Make sure score plugins are executed when no priority configured

pkg/scheduler/core/generic_scheduler.go

@@ -713,7 +713,7 @@ func PrioritizeNodes(
 	state *framework.CycleState) (framework.NodeScoreList, error) {
 	// If no priority configs are provided, then the EqualPriority function is applied
 	// This is required to generate the priority list in the required format
-	if len(priorityConfigs) == 0 && len(extenders) == 0 {
+	if len(priorityConfigs) == 0 && len(extenders) == 0 && !fwk.HasScorePlugins() {
 		result := make(framework.NodeScoreList, 0, len(nodes))
 		for i := range nodes {
 			hostPriority, err := EqualPriorityMap(pod, meta, nodeNameToInfo[nodes[i].Name])

pkg/scheduler/framework/v1alpha1/framework.go

@@ -635,6 +635,11 @@ func (f *framework) HasFilterPlugins() bool {
 	return len(f.filterPlugins) > 0
 }
 
+// HasScorePlugins returns true if at least one score plugin is defined.
+func (f *framework) HasScorePlugins() bool {
+	return len(f.scorePlugins) > 0
+}
+
 // ListPlugins returns a map of extension point name to plugin names configured at each extension
 // point. Returns nil if no plugins where configred.
 func (f *framework) ListPlugins() map[string][]config.Plugin {

pkg/scheduler/framework/v1alpha1/interface.go

@@ -442,9 +442,12 @@ type Framework interface {
 	// code=4("skip") status.
 	RunBindPlugins(ctx context.Context, state *CycleState, pod *v1.Pod, nodeName string) *Status
 
-	// HasFilterPlugins return true if at least one filter plugin is defined
+	// HasFilterPlugins returns true if at least one filter plugin is defined.
 	HasFilterPlugins() bool
 
+	// HasScorePlugins returns true if at least one score plugin is defined.
+	HasScorePlugins() bool
+
 	// ListPlugins returns a map of extension point name to list of configured Plugins.
 	ListPlugins() map[string][]config.Plugin
 }

pkg/scheduler/internal/queue/scheduling_queue_test.go

@@ -179,6 +179,10 @@ func (f *fakeFramework) HasFilterPlugins() bool {
 	return true
 }
 
+func (f *fakeFramework) HasScorePlugins() bool {
+	return true
+}
+
 func (f *fakeFramework) ListPlugins() map[string][]config.Plugin {
 	return nil
 }