Revert "enhancement(scheduler): share waitingPods among profiles"

This reverts commit 227c191.

Author: kerthcet

pkg/scheduler/framework/plugins/defaultpreemption/default_preemption_test.go

@@ -364,7 +364,6 @@ func TestPostFilter(t *testing.T) {
 				frameworkruntime.WithExtenders(extenders),
 				frameworkruntime.WithSnapshotSharedLister(internalcache.NewSnapshot(tt.pods, tt.nodes)),
 				frameworkruntime.WithLogger(logger),
-				frameworkruntime.WithWaitingPods(frameworkruntime.NewWaitingPodsMap()),
 			)
 			if err != nil {
 				t.Fatal(err)
@@ -1703,8 +1702,6 @@ func TestPreempt(t *testing.T) {
 			ctx, cancel := context.WithCancel(ctx)
 			defer cancel()
 
-			waitingPods := frameworkruntime.NewWaitingPodsMap()
-
 			cache := internalcache.New(ctx, time.Duration(0))
 			for _, pod := range test.pods {
 				cache.AddPod(logger, pod)
@@ -1748,7 +1745,6 @@ func TestPreempt(t *testing.T) {
 				frameworkruntime.WithPodNominator(internalqueue.NewPodNominator(informerFactory.Core().V1().Pods().Lister())),
 				frameworkruntime.WithSnapshotSharedLister(internalcache.NewSnapshot(test.pods, nodes)),
 				frameworkruntime.WithInformerFactory(informerFactory),
-				frameworkruntime.WithWaitingPods(waitingPods),
 				frameworkruntime.WithLogger(logger),
 			)
 			if err != nil {

pkg/scheduler/framework/runtime/framework.go

@@ -132,7 +132,6 @@ type frameworkOptions struct {
 	extenders              []framework.Extender
 	captureProfile         CaptureProfile
 	parallelizer           parallelize.Parallelizer
-	waitingPods            *waitingPodsMap
 	logger                 *klog.Logger
 }
 
@@ -222,13 +221,6 @@ func WithMetricsRecorder(r *metrics.MetricAsyncRecorder) Option {
 	}
 }
 
-// WithWaitingPods sets waitingPods for the scheduling frameworkImpl.
-func WithWaitingPods(wp *waitingPodsMap) Option {
-	return func(o *frameworkOptions) {
-		o.waitingPods = wp
-	}
-}
-
 // WithLogger overrides the default logger from k8s.io/klog.
 func WithLogger(logger klog.Logger) Option {
 	return func(o *frameworkOptions) {
@@ -262,7 +254,7 @@ func NewFramework(ctx context.Context, r Registry, profile *config.KubeScheduler
 		registry:             r,
 		snapshotSharedLister: options.snapshotSharedLister,
 		scorePluginWeight:    make(map[string]int),
-		waitingPods:          options.waitingPods,
+		waitingPods:          newWaitingPodsMap(),
 		clientSet:            options.clientSet,
 		kubeConfig:           options.kubeConfig,
 		eventRecorder:        options.eventRecorder,

