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Recover informer relisting from ResourceVersionTooLarge errors - #4989

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kubernetes-prow[bot] merged 2 commits into
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copilot/fix-informer-reflector-runnable-recovery
Nov 7, 2026
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Recover informer relisting from ResourceVersionTooLarge errors#4989
kubernetes-prow[bot] merged 2 commits into
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copilot/fix-informer-reflector-runnable-recovery

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Copilot AI commented Nov 4, 2026 •
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A list returning HTTP 504 with a ResourceVersionTooLarge cause leaves the reflector repeatedly requesting the rejected version, potentially keeping the informer stale.

  • Recovery: Recognize the structured Kubernetes Status cause and mark the version unavailable. The next list uses resourceVersion "" for a consistent read, preserving existing HTTP 410 recovery.
  • Error handling: Continue reporting ordinary timeouts and absent or malformed response bodies through the existing exception handler.
  • Regression coverage: Exercise successful list/watch → rejected version → consistent relist → cache replacement → resumed watch at the recovered version.

@kubernetes-prow kubernetes-prow Bot added the do-not-merge/work-in-progress Indicates that a PR should not merge because it is a work in progress. label Nov 4, 2026
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CLA Signed
The committers listed above are authorized under a signed CLA.

@kubernetes-prow kubernetes-prow Bot added the cncf-cla: no Indicates the PR's author has not signed the CNCF CLA. label Nov 4, 2026
Copilot AI linked an issue Nov 4, 2026 that may be closed by this pull request
Informer ReflectorRunnable doesn't recover from "Too large resource version" #2190
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@kubernetes-prow kubernetes-prow Bot added the size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. label Nov 4, 2026
@kubernetes-prow kubernetes-prow Bot added do-not-merge/invalid-commit-message Indicates that a PR should not merge because it has an invalid commit message. size/L Denotes a PR that changes 100-499 lines, ignoring generated files. and removed size/XS Denotes a PR that changes 0-9 lines, ignoring generated files. labels Nov 4, 2026
Copilot AI changed the title [WIP] Fix informer ReflectorRunnable recovery from 'Too large resource version' Recover informer relisting from ResourceVersionTooLarge errors Nov 4, 2026
Copilot AI requested a review from brendandburns November 4, 2026 00:51
@brendandburns
brendandburns force-pushed the copilot/fix-informer-reflector-runnable-recovery branch from ef5dc03 to b5938fa Compare November 4, 2026 18:52
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@kubernetes-prow kubernetes-prow Bot added cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. and removed cncf-cla: no Indicates the PR's author has not signed the CNCF CLA. labels Nov 4, 2026
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brendandburns marked this pull request as ready for review November 5, 2026 17:58
@kubernetes-prow kubernetes-prow Bot removed the do-not-merge/work-in-progress Indicates that a PR should not merge because it is a work in progress. label Nov 5, 2026
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kubernetes-prow Bot requested a review from yue9944882 November 5, 2026 17:59
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brendandburns commented Nov 5, 2026

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/lgtm
/approve

@kubernetes-prow kubernetes-prow Bot added lgtm "Looks good to me", indicates that a PR is ready to be merged. approved Indicates a PR has been approved by an approver from all required OWNERS files. labels Nov 5, 2026
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brendandburns commented Nov 7, 2026

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/lgtm
/approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: brendandburns, Copilot

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@brendandburns brendandburns removed the do-not-merge/invalid-commit-message Indicates that a PR should not merge because it has an invalid commit message. label Nov 7, 2026
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kubernetes-prow Bot merged commit 6695996 into master Nov 7, 2026
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Informer ReflectorRunnable doesn't recover from "Too large resource version"

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