Concurrency fixes in status.Manager

- Fix deadlock when syncing deleted pods with full update channel
- Prevent sending stale updates to API server
- Don't delete cached status when sync fails (causes problems for prober)

pkg/kubelet/prober/worker_test.go

@@ -24,8 +24,10 @@ import (
 	"k8s.io/kubernetes/pkg/api"
 	"k8s.io/kubernetes/pkg/api/unversioned"
 	"k8s.io/kubernetes/pkg/client/record"
+	"k8s.io/kubernetes/pkg/client/unversioned/testclient"
 	kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
 	"k8s.io/kubernetes/pkg/kubelet/prober/results"
+	"k8s.io/kubernetes/pkg/kubelet/status"
 	"k8s.io/kubernetes/pkg/probe"
 	"k8s.io/kubernetes/pkg/util"
 	"k8s.io/kubernetes/pkg/util/exec"
@@ -117,7 +119,7 @@ func TestDoProbe(t *testing.T) {
 			}
 
 			// Clean up.
-			m.statusManager.DeletePodStatus(podUID)
+			m.statusManager = status.NewManager(&testclient.Fake{})
 			resultsManager(m, probeType).Remove(containerID)
 		}
 	}