pkg/scheduler/framework/runtime/framework_test.go

@@ -2808,9 +2808,7 @@ func TestPermitPlugins(t *testing.T) {
 			profile := config.KubeSchedulerProfile{Plugins: configPlugins}
 			ctx, cancel := context.WithCancel(context.Background())
 			defer cancel()
-			f, err := newFrameworkWithQueueSortAndBind(ctx, registry, profile,
-				WithWaitingPods(NewWaitingPodsMap()),
-			)
+			f, err := newFrameworkWithQueueSortAndBind(ctx, registry, profile)
 			if err != nil {
 				t.Fatalf("fail to create framework: %s", err)
 			}
@@ -2992,10 +2990,7 @@ func TestRecordingMetrics(t *testing.T) {
 				SchedulerName:            testProfileName,
 				Plugins:                  plugins,
 			}
-			f, err := newFrameworkWithQueueSortAndBind(ctx, r, profile,
-				withMetricsRecorder(recorder),
-				WithWaitingPods(NewWaitingPodsMap()),
-			)
+			f, err := newFrameworkWithQueueSortAndBind(ctx, r, profile, withMetricsRecorder(recorder))
 			if err != nil {
 				cancel()
 				t.Fatalf("Failed to create framework for testing: %v", err)
@@ -3165,9 +3160,7 @@ func TestPermitWaitDurationMetric(t *testing.T) {
 			profile := config.KubeSchedulerProfile{Plugins: plugins}
 			ctx, cancel := context.WithCancel(context.Background())
 			defer cancel()
-			f, err := newFrameworkWithQueueSortAndBind(ctx, r, profile,
-				WithWaitingPods(NewWaitingPodsMap()),
-			)
+			f, err := newFrameworkWithQueueSortAndBind(ctx, r, profile)
 			if err != nil {
 				t.Fatalf("Failed to create framework for testing: %v", err)
 			}
@@ -3223,9 +3216,7 @@ func TestWaitOnPermit(t *testing.T) {
 			profile := config.KubeSchedulerProfile{Plugins: plugins}
 			ctx, cancel := context.WithCancel(context.Background())
 			defer cancel()
-			f, err := newFrameworkWithQueueSortAndBind(ctx, r, profile,
-				WithWaitingPods(NewWaitingPodsMap()),
-			)
+			f, err := newFrameworkWithQueueSortAndBind(ctx, r, profile)
 			if err != nil {
 				t.Fatalf("Failed to create framework for testing: %v", err)
 			}

pkg/scheduler/framework/runtime/waiting_pods_map.go

@@ -32,8 +32,8 @@ type waitingPodsMap struct {
 	mu   sync.RWMutex
 }
 
-// NewWaitingPodsMap returns a new waitingPodsMap.
-func NewWaitingPodsMap() *waitingPodsMap {
+// newWaitingPodsMap returns a new waitingPodsMap.
+func newWaitingPodsMap() *waitingPodsMap {
 	return &waitingPodsMap{
 		pods: make(map[types.UID]*waitingPod),
 	}

pkg/scheduler/schedule_one_test.go

@@ -773,9 +773,7 @@ func TestSchedulerScheduleOne(t *testing.T) {
 				registerPluginFuncs,
 				testSchedulerName,
 				frameworkruntime.WithClientSet(client),
-				frameworkruntime.WithEventRecorder(eventBroadcaster.NewRecorder(scheme.Scheme, testSchedulerName)),
-				frameworkruntime.WithWaitingPods(frameworkruntime.NewWaitingPodsMap()),
-			)
+				frameworkruntime.WithEventRecorder(eventBroadcaster.NewRecorder(scheme.Scheme, testSchedulerName)))
 			if err != nil {
 				t.Fatal(err)
 			}
@@ -3525,7 +3523,6 @@ func setupTestScheduler(ctx context.Context, t *testing.T, queuedPodStore *clien
 		informerFactory = informers.NewSharedInformerFactory(clientsetfake.NewSimpleClientset(), 0)
 	}
 	schedulingQueue := internalqueue.NewTestQueueWithInformerFactory(ctx, nil, informerFactory)
-	waitingPods := frameworkruntime.NewWaitingPodsMap()
 
 	fwk, _ := tf.NewFramework(
 		ctx,
@@ -3535,7 +3532,6 @@ func setupTestScheduler(ctx context.Context, t *testing.T, queuedPodStore *clien
 		frameworkruntime.WithEventRecorder(recorder),
 		frameworkruntime.WithInformerFactory(informerFactory),
 		frameworkruntime.WithPodNominator(internalqueue.NewPodNominator(informerFactory.Core().V1().Pods().Lister())),
-		frameworkruntime.WithWaitingPods(waitingPods),
 	)
 
 	errChan := make(chan error, 1)

pkg/scheduler/scheduler.go

@@ -292,8 +292,6 @@ func New(ctx context.Context,
 
 	snapshot := internalcache.NewEmptySnapshot()
 	metricsRecorder := metrics.NewMetricsAsyncRecorder(1000, time.Second, stopEverything)
-	// waitingPods holds all the pods that are in the scheduler and waiting in the permit stage
-	waitingPods := frameworkruntime.NewWaitingPodsMap()
 
