-ci-robot k8s-ci-robot added the kind/kep Categorizes KEP tracking issues and PRs modifying the KEP directory label Mar 18, 2022
@k8s-ci-robot k8s-ci-robot added the sig/scheduling Categorizes an issue or PR as relevant to SIG Scheduling. label Mar 18, 2022
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denkensk commented Mar 18, 2022

/cc @ahg-g @Huang-Wei @alculquicondor

@k8s-ci-robot k8s-ci-robot requested a review from Huang-Wei March 18, 2022 09:05
@denkensk denkensk mentioned this pull request Mar 18, 2022
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@alculquicondor
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alculquicondor commented Mar 18, 2022

Thanks!
I will review after code freeze

@ahg-g
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ahg-g commented Mar 18, 2022

Can you link the discussion issue please.

/assign

@denkensk
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denkensk commented Mar 18, 2022

Can you link the discussion issue please.

Done. Added in the top.

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alculquicondor commented Mar 18, 2022

/unassign
Since I already reviewed the doc, one KEP reviewer should be enough.

ahg-g
ahg-g reviewed Apr 27, 2022
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Comment thread keps/sig-scheduling/3243-respect-pod-topology-spread-after-rolling-upgrades/README.md Outdated
Comment thread keps/sig-scheduling/3243-respect-pod-topology-spread-after-rolling-upgrades/README.md Outdated
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Comment thread keps/sig-scheduling/3243-respect-pod-topology-spread-after-rolling-upgrades/README.md Outdated
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Comment thread keps/sig-scheduling/3243-respect-pod-topology-spread-after-rolling-upgrades/README.md
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Comment thread keps/sig-scheduling/3243-respect-pod-topology-spread-after-rolling-upgrades/kep.yaml Outdated
Comment thread keps/sig-scheduling/3243-respect-pod-topology-spread-after-rolling-upgrades/kep.yaml Outdated
@denkensk denkensk force-pushed the respect-pod-topology-spread-after-rolling-upgrades branch from 3be0398 to cb1e11d Compare April 29, 2022 04:04
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denkensk commented Apr 29, 2022

@ahg-g
Thanks for your review. Updated. Pls review it again.

wojtek-t
wojtek-t reviewed Apr 29, 2022
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Comment thread keps/prod-readiness/sig-scheduling/3243.yaml Outdated
@wojtek-t wojtek-t self-assigned this Apr 29, 2022
ahg-g
ahg-g reviewed May 3, 2022
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denkensk commented May 6, 2022

@ahg-g
Thanks a lot.
Updated.
Pls review it again.

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ahg-g commented May 6, 2022

/lgtm

@wojtek-t this should be ready for PRR

@k8s-ci-robot k8s-ci-robot added the lgtm "Looks good to me", indicates that a PR is ready to be merged. label May 6, 2022
wojtek-t
wojtek-t reviewed Jun 7, 2022
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From PRR perspective it seems ok - I added two comments for tests.

I would also encourage you to fill in the scalability section of PRR now, but I'm not going to block on it.

Comment thread keps/sig-scheduling/3243-respect-pod-topology-spread-after-rolling-upgrades/README.md
persisted Pod object, otherwise it is silently dropped; moreover, kube-scheduler
will ignore the field and continue to behave as before.

### Test Plan
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Please adopt to the new test plan guidelines:

https://github.com/kubernetes/enhancements/tree/master/keps/NNNN-kep-template#test-plan

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@denkensk denkensk Jun 7, 2022

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Done

Comment thread keps/sig-scheduling/3243-respect-pod-topology-spread-after-rolling-upgrades/README.md
- Feature gate enable/disable tests
- `MatchLabelKeys` in `TopologySpreadConstraint` works as expected
- Benchmark tests:
- Verify no significant performance degradation
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In existing benchmarks? Or new ones?

I'm assuming existing don't exercise the newly added feature - are we ok with it?

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@denkensk denkensk Jun 7, 2022

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I plan to benchmark this using the exist cases in k8s.io/kubernetes/test/integration/scheduler_perf to verify if there's no significant performance degradation.

denkensk added 4 commits June 7, 2022 18:43
@denkensk
init kep for respecting pod topology spread after rolling upgrades
9490d2f 
Signed-off-by: Alex Wang <wangqingcan1990@gmail.com>
@denkensk
update
e5d98dd
@denkensk
add approver fo prod-readiness
2c4fc0b
@denkensk
update
46aa20c 
Signed-off-by: Alex Wang <wangqingcan1990@gmail.com>
@denkensk denkensk force-pushed the respect-pod-topology-spread-after-rolling-upgrades branch from 85c24e3 to ceee6ae Compare June 7, 2022 12:11
@k8s-ci-robot k8s-ci-robot removed the lgtm "Looks good to me", indicates that a PR is ready to be merged. label Jun 7, 2022
@denkensk denkensk force-pushed the respect-pod-topology-spread-after-rolling-upgrades branch from ceee6ae to 1b45339 Compare June 7, 2022 12:20
@denkensk denkensk requested a review from wojtek-t June 7, 2022 12:22
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wojtek-t commented Jun 8, 2022

/lgtm
/approve PRR

Thanks!

@k8s-ci-robot k8s-ci-robot added the lgtm "Looks good to me", indicates that a PR is ready to be merged. label Jun 8, 2022
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ahg-g commented Jun 8, 2022

/approve
/lgtm

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ahg-g commented Jun 8, 2022

/hold

@k8s-ci-robot k8s-ci-robot added the do-not-merge/hold Indicates that a PR should not merge because someone has issued a /hold command. label Jun 8, 2022
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k8s-ci-robot commented Jun 8, 2022

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ahg-g, denkensk, wojtek-t

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@k8s-ci-robot k8s-ci-robot added the approved Indicates a PR has been approved by an approver from all required OWNERS files. label Jun 8, 2022
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ahg-g commented Jun 8, 2022

/label tide/merge-method-squash

@k8s-ci-robot k8s-ci-robot added the tide/merge-method-squash Denotes a PR that should be squashed by tide when it merges. label Jun 8, 2022
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ahg-g commented Jun 8, 2022

/hold cancel

@k8s-ci-robot k8s-ci-robot removed the do-not-merge/hold Indicates that a PR should not merge because someone has issued a /hold command. label Jun 8, 2022
@k8s-ci-robot k8s-ci-robot merged commit 957af70 into kubernetes:master Jun 8, 2022
@k8s-ci-robot k8s-ci-robot added this to the v1.25 milestone Jun 8, 2022
@denkensk denkensk deleted the respect-pod-topology-spread-after-rolling-upgrades branch June 9, 2022 03:16
@palnabarun palnabarun mentioned this pull request Jun 12, 2022
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pacoxu added a commit to DaoCloud-OpenSource/docs that referenced this pull request Aug 23, 2022
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add PodTopologySpread: Scheduling KEP: kubernetes/enhancements#3244
cae858f
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@alculquicondor alculquicondor Awaiting requested review from alculquicondor

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approved Indicates a PR has been approved by an approver from all required OWNERS files. cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. kind/kep Categorizes KEP tracking issues and PRs modifying the KEP directory lgtm "Looks good to me", indicates that a PR is ready to be merged. sig/scheduling Categorizes an issue or PR as relevant to SIG Scheduling. size/XL Denotes a PR that changes 500-999 lines, ignoring generated files. tide/merge-method-squash Denotes a PR that should be squashed by tide when it merges.

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