mirror of
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Merge pull request #59828 from krousey/shared_informer_race
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. Fix a race condition in SharedInformer **What this PR does / why we need it**: This fixes a race condition that can occur in the `sharedIndexInformer` **Which issue(s) this PR fixes**: Fixes #59822 **Release note**: ```release-note Fixed a race condition in k8s.io/client-go/tools/cache.SharedInformer that could violate the sequential delivery guarantee and cause panics on shutdown. ``` Kubernetes-commit: 6590ea6d5d50700d34255b1e037b2702ad26b7fc
This commit is contained in:
Kubernetes Publisher
commit
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@ -284,331 +284,331 @@
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|
||||
"ImportPath": "k8s.io/apimachinery/pkg/util/errors",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/apimachinery/pkg/util/framer",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/apimachinery/pkg/util/httpstream",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/apimachinery/pkg/util/httpstream/spdy",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/apimachinery/pkg/util/intstr",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/apimachinery/pkg/util/json",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/apimachinery/pkg/util/mergepatch",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/apimachinery/pkg/util/net",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/apimachinery/pkg/util/remotecommand",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/apimachinery/pkg/util/runtime",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/apimachinery/pkg/util/sets",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/apimachinery/pkg/util/strategicpatch",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/apimachinery/pkg/util/validation",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/apimachinery/pkg/util/validation/field",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/apimachinery/pkg/util/wait",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/apimachinery/pkg/util/yaml",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/apimachinery/pkg/version",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/apimachinery/pkg/watch",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/apimachinery/third_party/forked/golang/json",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/apimachinery/third_party/forked/golang/netutil",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/apimachinery/third_party/forked/golang/reflect",
|
||||
"Rev": "616b23029fa3dc3e0ccefd47963f5651a6543d94"
|
||||
"Rev": "da3b134bab57ebf23dedfec7e0004614dd4b5a24"
|
||||
},
|
||||
{
|
||||
"ImportPath": "k8s.io/kube-openapi/pkg/util/proto",
|
||||
|
||||
17
tools/cache/shared_informer.go
vendored
17
tools/cache/shared_informer.go
vendored
@ -335,7 +335,7 @@ func (s *sharedIndexInformer) AddEventHandlerWithResyncPeriod(handler ResourceEv
|
||||
s.blockDeltas.Lock()
|
||||
defer s.blockDeltas.Unlock()
|
||||
|
||||
s.processor.addAndStartListener(listener)
|
||||
s.processor.addListener(listener)
|
||||
for _, item := range s.indexer.List() {
|
||||
listener.add(addNotification{newObj: item})
|
||||
}
|
||||
@ -373,6 +373,7 @@ func (s *sharedIndexInformer) HandleDeltas(obj interface{}) error {
|
||||
}
|
||||
|
||||
type sharedProcessor struct {
|
||||
listenersStarted bool
|
||||
listenersLock sync.RWMutex
|
||||
listeners []*processorListener
|
||||
syncingListeners []*processorListener
|
||||
@ -380,20 +381,15 @@ type sharedProcessor struct {
|
||||
wg wait.Group
|
||||
}
|
||||
|
||||
func (p *sharedProcessor) addAndStartListener(listener *processorListener) {
|
||||
p.listenersLock.Lock()
|
||||
defer p.listenersLock.Unlock()
|
||||
|
||||
p.addListenerLocked(listener)
|
||||
p.wg.Start(listener.run)
|
||||
p.wg.Start(listener.pop)
|
||||
}
|
||||
|
||||
func (p *sharedProcessor) addListener(listener *processorListener) {
|
||||
p.listenersLock.Lock()
|
||||
defer p.listenersLock.Unlock()
|
||||
|
||||
p.addListenerLocked(listener)
|
||||
if p.listenersStarted {
|
||||
p.wg.Start(listener.run)
|
||||
p.wg.Start(listener.pop)
|
||||
}
|
||||
}
|
||||
|
||||
func (p *sharedProcessor) addListenerLocked(listener *processorListener) {
|
||||
@ -424,6 +420,7 @@ func (p *sharedProcessor) run(stopCh <-chan struct{}) {
|
||||
p.wg.Start(listener.run)
|
||||
p.wg.Start(listener.pop)
|
||||
}
|
||||
p.listenersStarted = true
|
||||
}()
|
||||
<-stopCh
|
||||
p.listenersLock.RLock()
|
||||
|
||||
12
tools/cache/shared_informer_test.go
vendored
12
tools/cache/shared_informer_test.go
vendored
@ -251,3 +251,15 @@ func TestResyncCheckPeriod(t *testing.T) {
|
||||
t.Errorf("expected %d, got %d", e, a)
|
||||
}
|
||||
}
|
||||
|
||||
// verify that https://github.com/kubernetes/kubernetes/issues/59822 is fixed
|
||||
func TestSharedInformerInitializationRace(t *testing.T) {
|
||||
source := fcache.NewFakeControllerSource()
|
||||
informer := NewSharedInformer(source, &v1.Pod{}, 1*time.Second).(*sharedIndexInformer)
|
||||
listener := newTestListener("raceListener", 0)
|
||||
|
||||
stop := make(chan struct{})
|
||||
go informer.AddEventHandlerWithResyncPeriod(listener, listener.resyncPeriod)
|
||||
go informer.Run(stop)
|
||||
close(stop)
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user