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Merge pull request #29077 from saad-ali/fixIssue29051NamespaceDeletion

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Automatic merge from submit-queue

Fix "PVC Volume not detached if pod deleted via namespace deletion" issue

Fixes #29051: "PVC Volume not detached if pod deleted via namespace deletion"

This PR:
* Fixes a bug in `desired_state_of_the_world_populator.go` to check the value of `exists` returned by the `podInformer` so that it can delete pods even if the delete event is missed (or fails).
* Reduces the desired state of the world populators sleep period from 5 min to 1 min (reducing the amount of time a volume would remain attached if a volume delete event is missed or fails).
This commit is contained in:
k8s-merge-robot 2016-07-20 20:40:32 -07:00 committed by GitHub
commit 99e24da2ff
2 changed files with 21 additions and 7 deletions
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2
pkg/controller/volume/attachdetach/attach_detach_controller.go
View File

@ -54,7 +54,7 @@ const (
// desiredStateOfWorldPopulatorLoopSleepPeriod is the amount of time the
// DesiredStateOfWorldPopulator loop waits between successive executions
desiredStateOfWorldPopulatorLoopSleepPeriod time.Duration = 5 * time.Minute
desiredStateOfWorldPopulatorLoopSleepPeriod time.Duration = 1 * time.Minute
)
// AttachDetachController defines the operations supported by this controller.

26
pkg/controller/volume/attachdetach/populator/desired_state_of_world_populator.go
View File

@ -82,12 +82,26 @@ func (dswp *desiredStateOfWorldPopulator) findAndRemoveDeletedPods() {
glog.Errorf("MetaNamespaceKeyFunc failed for pod %q (UID %q) with: %v", dswPodKey, dswPodUID, err)
continue
}
// retrieve the pod object from pod informer with the namespace key
informerPodObj, exists, err := dswp.podInformer.GetStore().GetByKey(dswPodKey)
if err != nil || informerPodObj == nil {
glog.Errorf("podInformer GetByKey failed for pod %q (UID %q) with %v", dswPodKey, dswPodUID, err)
// Retrieve the pod object from pod informer with the namespace key
informerPodObj, exists, err :=
dswp.podInformer.GetStore().GetByKey(dswPodKey)
if err != nil {
glog.Errorf(
"podInformer GetByKey failed for pod %q (UID %q) with %v",
dswPodKey,
dswPodUID,
err)
continue
}
if exists && informerPodObj == nil {
glog.Info(
"podInformer GetByKey found pod, but informerPodObj is nil for pod %q (UID %q)",
dswPodKey,
dswPodUID)
continue
}
if exists {
informerPod, ok := informerPodObj.(*api.Pod)
if !ok {
@ -95,7 +109,7 @@ func (dswp *desiredStateOfWorldPopulator) findAndRemoveDeletedPods() {
continue
}
informerPodUID := volumehelper.GetUniquePodName(informerPod)
// Check whether the unique idenfier of the pod from dsw matches the one retrived from pod informer
// Check whether the unique identifier of the pod from dsw matches the one retrieved from pod informer
if informerPodUID == dswPodUID {
glog.V(10).Infof(
"Verified pod %q (UID %q) from dsw exists in pod informer.", dswPodKey, dswPodUID)
@ -103,7 +117,7 @@ func (dswp *desiredStateOfWorldPopulator) findAndRemoveDeletedPods() {
}
}
// the pod from dsw does not exist in pod informer, or it does not match the unique idenfier retrieved
// the pod from dsw does not exist in pod informer, or it does not match the unique identifer retrieved
// from the informer, delete it from dsw
glog.V(1).Infof(
"Removing pod %q (UID %q) from dsw because it does not exist in pod informer.", dswPodKey, dswPodUID)