removing deprecated scheduler metrics

Author: arghya88

cmd/kube-scheduler/app/BUILD

@@ -16,7 +16,6 @@ go_library(
         "//pkg/scheduler:go_default_library",
         "//pkg/scheduler/apis/config:go_default_library",
         "//pkg/scheduler/framework/runtime:go_default_library",
-        "//pkg/scheduler/metrics:go_default_library",
         "//pkg/scheduler/profile:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/util/errors:go_default_library",
         "//staging/src/k8s.io/apiserver/pkg/authentication/authenticator:go_default_library",

cmd/kube-scheduler/app/server.go

@@ -53,7 +53,6 @@ import (
 	"k8s.io/kubernetes/pkg/scheduler"
 	kubeschedulerconfig "k8s.io/kubernetes/pkg/scheduler/apis/config"
 	"k8s.io/kubernetes/pkg/scheduler/framework/runtime"
-	"k8s.io/kubernetes/pkg/scheduler/metrics"
 	"k8s.io/kubernetes/pkg/scheduler/profile"
 )
 
@@ -233,7 +232,6 @@ func installMetricHandler(pathRecorderMux *mux.PathRecorderMux) {
 	defaultMetricsHandler := legacyregistry.Handler().ServeHTTP
 	pathRecorderMux.HandleFunc("/metrics", func(w http.ResponseWriter, req *http.Request) {
 		if req.Method == "DELETE" {
-			metrics.Reset()
 			w.Header().Set("Content-Type", "text/plain; charset=utf-8")
 			w.Header().Set("X-Content-Type-Options", "nosniff")
 			io.WriteString(w, "metrics reset\n")

pkg/scheduler/core/generic_scheduler.go

@@ -142,7 +142,6 @@ func (g *genericScheduler) Schedule(ctx context.Context, prof *profile.Profile,
 		return result, ErrNoNodesAvailable
 	}
 
-	startPredicateEvalTime := time.Now()
 	feasibleNodes, filteredNodesStatuses, err := g.findNodesThatFitPod(ctx, prof, state, pod)
 	if err != nil {
 		return result, err
@@ -157,13 +156,8 @@ func (g *genericScheduler) Schedule(ctx context.Context, prof *profile.Profile,
 		}
 	}
 
-	metrics.DeprecatedSchedulingAlgorithmPredicateEvaluationSecondsDuration.Observe(metrics.SinceInSeconds(startPredicateEvalTime))
-	metrics.DeprecatedSchedulingDuration.WithLabelValues(metrics.PredicateEvaluation).Observe(metrics.SinceInSeconds(startPredicateEvalTime))
-
-	startPriorityEvalTime := time.Now()
 	// When only one node after predicate, just use it.
 	if len(feasibleNodes) == 1 {
-		metrics.DeprecatedSchedulingAlgorithmPriorityEvaluationSecondsDuration.Observe(metrics.SinceInSeconds(startPriorityEvalTime))
 		return ScheduleResult{
 			SuggestedHost:  feasibleNodes[0].Name,
 			EvaluatedNodes: 1 + len(filteredNodesStatuses),
@@ -176,9 +170,6 @@ func (g *genericScheduler) Schedule(ctx context.Context, prof *profile.Profile,
 		return result, err
 	}
 
-	metrics.DeprecatedSchedulingAlgorithmPriorityEvaluationSecondsDuration.Observe(metrics.SinceInSeconds(startPriorityEvalTime))
-	metrics.DeprecatedSchedulingDuration.WithLabelValues(metrics.PriorityEvaluation).Observe(metrics.SinceInSeconds(startPriorityEvalTime))
-
 	host, err := g.selectHost(priorityList)
 	trace.Step("Prioritizing done")
 

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

@@ -80,7 +80,6 @@ func (pl *DefaultPreemption) PostFilter(ctx context.Context, state *framework.Cy
 	defer func() {
 		metrics.PreemptionAttempts.Inc()
 		metrics.SchedulingAlgorithmPreemptionEvaluationDuration.Observe(metrics.SinceInSeconds(preemptionStartTime))
-		metrics.DeprecatedSchedulingDuration.WithLabelValues(metrics.PreemptionEvaluation).Observe(metrics.SinceInSeconds(preemptionStartTime))
 	}()
 
 	nnn, err := pl.preempt(ctx, state, pod, m)

pkg/scheduler/metrics/metrics.go

@@ -28,17 +28,11 @@ import (
 const (
 	// SchedulerSubsystem - subsystem name used by scheduler
 	SchedulerSubsystem = "scheduler"
-	// DeprecatedSchedulingDurationName - scheduler duration metric name which is deprecated
-	DeprecatedSchedulingDurationName = "scheduling_duration_seconds"
 
 	// OperationLabel - operation label name
 	OperationLabel = "operation"
 	// Below are possible values for the operation label. Each represents a substep of e2e scheduling:
 
