Merge pull request kubernetes#65188 from aveshagarwal/master-rhbz-155…

…5057

Automatic merge from submit-queue (batch tested with PRs 65188, 65541, 65534). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Increase glog level of some scheduling errors.

In our production environments, we are noticing that for every scheduling error, we are logging 3 errors at following lines:

1. https://github.com/kubernetes/kubernetes/blob/master/pkg/scheduler/scheduler.go#L194

2. https://github.com/kubernetes/kubernetes/blob/master/pkg/scheduler/factory/factory.go#L1416

3. https://github.com/kubernetes/kubernetes/blob/master/pkg/scheduler/factory/factory.go#L1323

This PR increases log levels of the last 2 errors to V(3).Infof. We can discuss if it would be helpful to increase the log level of the first error too.

@kubernetes/sig-scheduling-pr-reviews 
@bsalamat @k82cn @liggitt @sjenning 

```release-note
None.
```

pkg/scheduler/factory/factory.go

@@ -1414,7 +1414,7 @@ type podConditionUpdater struct {
 }
 
 func (p *podConditionUpdater) Update(pod *v1.Pod, condition *v1.PodCondition) error {
-	glog.V(2).Infof("Updating pod condition for %s/%s to (%s==%s)", pod.Namespace, pod.Name, condition.Type, condition.Status)
+	glog.V(3).Infof("Updating pod condition for %s/%s to (%s==%s)", pod.Namespace, pod.Name, condition.Type, condition.Status)
 	if podutil.UpdatePodCondition(&pod.Status, condition) {
 		_, err := p.Client.CoreV1().Pods(pod.Namespace).UpdateStatus(pod)
 		return err

pkg/scheduler/scheduler.go

@@ -192,7 +192,6 @@ func (sched *Scheduler) Config() *Config {
 func (sched *Scheduler) schedule(pod *v1.Pod) (string, error) {
 	host, err := sched.config.Algorithm.Schedule(pod, sched.config.NodeLister)
 	if err != nil {
-		glog.V(1).Infof("Failed to schedule pod: %v/%v", pod.Namespace, pod.Name)
 		pod = pod.DeepCopy()
 		sched.config.Error(pod, err)
 		sched.config.Recorder.Eventf(pod, v1.EventTypeWarning, "FailedScheduling", "%v", err)