 	profiles, err := profile.NewMap(ctx, options.profiles, registry, recorderFactory,
 		frameworkruntime.WithComponentConfigVersion(options.componentConfigVersion),
@@ -305,7 +303,6 @@ func New(ctx context.Context,
 		frameworkruntime.WithParallelism(int(options.parallelism)),
 		frameworkruntime.WithExtenders(extenders),
 		frameworkruntime.WithMetricsRecorder(metricsRecorder),
-		frameworkruntime.WithWaitingPods(waitingPods),
 	)
 	if err != nil {
 		return nil, fmt.Errorf("initializing profiles: %v", err)

pkg/scheduler/scheduler_test.go

@@ -21,16 +21,13 @@ import (
 	"fmt"
 	"sort"
 	"strings"
-	"sync"
 	"testing"
 	"time"
 
 	"github.com/google/go-cmp/cmp"
 	v1 "k8s.io/api/core/v1"
-	eventsv1 "k8s.io/api/events/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
-	"k8s.io/apimachinery/pkg/util/sets"
 	utilfeature "k8s.io/apiserver/pkg/util/feature"
 	"k8s.io/client-go/informers"
 	"k8s.io/client-go/kubernetes"
@@ -440,14 +437,12 @@ func initScheduler(ctx context.Context, cache internalcache.Cache, queue interna
 		tf.RegisterBindPlugin(defaultbinder.Name, defaultbinder.New),
 	}
 	eventBroadcaster := events.NewBroadcaster(&events.EventSinkImpl{Interface: client.EventsV1()})
-	waitingPods := frameworkruntime.NewWaitingPodsMap()
 	fwk, err := tf.NewFramework(ctx,
 		registerPluginFuncs,
 		testSchedulerName,
 		frameworkruntime.WithClientSet(client),
 		frameworkruntime.WithInformerFactory(informerFactory),
 		frameworkruntime.WithEventRecorder(eventBroadcaster.NewRecorder(scheme.Scheme, testSchedulerName)),
-		frameworkruntime.WithWaitingPods(waitingPods),
 	)
 	if err != nil {
 		return nil, nil, err
@@ -596,7 +591,6 @@ const (
 	queueSort                      = "no-op-queue-sort-plugin"
 	fakeBind                       = "bind-plugin"
 	emptyEventExtensions           = "emptyEventExtensions"
-	fakePermit                     = "fakePermit"
 )
 
 func Test_buildQueueingHintMap(t *testing.T) {
@@ -911,160 +905,6 @@ func newFramework(ctx context.Context, r frameworkruntime.Registry, profile sche
 	)
 }
 
