Fix for #826 and some refactoring (#832)

docs/user-guide.md

@@ -627,7 +627,7 @@ Below is an example that shows how to configure the metric system to expose metr
 
 ```yaml
 spec:
-  dep:
+  deps:
     jars:
     - http://central.maven.org/maven2/io/prometheus/jmx/jmx_prometheus_javaagent/0.11.0/jmx_prometheus_javaagent-0.11.0.jar
   monitoring:
@@ -689,7 +689,7 @@ spec:
   timeToLiveSeconds: 3600
 ```
 
-Note that this feature requires that informer cache resync to be enabled, which is true by default with a resync internal of 30 seconds. You can change the resync interval by setting the flag `-resync-interval=<internval>`.
+Note that this feature requires that informer cache resync to be enabled, which is true by default with a resync internal of 30 seconds. You can change the resync interval by setting the flag `-resync-interval=<interval>`.
 
 ## Running Spark Applications on a Schedule using a ScheduledSparkApplication
 

pkg/batchscheduler/interface/interface.go

@@ -24,5 +24,5 @@ type BatchScheduler interface {
 	Name() string
 
 	ShouldSchedule(app *v1beta2.SparkApplication) bool
-	DoBatchSchedulingOnSubmission(app *v1beta2.SparkApplication) (*v1beta2.SparkApplication, error)
+	DoBatchSchedulingOnSubmission(app *v1beta2.SparkApplication) error
 }

pkg/batchscheduler/volcano/volcano_scheduler.go

@@ -18,18 +18,19 @@ package volcano
 
 import (
 	"fmt"
+
 	corev1 "k8s.io/api/core/v1"
 	apiextensionsclient "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
 	"k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/api/resource"
-	"k8s.io/apimachinery/pkg/apis/meta/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/client-go/rest"
 
 	"volcano.sh/volcano/pkg/apis/scheduling/v1alpha2"
 	volcanoclient "volcano.sh/volcano/pkg/client/clientset/versioned"
 
 	"github.com/GoogleCloudPlatform/spark-on-k8s-operator/pkg/apis/sparkoperator.k8s.io/v1beta2"
-	"github.com/GoogleCloudPlatform/spark-on-k8s-operator/pkg/batchscheduler/interface"
+	schedulerinterface "github.com/GoogleCloudPlatform/spark-on-k8s-operator/pkg/batchscheduler/interface"
 )
 
 const (
@@ -54,39 +55,36 @@ func (v *VolcanoBatchScheduler) ShouldSchedule(app *v1beta2.SparkApplication) bo
 	return true
 }
 
-func (v *VolcanoBatchScheduler) DoBatchSchedulingOnSubmission(app *v1beta2.SparkApplication) (*v1beta2.SparkApplication, error) {
-	newApp := app.DeepCopy()
-	if newApp.Spec.Executor.Annotations == nil {
-		newApp.Spec.Executor.Annotations = make(map[string]string)
+func (v *VolcanoBatchScheduler) DoBatchSchedulingOnSubmission(app *v1beta2.SparkApplication) error {
+	if app.Spec.Executor.Annotations == nil {
+		app.Spec.Executor.Annotations = make(map[string]string)
 	}
 
-	if newApp.Spec.Driver.Annotations == nil {
-		newApp.Spec.Driver.Annotations = make(map[string]string)
+	if app.Spec.Driver.Annotations == nil {
+		app.Spec.Driver.Annotations = make(map[string]string)
 	}
 
-	if newApp.Spec.Mode == v1beta2.ClientMode {
-		return v.syncPodGroupInClientMode(newApp)
-	} else if newApp.Spec.Mode == v1beta2.ClusterMode {
-		return v.syncPodGroupInClusterMode(newApp)
+	if app.Spec.Mode == v1beta2.ClientMode {
+		return v.syncPodGroupInClientMode(app)
+	} else if app.Spec.Mode == v1beta2.ClusterMode {
+		return v.syncPodGroupInClusterMode(app)
 	}
-	return newApp, nil
+	return nil
 }
 
-func (v *VolcanoBatchScheduler) syncPodGroupInClientMode(app *v1beta2.SparkApplication) (*v1beta2.SparkApplication, error) {
-	//We only care about the executor pods in client mode
-	newApp := app.DeepCopy()
-	if _, ok := newApp.Spec.Executor.Annotations[v1alpha2.GroupNameAnnotationKey]; !ok {
-		//Only executor resource will be considered.
-		if err := v.syncPodGroup(newApp, 1, getExecutorRequestResource(app)); err == nil {
-			newApp.Spec.Executor.Annotations[v1alpha2.GroupNameAnnotationKey] = v.getAppPodGroupName(newApp)
+func (v *VolcanoBatchScheduler) syncPodGroupInClientMode(app *v1beta2.SparkApplication) error {
+	// We only care about the executor pods in client mode
+	if _, ok := app.Spec.Executor.Annotations[v1alpha2.GroupNameAnnotationKey]; !ok {
+		if err := v.syncPodGroup(app, 1, getExecutorRequestResource(app)); err == nil {
+			app.Spec.Executor.Annotations[v1alpha2.GroupNameAnnotationKey] = v.getAppPodGroupName(app)
 		} else {
-			return nil, err
+			return err
 		}
 	}
-	return newApp, nil
+	return nil
 }
 