-	// PredicateEvaluation - predicate evaluation operation label value
-	PredicateEvaluation = "predicate_evaluation"
-	// PriorityEvaluation - priority evaluation operation label value
-	PriorityEvaluation = "priority_evaluation"
 	// PreemptionEvaluation - preemption evaluation operation label value (occurs in case of scheduling fitError).
 	PreemptionEvaluation = "preemption_evaluation"
 	// Binding - binding operation label value
@@ -55,19 +49,7 @@ var (
 			Help:           "Number of attempts to schedule pods, by the result. 'unschedulable' means a pod could not be scheduled, while 'error' means an internal scheduler problem.",
 			StabilityLevel: metrics.ALPHA,
 		}, []string{"result", "profile"})
-	DeprecatedSchedulingDuration = metrics.NewSummaryVec(
-		&metrics.SummaryOpts{
-			Subsystem: SchedulerSubsystem,
-			Name:      DeprecatedSchedulingDurationName,
-			Help:      "Scheduling latency in seconds split by sub-parts of the scheduling operation (Deprecated since 1.19.0)",
-			// Make the sliding window of 5h.
-			// TODO: The value for this should be based on some SLI definition (long term).
-			MaxAge:            5 * time.Hour,
-			StabilityLevel:    metrics.ALPHA,
-			DeprecatedVersion: "1.19.0",
-		},
-		[]string{OperationLabel},
-	)
+
 	e2eSchedulingLatency = metrics.NewHistogramVec(
 		&metrics.HistogramOpts{
 			Subsystem:      SchedulerSubsystem,
@@ -85,26 +67,6 @@ var (
 			StabilityLevel: metrics.ALPHA,
 		},
 	)
-	DeprecatedSchedulingAlgorithmPredicateEvaluationSecondsDuration = metrics.NewHistogram(
-		&metrics.HistogramOpts{
-			Subsystem:         SchedulerSubsystem,
-			Name:              "scheduling_algorithm_predicate_evaluation_seconds",
-			Help:              "Scheduling algorithm predicate evaluation duration in seconds (Deprecated since 1.19.0)",
-			Buckets:           metrics.ExponentialBuckets(0.001, 2, 15),
-			StabilityLevel:    metrics.ALPHA,
-			DeprecatedVersion: "1.19.0",
-		},
-	)
-	DeprecatedSchedulingAlgorithmPriorityEvaluationSecondsDuration = metrics.NewHistogram(
-		&metrics.HistogramOpts{
-			Subsystem:         SchedulerSubsystem,
-			Name:              "scheduling_algorithm_priority_evaluation_seconds",
-			Help:              "Scheduling algorithm priority evaluation duration in seconds (Deprecated since 1.19.0)",
-			Buckets:           metrics.ExponentialBuckets(0.001, 2, 15),
-			StabilityLevel:    metrics.ALPHA,
-			DeprecatedVersion: "1.19.0",
-		},
-	)
 	SchedulingAlgorithmPreemptionEvaluationDuration = metrics.NewHistogram(
 		&metrics.HistogramOpts{
 			Subsystem:      SchedulerSubsystem,
@@ -225,12 +187,9 @@ var (
 
 	metricsList = []metrics.Registerable{
 		scheduleAttempts,
-		DeprecatedSchedulingDuration,
 		e2eSchedulingLatency,
 		SchedulingAlgorithmLatency,
 		BindingLatency,
-		DeprecatedSchedulingAlgorithmPredicateEvaluationSecondsDuration,
-		DeprecatedSchedulingAlgorithmPriorityEvaluationSecondsDuration,
 		SchedulingAlgorithmPreemptionEvaluationDuration,
 		PreemptionVictims,
 		PreemptionAttempts,
@@ -285,11 +244,6 @@ func UnschedulablePods() metrics.GaugeMetric {
 	return pendingPods.With(metrics.Labels{"queue": "unschedulable"})
 }
 
-// Reset resets metrics
-func Reset() {
-	DeprecatedSchedulingDuration.Reset()
-}
-
 // SinceInSeconds gets the time since the specified start in seconds.
 func SinceInSeconds(start time.Time) float64 {
 	return time.Since(start).Seconds()

pkg/scheduler/scheduler.go

@@ -418,7 +418,6 @@ func (sched *Scheduler) finishBinding(prof *profile.Profile, assumed *v1.Pod, ta
 	}
 
 	metrics.BindingLatency.Observe(metrics.SinceInSeconds(start))
-	metrics.DeprecatedSchedulingDuration.WithLabelValues(metrics.Binding).Observe(metrics.SinceInSeconds(start))
 	prof.Recorder.Eventf(assumed, nil, v1.EventTypeNormal, "Scheduled", "Binding", "Successfully assigned %v/%v to %v", assumed.Namespace, assumed.Name, targetNode)
 }