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feat: add field selector for node store ListWatch if node argument given #2330

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feat: add field selector for node store ListWatch if node argument given #2330

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gqcn
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@gqcn gqcn commented Feb 28, 2024

What this PR does / why we need it:

If node argument given, it can list and watch node resource using specified node name, instead of full amount of nodes from api-server, which could cause big cpu pressure for api-server if nodes are in big amount.

How does this change affect the cardinality of KSM: (increases, decreases or does not change cardinality)

does not change cardinality.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

no issue associated

@k8s-ci-robot k8s-ci-robot added needs-triage Indicates an issue or PR lacks a `triage/foo` label and requires one. cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. size/S Denotes a PR that changes 10-29 lines, ignoring generated files. labels Feb 28, 2024
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gqcn commented Mar 4, 2024

@logicalhan @mrueg Hi, would you please have a code review for this?

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dashpole commented Mar 7, 2024

/assign @CatherineF-dev
/triage accepted

@k8s-ci-robot k8s-ci-robot added triage/accepted Indicates an issue or PR is ready to be actively worked on. and removed needs-triage Indicates an issue or PR lacks a `triage/foo` label and requires one. labels Mar 7, 2024
CatherineF-dev
CatherineF-dev reviewed Mar 8, 2024
View reviewed changes
internal/store/node.go
@@ -520,12 +522,27 @@ func wrapNodeFunc(f func(*v1.Node) *metric.Family) func(interface{}) *metric.Fam
}
}

func createNodeListWatch(kubeClient clientset.Interface, _ string, _ string) cache.ListerWatcher {
func createNodeListWatch(kubeClient clientset.Interface, _ string, fieldSelector string) cache.ListerWatcher {
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nit: add unit tests

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/lgtm

@k8s-ci-robot k8s-ci-robot added the lgtm "Looks good to me", indicates that a PR is ready to be merged. label Mar 8, 2024
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[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: CatherineF-dev, gqcn
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New changes are detected. LGTM label has been removed.

@k8s-ci-robot k8s-ci-robot added size/M Denotes a PR that changes 30-99 lines, ignoring generated files. and removed lgtm "Looks good to me", indicates that a PR is ready to be merged. size/S Denotes a PR that changes 10-29 lines, ignoring generated files. labels Apr 22, 2024
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@k8s-ci-robot k8s-ci-robot added lifecycle/stale Denotes an issue or PR has remained open with no activity and has become stale. needs-rebase Indicates a PR cannot be merged because it has merge conflicts with HEAD. labels Jul 21, 2024
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PR needs rebase.

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/close

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@k8s-triage-robot: Closed this PR.

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@CatherineF-dev CatherineF-dev CatherineF-dev left review comments

@logicalhan logicalhan Awaiting requested review from logicalhan

@mrueg mrueg Awaiting requested review from mrueg

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