fix bug in task dependsOn

pkg/controllers/job/job_controller_actions.go

@@ -510,9 +510,25 @@ func (cc *jobcontroller) isDependsOnPodsReady(task string, job *batch.Job) bool
 	runningPodCount := 0
 	for _, podName := range dependsOnPods {
 		pod, err := cc.podLister.Pods(job.Namespace).Get(podName)
+		// If failed to get pod. There are 2 possibilities.
+		// 1. pod not found
+		// 2. Error communicating with apiserver
 		if err != nil {
-			klog.Errorf("Failed to get pod %v/%v %v", job.Namespace, podName, err)
-			continue
+			// If pod is not found. There are 2 possibilities.
+			// 1. vcjob has been deleted.
+			// 2. pod is not created.
+			// if 1, this function should return true.
+			// if 2, this function should return false, continue waiting.
+			if apierrors.IsNotFound(err) {
+				_, errGetJob := cc.jobLister.Jobs(job.Namespace).Get(job.Name)
+				if errGetJob != nil {
+					// vcjob has been deleted.
+					return apierrors.IsNotFound(errGetJob)
+				}
+			} else {
+				klog.Errorf("Failed to get pod %v/%v %v", job.Namespace, podName, err)
+				continue
+			}
 		}
 
 		if pod.Status.Phase != v1.PodRunning && pod.Status.Phase != v1.PodSucceeded {