-func TestFrameworkHandler_IterateOverWaitingPods(t *testing.T) {
-	const (
-		testSchedulerProfile1 = "test-scheduler-profile-1"
-		testSchedulerProfile2 = "test-scheduler-profile-2"
-		testSchedulerProfile3 = "test-scheduler-profile-3"
-	)
-
-	nodes := []runtime.Object{
-		st.MakeNode().Name("node1").UID("node1").Obj(),
-		st.MakeNode().Name("node2").UID("node2").Obj(),
-		st.MakeNode().Name("node3").UID("node3").Obj(),
-	}
-
-	cases := []struct {
-		name                        string
-		profiles                    []schedulerapi.KubeSchedulerProfile
-		waitSchedulingPods          []*v1.Pod
-		expectPodNamesInWaitingPods []string
-	}{
-		{
-			name: "pods with same profile are waiting on permit stage",
-			profiles: []schedulerapi.KubeSchedulerProfile{
-				{
-					SchedulerName: testSchedulerProfile1,
-					Plugins: &schedulerapi.Plugins{
-						QueueSort: schedulerapi.PluginSet{Enabled: []schedulerapi.Plugin{{Name: "PrioritySort"}}},
-						Permit:    schedulerapi.PluginSet{Enabled: []schedulerapi.Plugin{{Name: fakePermit}}},
-						Bind:      schedulerapi.PluginSet{Enabled: []schedulerapi.Plugin{{Name: "DefaultBinder"}}},
-					},
-				},
-			},
-			waitSchedulingPods: []*v1.Pod{
-				st.MakePod().Name("pod1").UID("pod1").SchedulerName(testSchedulerProfile1).Obj(),
-				st.MakePod().Name("pod2").UID("pod2").SchedulerName(testSchedulerProfile1).Obj(),
-				st.MakePod().Name("pod3").UID("pod3").SchedulerName(testSchedulerProfile1).Obj(),
-			},
-			expectPodNamesInWaitingPods: []string{"pod1", "pod2", "pod3"},
-		},
-		{
-			name: "pods with different profiles are waiting on permit stage",
-			profiles: []schedulerapi.KubeSchedulerProfile{
-				{
-					SchedulerName: testSchedulerProfile1,
-					Plugins: &schedulerapi.Plugins{
-						QueueSort: schedulerapi.PluginSet{Enabled: []schedulerapi.Plugin{{Name: "PrioritySort"}}},
-						Permit:    schedulerapi.PluginSet{Enabled: []schedulerapi.Plugin{{Name: fakePermit}}},
-						Bind:      schedulerapi.PluginSet{Enabled: []schedulerapi.Plugin{{Name: "DefaultBinder"}}},
-					},
-				},
-				{
-					SchedulerName: testSchedulerProfile2,
-					Plugins: &schedulerapi.Plugins{
-						QueueSort: schedulerapi.PluginSet{Enabled: []schedulerapi.Plugin{{Name: "PrioritySort"}}},
-						Permit:    schedulerapi.PluginSet{Enabled: []schedulerapi.Plugin{{Name: fakePermit}}},
-						Bind:      schedulerapi.PluginSet{Enabled: []schedulerapi.Plugin{{Name: "DefaultBinder"}}},
-					},
-				},
-				{
-					SchedulerName: testSchedulerProfile3,
-					Plugins: &schedulerapi.Plugins{
-						QueueSort: schedulerapi.PluginSet{Enabled: []schedulerapi.Plugin{{Name: "PrioritySort"}}},
-						Permit:    schedulerapi.PluginSet{Enabled: []schedulerapi.Plugin{{Name: fakePermit}}},
-						Bind:      schedulerapi.PluginSet{Enabled: []schedulerapi.Plugin{{Name: "DefaultBinder"}}},
-					},
-				},
-			},
-			waitSchedulingPods: []*v1.Pod{
-				st.MakePod().Name("pod1").UID("pod1").SchedulerName(testSchedulerProfile1).Obj(),
-				st.MakePod().Name("pod2").UID("pod2").SchedulerName(testSchedulerProfile1).Obj(),
-				st.MakePod().Name("pod3").UID("pod3").SchedulerName(testSchedulerProfile2).Obj(),
-				st.MakePod().Name("pod4").UID("pod4").SchedulerName(testSchedulerProfile3).Obj(),
-			},
-			expectPodNamesInWaitingPods: []string{"pod1", "pod2", "pod3", "pod4"},
-		},
-	}
-
-	for _, tc := range cases {
-		t.Run(tc.name, func(t *testing.T) {
-			// Set up scheduler for the 3 nodes.
-			objs := append([]runtime.Object{&v1.Namespace{ObjectMeta: metav1.ObjectMeta{Name: ""}}}, nodes...)
-			fakeClient := fake.NewSimpleClientset(objs...)
-			informerFactory := informers.NewSharedInformerFactory(fakeClient, 0)
-			eventBroadcaster := events.NewBroadcaster(&events.EventSinkImpl{Interface: fakeClient.EventsV1()})
-			eventRecorder := eventBroadcaster.NewRecorder(scheme.Scheme, fakePermit)
-
-			outOfTreeRegistry := frameworkruntime.Registry{
-				fakePermit: newFakePermitPlugin(eventRecorder),
-			}
-
-			_, ctx := ktesting.NewTestContext(t)
-			ctx, cancel := context.WithCancel(ctx)
-			defer cancel()
-
-			scheduler, err := New(
-				ctx,
-				fakeClient,
-				informerFactory,
-				nil,
-				profile.NewRecorderFactory(eventBroadcaster),
-				WithProfiles(tc.profiles...),
-				WithFrameworkOutOfTreeRegistry(outOfTreeRegistry),
-			)
-
-			if err != nil {
-				t.Fatalf("Failed to create scheduler: %v", err)
-			}
-
-			var wg sync.WaitGroup
-			waitSchedulingPodNumber := len(tc.waitSchedulingPods)
-			wg.Add(waitSchedulingPodNumber)
-			stopFn, err := eventBroadcaster.StartEventWatcher(func(obj runtime.Object) {
-				e, ok := obj.(*eventsv1.Event)
-				if !ok || (e.Reason != podWaitingReason) {
-					return
-				}
-				wg.Done()
-			})
-			if err != nil {
-				t.Fatal(err)
-			}
-			defer stopFn()
-
-			// Run scheduler.
-			informerFactory.Start(ctx.Done())
-			informerFactory.WaitForCacheSync(ctx.Done())
-			go scheduler.Run(ctx)
-
-			// Send pods to be scheduled.
-			for _, p := range tc.waitSchedulingPods {
-				_, err = fakeClient.CoreV1().Pods("").Create(ctx, p, metav1.CreateOptions{})
-				if err != nil {
-					t.Fatal(err)
-				}
-			}
-
-			// Wait all pods in waitSchedulingPods to be scheduled.
-			wg.Wait()
-
-			// Ensure that all waitingPods in scheduler can be obtained from any profiles.
-			for _, fwk := range scheduler.Profiles {
-				actualPodNamesInWaitingPods := sets.NewString()
-				fwk.IterateOverWaitingPods(func(pod framework.WaitingPod) {
-					actualPodNamesInWaitingPods.Insert(pod.GetPod().Name)
-				})
-				// Validate the name of pods in waitingPods matches expectations.
-				if actualPodNamesInWaitingPods.Len() != len(tc.expectPodNamesInWaitingPods) ||
-					!actualPodNamesInWaitingPods.HasAll(tc.expectPodNamesInWaitingPods...) {
-					t.Fatalf("Unexpected waitingPods in scheduler profile %s, expect: %#v, got: %#v", fwk.ProfileName(), tc.expectPodNamesInWaitingPods, actualPodNamesInWaitingPods.List())
-				}
-			}
-		})
-	}
-}
-
 var _ framework.QueueSortPlugin = &fakeQueueSortPlugin{}
 
