Scheduler extension

plugin/pkg/scheduler/api/validation/validation.go

@@ -34,5 +34,10 @@ func ValidatePolicy(policy schedulerapi.Policy) error {
 		}
 	}
 
+	for _, extender := range policy.ExtenderConfigs {
+		if extender.Weight < 0 {
+			validationErrors = append(validationErrors, fmt.Errorf("Priority for extender %s should have a non negative weight applied to it", extender.URLPrefix))
+		}
+	}
 	return utilerrors.NewAggregate(validationErrors)
 }