-func (v *VolcanoBatchScheduler) syncPodGroupInClusterMode(app *v1beta2.SparkApplication) (*v1beta2.SparkApplication, error) {
+func (v *VolcanoBatchScheduler) syncPodGroupInClusterMode(app *v1beta2.SparkApplication) error {
 	//We need both mark Driver and Executor when submitting
 	//NOTE: In cluster mode, the initial size of PodGroup is set to 1 in order to schedule driver pod first.
 	if _, ok := app.Spec.Driver.Annotations[v1alpha2.GroupNameAnnotationKey]; !ok {
@@ -96,10 +94,10 @@ func (v *VolcanoBatchScheduler) syncPodGroupInClusterMode(app *v1beta2.SparkAppl
 			app.Spec.Executor.Annotations[v1alpha2.GroupNameAnnotationKey] = v.getAppPodGroupName(app)
 			app.Spec.Driver.Annotations[v1alpha2.GroupNameAnnotationKey] = v.getAppPodGroupName(app)
 		} else {
-			return nil, err
+			return err
 		}
 	}
-	return app, nil
+	return nil
 }
 
 func (v *VolcanoBatchScheduler) getAppPodGroupName(app *v1beta2.SparkApplication) string {
@@ -109,16 +107,16 @@ func (v *VolcanoBatchScheduler) getAppPodGroupName(app *v1beta2.SparkApplication
 func (v *VolcanoBatchScheduler) syncPodGroup(app *v1beta2.SparkApplication, size int32, minResource corev1.ResourceList) error {
 	var err error
 	podGroupName := v.getAppPodGroupName(app)
-	if pg, err := v.volcanoClient.SchedulingV1alpha2().PodGroups(app.Namespace).Get(podGroupName, v1.GetOptions{}); err != nil {
+	if pg, err := v.volcanoClient.SchedulingV1alpha2().PodGroups(app.Namespace).Get(podGroupName, metav1.GetOptions{}); err != nil {
 		if !errors.IsNotFound(err) {
 			return err
 		}
 		podGroup := v1alpha2.PodGroup{
-			ObjectMeta: v1.ObjectMeta{
+			ObjectMeta: metav1.ObjectMeta{
 				Namespace: app.Namespace,
 				Name:      podGroupName,
-				OwnerReferences: []v1.OwnerReference{
-					*v1.NewControllerRef(app, v1beta2.SchemeGroupVersion.WithKind("SparkApplication")),
+				OwnerReferences: []metav1.OwnerReference{
+					*metav1.NewControllerRef(app, v1beta2.SchemeGroupVersion.WithKind("SparkApplication")),
 				},
 			},
 			Spec: v1alpha2.PodGroupSpec{
@@ -164,7 +162,7 @@ func New(config *rest.Config) (schedulerinterface.BatchScheduler, error) {
 	}
 
 	if _, err := extClient.ApiextensionsV1beta1().CustomResourceDefinitions().Get(
-		PodGroupName, v1.GetOptions{}); err != nil {
+		PodGroupName, metav1.GetOptions{}); err != nil {
 		return nil, fmt.Errorf("podGroup CRD is required to exists in current cluster error: %s", err)
 	}
 	return &VolcanoBatchScheduler{

pkg/controller/sparkapplication/controller.go

@@ -175,7 +175,6 @@ func (c *Controller) Stop() {
 // Callback function called when a new SparkApplication object gets created.
 func (c *Controller) onAdd(obj interface{}) {
 	app := obj.(*v1beta2.SparkApplication)
-	v1beta2.SetSparkApplicationDefaults(app)
 	glog.Infof("SparkApplication %s/%s was added, enqueueing it for submission", app.Namespace, app.Name)
 	c.enqueue(app)
 }
@@ -618,6 +617,9 @@ func hasRetryIntervalPassed(retryInterval *int64, attemptsDone int32, lastEventT
 
 // submitSparkApplication creates a new submission for the given SparkApplication and submits it using spark-submit.
 func (c *Controller) submitSparkApplication(app *v1beta2.SparkApplication) *v1beta2.SparkApplication {
+	// Apply default values before submitting the application to run.
+	v1beta2.SetSparkApplicationDefaults(app)
+
 	if app.PrometheusMonitoringEnabled() {
 		if err := configPrometheusMonitoring(app, c.kubeClient); err != nil {
 			glog.Error(err)
@@ -626,13 +628,11 @@ func (c *Controller) submitSparkApplication(app *v1beta2.SparkApplication) *v1be
 
 	// Use batch scheduler to perform scheduling task before submitting (before build command arguments).
 	if needScheduling, scheduler := c.shouldDoBatchScheduling(app); needScheduling {
-		newApp, err := scheduler.DoBatchSchedulingOnSubmission(app)
+		err := scheduler.DoBatchSchedulingOnSubmission(app)
 		if err != nil {
 			glog.Errorf("failed to process batch scheduler BeforeSubmitSparkApplication with error %v", err)
 			return app
 		}
-		//Spark submit will use the updated app to submit tasks(Spec will not be updated into API server)
-		app = newApp
 	}
 
 	driverPodName := getDriverPodName(app)