 // fakeQueueSortPlugin is a no-op implementation for QueueSort extension point.
@@ -1164,36 +1004,3 @@ func (*emptyEventsToRegisterPlugin) Filter(_ context.Context, _ *framework.Cycle
 }
 
 func (*emptyEventsToRegisterPlugin) EventsToRegister() []framework.ClusterEventWithHint { return nil }
-
-// fakePermitPlugin only implements PermitPlugin interface.
-type fakePermitPlugin struct {
-	eventRecorder events.EventRecorder
-}
-
-func newFakePermitPlugin(eventRecorder events.EventRecorder) frameworkruntime.PluginFactory {
-	return func(ctx context.Context, configuration runtime.Object, f framework.Handle) (framework.Plugin, error) {
-		pl := &fakePermitPlugin{
-			eventRecorder: eventRecorder,
-		}
-		return pl, nil
-	}
-}
-
-func (f fakePermitPlugin) Name() string {
-	return fakePermit
-}
-
-const (
-	podWaitingReason = "podWaiting"
-)
-
-func (f fakePermitPlugin) Permit(ctx context.Context, state *framework.CycleState, p *v1.Pod, nodeName string) (*framework.Status, time.Duration) {
-	defer func() {
-		// Send event with podWaiting reason to broadcast this pod is already waiting in the permit stage.
-		f.eventRecorder.Eventf(p, nil, v1.EventTypeWarning, podWaitingReason, "", "")
-	}()
-
-	return framework.NewStatus(framework.Wait), 100 * time.Second
-}
-
-var _ framework.PermitPlugin = &fakePermitPlugin{}