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Merge pull request #47000 from caesarxuchao/fix-gc-orphan

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Automatic merge from submit-queue (batch tested with PRs 47000, 47188, 47094, 47323, 47124)

GC should retry on patch error

Fixing https://github.com/kubernetes/kubernetes/issues/46998.

This is fixing a bug, so applying the 1.7 milestone.
This commit is contained in:
Kubernetes Submit Queue 2017-06-12 18:19:40 -07:00 committed by GitHub
commit 3b05e19076
2 changed files with 36 additions and 3 deletions
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5
pkg/controller/garbagecollector/garbagecollector.go
View File

@ -399,7 +399,6 @@ func (gc *GarbageCollector) processDeletingDependentsItem(item *node) error {
// dependents are copies of pointers to the owner's dependents, they don't need to be locked.
func (gc *GarbageCollector) orphanDependents(owner objectReference, dependents []*node) error {
var failedDependents []objectReference
var errorsSlice []error
for _, dependent := range dependents {
// the dependent.identity.UID is used as precondition
@ -408,10 +407,10 @@ func (gc *GarbageCollector) orphanDependents(owner objectReference, dependents [
// note that if the target ownerReference doesn't exist in the
// dependent, strategic merge patch will NOT return an error.
if err != nil && !errors.IsNotFound(err) {
errorsSlice = append(errorsSlice, fmt.Errorf("orphaning %s failed with %v", dependent.identity, err))
errorsSlice = append(errorsSlice, fmt.Errorf("orphaning %s failed, %v", dependent.identity, err))
}
}
if len(failedDependents) != 0 {
if len(errorsSlice) != 0 {
return fmt.Errorf("failed to orphan dependents of owner %s, got errors: %s", owner, utilerrors.NewAggregate(errorsSlice).Error())
}
glog.V(5).Infof("successfully updated all dependents of owner %s", owner)

34
pkg/controller/garbagecollector/garbagecollector_test.go
View File

@ -586,3 +586,37 @@ func TestUnblockOwnerReference(t *testing.T) {
}
}
}
func TestOrphanDependentsFailure(t *testing.T) {
testHandler := &fakeActionHandler{
response: map[string]FakeResponse{
"PATCH" + "/api/v1/namespaces/ns1/pods/pod": {
409,
[]byte{},
},
},
}
srv, clientConfig := testServerAndClientConfig(testHandler.ServeHTTP)
defer srv.Close()
gc := setupGC(t, clientConfig)
defer close(gc.stop)
dependents := []*node{
{
identity: objectReference{
OwnerReference: metav1.OwnerReference{
Kind: "Pod",
APIVersion: "v1",
Name: "pod",
},
Namespace: "ns1",
},
},
}
err := gc.orphanDependents(objectReference{}, dependents)
expected := `the server reported a conflict (patch pods pod)`
if err == nil || !strings.Contains(err.Error(), expected) {
t.Errorf("expected error contains text %s, got %v", expected, err)
}
}