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Merge pull request #113718 from mimowo/handling-pod-failures-kubelet-nits

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Add comments to clarify the updated logic in kubelet's status_manager
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Kubernetes Prow Robot 2022-11-08 10:38:51 -08:00 committed by GitHub
commit c40d961324
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1 changed files with 8 additions and 4 deletions
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12
pkg/kubelet/status/status_manager.go
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@ -894,12 +894,16 @@ func mergePodStatus(oldPodStatus, newPodStatus v1.PodStatus, couldHaveRunningCon
if kubetypes.PodConditionByKubelet(c.Type) {
podConditions = append(podConditions, c)
} else if kubetypes.PodConditionSharedByKubelet(c.Type) {
// we replace or append all the "shared by kubelet" conditions
if c.Type == v1.AlphaNoCompatGuaranteeDisruptionTarget {
// update the pod disruption condition only if transitioning to terminal phase. In particular, check if
// there might still be running containers to avoid sending an unnecessary PATCH request if the
// actual transition is delayed (see below)
// guard the update of the DisruptionTarget condition with a check to ensure
// it will only be sent once all containers have terminated and the phase
// is terminal. This avoids sending an unnecessary patch request to add
// the condition if the actual status phase transition is delayed.
if transitioningToTerminalPhase && !couldHaveRunningContainers {
// update the LastTransitionTime
// update the LastTransitionTime again here because the older transition
// time set in updateStatusInternal is likely stale as sending of
// the condition was delayed until all pod's containers have terminated.
updateLastTransitionTime(&newPodStatus, &oldPodStatus, c.Type)
if _, c := podutil.GetPodConditionFromList(newPodStatus.Conditions, c.Type); c != nil {
// for shared conditions we update or append in podConditions