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Revert v1beta1 PodDisruptionBudget selector patchStrategy to pre-1.21 behavior #108138

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merged 2 commits into from
Feb 16, 2022
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Revert v1beta1 PodDisruptionBudget selector patchStrategy to pre-1.21 behavior #108138

merged 2 commits into from
Feb 16, 2022

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@liggitt liggitt commented Feb 15, 2022 •
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What type of PR is this?

/kind bug
/kind regression

What this PR does / why we need it:

Reverts strategic merge patch behavior for the selector field in v1beta1 PodDisruptionBudget objects to match pre-1.21 behavior.

Which issue(s) this PR fixes:

Fixes #108137

Does this PR introduce a user-facing change?

Fixes a regression in 1.21 in v1beta1 PodDisruptionBudget handling of "strategic merge patch"-type API requests for the `selector` field. Prior to 1.21, these requests would merge `matchLabels` content and replace `matchExpressions` content. In 1.21, patch requests touching the `selector` field started replacing the entire selector. This is consistent with server-side apply and the v1 PodDisruptionBudget behavior, but should not have been changed for v1beta1.

/cc @mortent
/cc @jpbetz

@k8s-ci-robot k8s-ci-robot added release-note Denotes a PR that will be considered when it comes time to generate release notes. kind/bug Categorizes issue or PR as related to a bug. size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. kind/regression Categorizes issue or PR as related to a regression from a prior release. cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. do-not-merge/needs-sig Indicates an issue or PR lacks a `sig/foo` label and requires one. labels Feb 15, 2022
@liggitt liggitt changed the title Revert v1beta1 PodDisruptionBudget select patchStrategy Revert v1beta1 PodDisruptionBudget selector patchStrategy Feb 15, 2022
@k8s-ci-robot k8s-ci-robot added the needs-triage Indicates an issue or PR lacks a `triage/foo` label and requires one. label Feb 15, 2022
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@liggitt: This issue is currently awaiting triage.

If a SIG or subproject determines this is a relevant issue, they will accept it by applying the triage/accepted label and provide further guidance.

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@k8s-ci-robot k8s-ci-robot added needs-priority Indicates a PR lacks a `priority/foo` label and requires one. kind/api-change Categorizes issue or PR as related to adding, removing, or otherwise changing an API sig/apps Categorizes an issue or PR as relevant to SIG Apps. approved Indicates a PR has been approved by an approver from all required OWNERS files. sig/auth Categorizes an issue or PR as relevant to SIG Auth. and removed do-not-merge/needs-sig Indicates an issue or PR lacks a `sig/foo` label and requires one. labels Feb 15, 2022
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2rs2ts approved these changes Feb 15, 2022
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Thank you for the quick turnaround on this!

@k8s-ci-robot k8s-ci-robot added size/L Denotes a PR that changes 100-499 lines, ignoring generated files. area/test and removed size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. labels Feb 15, 2022
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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: 2rs2ts, liggitt

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@k8s-ci-robot k8s-ci-robot added the sig/testing Categorizes an issue or PR as relevant to SIG Testing. label Feb 15, 2022
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liggitt commented Feb 15, 2022 •
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added an integration test exercising all strategic merge patch, merge patch, and apply patch types against v1 and v1beta1. Verified the test passes against this PR, passes against release-1.20 (with the v1 cases skipped, since the v1 API didn't exist then), and fails against release-1.21, release-1.22, release-1.23, and master.

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liggitt commented Feb 15, 2022

/retest

@liggitt liggitt changed the title Revert v1beta1 PodDisruptionBudget selector patchStrategy Revert v1beta1 PodDisruptionBudget selector patchStrategy to pre-1.21 behavior Feb 15, 2022
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This PR may require API review.

If so, when the changes are ready, complete the pre-review checklist and request an API review.

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@liggitt liggitt mentioned this pull request Feb 15, 2022
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jpbetz commented Feb 15, 2022

/lgtm

Huge thanks for fixing.

@k8s-ci-robot k8s-ci-robot added the lgtm "Looks good to me", indicates that a PR is ready to be merged. label Feb 15, 2022
@k8s-ci-robot k8s-ci-robot merged commit a37b6fc into kubernetes:master Feb 16, 2022
@k8s-ci-robot k8s-ci-robot added this to the v1.24 milestone Feb 16, 2022
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2rs2ts commented Feb 17, 2022

Will this be backported to 1.21-23?

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liggitt commented Feb 17, 2022

yes, cherry-picks already open and linked

k8s-ci-robot added a commit that referenced this pull request Feb 22, 2022
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Merge pull request #108142 from liggitt/automated-cherry-pick-of-#108…
35758a4 
…138-upstream-release-1.21

Automated cherry pick of #108138: Revert v1beta1 PodDisruptionBudget select patchStrategy
k8s-ci-robot added a commit that referenced this pull request Feb 22, 2022
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Merge pull request #108141 from liggitt/automated-cherry-pick-of-#108…
4594898 
…138-upstream-release-1.22

Automated cherry pick of #108138: Revert v1beta1 PodDisruptionBudget select patchStrategy
k8s-ci-robot added a commit that referenced this pull request Feb 22, 2022
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Merge pull request #108139 from liggitt/automated-cherry-pick-of-#108…
9a19f6a 
…138-upstream-release-1.23

Automated cherry pick of #108138: Revert v1beta1 PodDisruptionBudget select patchStrategy
@liggitt liggitt deleted the v1beta1-selector branch May 5, 2022 15:00
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@2rs2ts 2rs2ts 2rs2ts approved these changes

@jpbetz jpbetz Awaiting requested review from jpbetz

@mortent mortent Awaiting requested review from mortent

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policy/v1beta1 PodDisruptionBudget selector patchStrategy changed unexpectedly in 1.21 upgrade
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