add slow test for terminated pod garbage collection

hack/jenkins/e2e.sh

@@ -148,6 +148,7 @@ GCE_SLOW_TESTS=(
     "Nodes\sResize"                                   # 3 min 30 sec, file: resize_nodes.go,         issue: #13323
     "resource\susage\stracking"                       # 1 hour,       file: kubelet_perf.go,         slow by design
     "monotonically\sincreasing\srestart\scount"       # 1.5 to 5 min, file: pods.go,                 slow by design
+    "Garbage\scollector\sshould"                      # 7 min,        file: garbage_collector.go,    slow by design
     "KubeProxy\sshould\stest\skube-proxy"             # 9 min 30 sec, file: kubeproxy.go,            issue: #14204
     )
 

test/e2e/garbage_collector.go

+/*
+Copyright 2015 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package e2e
+
+import (
+	"time"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+
+	"k8s.io/kubernetes/pkg/api"
+	"k8s.io/kubernetes/pkg/fields"
+	"k8s.io/kubernetes/pkg/labels"
+	"k8s.io/kubernetes/pkg/util"
+)
+
+// This test requires that --terminated-pod-gc-threshold=100 be set on the controller manager
+var _ = Describe("Garbage collector", func() {
+	f := NewFramework("garbage-collector")
+	It("should handle the creation of 1000 pods", func() {
+		SkipUnlessProviderIs("gce")
+
+		var count int
+		for count < 1000 {
+			pod, err := createTerminatingPod(f)
+			pod.ResourceVersion = ""
+			pod.Status.Phase = api.PodFailed
+			pod, err = f.Client.Pods(f.Namespace.Name).UpdateStatus(pod)
+			if err != nil {
+				Failf("err failing pod: %v", err)
+			}
+
+			count++
+			if count%50 == 0 {
+				Logf("count: %v", count)
+			}
+		}
+
+		Logf("created: %v", count)
+		// This sleep has to be longer than the gcCheckPeriod defined
+		// in pkg/controller/gc/gc_controller.go which is currently
+		// 20 seconds.
+		time.Sleep(30 * time.Second)
+
+		pods, err := f.Client.Pods(f.Namespace.Name).List(labels.Everything(), fields.Everything())
+		Expect(err).NotTo(HaveOccurred())
+		Expect(len(pods.Items)).To(BeNumerically("==", 100))
+	})
+})
+
+func createTerminatingPod(f *Framework) (*api.Pod, error) {
+	uuid := util.NewUUID()
+	pod := &api.Pod{
+		ObjectMeta: api.ObjectMeta{
+			Name: string(uuid),
+		},
+		Spec: api.PodSpec{
+			NodeName: "nonexistant-node",
+			Containers: []api.Container{
+				{
+					Name:  string(uuid),
+					Image: "beta.gcr.io/google_containers/busybox",
+				},
+			},
+		},
+	}
+	return f.Client.Pods(f.Namespace.Name).Create(pod)
+}