fix ci and add event logging to help debug ci

.github/workflows/e2e_spark.yaml

@@ -12,6 +12,21 @@ jobs:
     name: "E2E about Spark Integration test"
     runs-on: ubuntu-20.04
     steps:
+    - name: Free Disk Space (Ubuntu)
+      uses: jlumbroso/free-disk-space@main
+      with:
+        # this might remove tools that are actually needed,
+        # if set to "true" but frees about 6 GB
+        tool-cache: false
+
+        # all of these default to true, but feel free to set to
+        # "false" if necessary for your workflow
+        android: true
+        dotnet: true
+        haskell: true
+        large-packages: true
+        docker-images: true
+        swap-storage: true
 
     - name: Checkout current Volcano repository
       if: github.event.inputs.volcano-branch==''

test/e2e/util/job.go

@@ -31,6 +31,7 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/apimachinery/pkg/util/wait"
+	"k8s.io/klog/v2"
 
 	batchv1alpha1 "volcano.sh/apis/pkg/apis/batch/v1alpha1"
 	schedulingv1beta1 "volcano.sh/apis/pkg/apis/scheduling/v1beta1"
@@ -275,22 +276,31 @@ func CreateJobInner(ctx *TestContext, jobSpec *JobSpec) (*batchv1alpha1.Job, err
 
 func WaitTaskPhase(ctx *TestContext, job *batchv1alpha1.Job, phase []v1.PodPhase, taskNum int) error {
 	var additionalError error
+	var podNotReadyCache map[string]*v1.Pod
 	err := wait.Poll(100*time.Millisecond, FiveMinute, func() (bool, error) {
 		pods, err := ctx.Kubeclient.CoreV1().Pods(job.Namespace).List(context.TODO(), metav1.ListOptions{})
 		Expect(err).NotTo(HaveOccurred(), "failed to list pods in namespace %s", job.Namespace)
 
 		readyTaskNum := 0
+		podNotReadyCache = make(map[string]*v1.Pod)
 		for _, pod := range pods.Items {
 			if !metav1.IsControlledBy(&pod, job) {
 				continue
 			}
 
+			podReady := false
 			for _, p := range phase {
 				if pod.Status.Phase == p {
 					readyTaskNum++
+					podReady = true
 					break
 				}
 			}
+
+			if !podReady {
+				podKey := fmt.Sprintf("%s/%s", pod.Namespace, pod.Name)
+				podNotReadyCache[podKey] = &pod
+			}
 		}
 
 		ready := taskNum <= readyTaskNum
@@ -302,11 +312,27 @@ func WaitTaskPhase(ctx *TestContext, job *batchv1alpha1.Job, phase []v1.PodPhase
 		return ready, nil
 	})
 	if err != nil && strings.Contains(err.Error(), TimeOutMessage) {
+		logEventsOfNotReadyPods(ctx, podNotReadyCache, phase)
 		return fmt.Errorf("[Wait time out]: %s", additionalError)
 	}
 	return err
 }
 
+func logEventsOfNotReadyPods(ctx *TestContext, podNotReadyCache map[string]*v1.Pod, phase []v1.PodPhase) {
+	for _, pod := range podNotReadyCache {
+		klog.Errorf("The pod <%s/%s> is not in %v phase", pod.Namespace, pod.Name, phase)
+		// Currently, we only filter Failed event
+		fieldSelector := fmt.Sprintf("involvedObject.kind=Pod,involvedObject.name=%s,reason=Failed", pod.Name)
+		events, err := ctx.Kubeclient.CoreV1().Events(pod.Namespace).List(context.TODO(), metav1.ListOptions{
+			FieldSelector: fieldSelector,
+		})
+		Expect(err).NotTo(HaveOccurred(), "failed to get events related with pod %s in namespace %s", pod.Name, pod.Namespace)
+		for _, event := range events.Items {
+			klog.Errorf("Event related with pod <%s/%s>: Reason: %s, Message: %s", pod.Namespace, pod.Name, event.Reason, event.Message)
+		}
+	}
+}
+
 func taskPhaseEx(ctx *TestContext, job *batchv1alpha1.Job, phase []v1.PodPhase, taskNum map[string]int) error {
 	err := wait.Poll(100*time.Millisecond, FiveMinute, func() (bool, error) {
 

test/e2e/util/util.go

@@ -73,12 +73,13 @@ const (
 )
 
 const (
-	DefaultBusyBoxImage = "busybox:1.24"
-	DefaultNginxImage   = "nginx:1.14"
+	DefaultBusyBoxImage = "busybox"
+	DefaultNginxImage   = "nginx"
 	DefaultMPIImage     = "volcanosh/example-mpi:0.0.3"
 	DefaultTFImage      = "volcanosh/dist-mnist-tf-example:0.0.1"
 	// "volcanosh/pytorch-mnist-v1beta1-9ee8fda-example:0.0.1" is from "docker.io/kubeflowkatib/pytorch-mnist:v1beta1-9ee8fda"
 	DefaultPytorchImage = "volcanosh/pytorch-mnist-v1beta1-9ee8fda-example:0.0.1"
+	LogTimeFormat       = "[ 2006/01/02 15:04:05.000 ]"
 )
 
 func CPUResource(request string) v1.ResourceList {