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Fix return value of PriorityQueue.Add.

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This function was returning a non-nil error for the common, non-failure
case. The fix is to properly scope local error values and add early
returns.
This commit is contained in:
Jonathan Basseri 2018-12-14 16:31:08 -08:00
parent 59fce36866
commit fae4f69d36
2 changed files with 30 additions and 20 deletions
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30
pkg/scheduler/internal/queue/scheduling_queue.go
View File

@ -317,23 +317,23 @@ func (p *PriorityQueue) updateNominatedPod(oldPod, newPod *v1.Pod) {
func (p *PriorityQueue) Add(pod *v1.Pod) error {
p.lock.Lock()
defer p.lock.Unlock()
err := p.activeQ.Add(pod)
if err != nil {
if err := p.activeQ.Add(pod); err != nil {
klog.Errorf("Error adding pod %v/%v to the scheduling queue: %v", pod.Namespace, pod.Name, err)
} else {
if p.unschedulableQ.get(pod) != nil {
klog.Errorf("Error: pod %v/%v is already in the unschedulable queue.", pod.Namespace, pod.Name)
p.deleteNominatedPodIfExists(pod)
p.unschedulableQ.delete(pod)
}
// Delete pod from backoffQ if it is backing off
if err = p.podBackoffQ.Delete(pod); err == nil {
klog.Errorf("Error: pod %v/%v is already in the podBackoff queue.", pod.Namespace, pod.Name)
}
p.addNominatedPodIfNeeded(pod)
p.cond.Broadcast()
return err
}
return err
if p.unschedulableQ.get(pod) != nil {
klog.Errorf("Error: pod %v/%v is already in the unschedulable queue.", pod.Namespace, pod.Name)
p.deleteNominatedPodIfExists(pod)
p.unschedulableQ.delete(pod)
}
// Delete pod from backoffQ if it is backing off
if err := p.podBackoffQ.Delete(pod); err == nil {
klog.Errorf("Error: pod %v/%v is already in the podBackoff queue.", pod.Namespace, pod.Name)
}
p.addNominatedPodIfNeeded(pod)
p.cond.Broadcast()
return nil
}
// AddIfNotPresent adds a pod to the active queue if it is not present in any of

20
pkg/scheduler/internal/queue/scheduling_queue_test.go
View File

@ -96,9 +96,15 @@ var highPriorityPod, highPriNominatedPod, medPriorityPod, unschedulablePod = v1.
func TestPriorityQueue_Add(t *testing.T) {
q := NewPriorityQueue(nil)
q.Add(&medPriorityPod)
q.Add(&unschedulablePod)
q.Add(&highPriorityPod)
if err := q.Add(&medPriorityPod); err != nil {
t.Errorf("add failed: %v", err)
}
if err := q.Add(&unschedulablePod); err != nil {
t.Errorf("add failed: %v", err)
}
if err := q.Add(&highPriorityPod); err != nil {
t.Errorf("add failed: %v", err)
}
expectedNominatedPods := map[string][]*v1.Pod{
"node1": {&medPriorityPod, &unschedulablePod},
}
@ -228,7 +234,9 @@ func TestPriorityQueue_Delete(t *testing.T) {
q := NewPriorityQueue(nil)
q.Update(&highPriorityPod, &highPriNominatedPod)
q.Add(&unschedulablePod)
q.Delete(&highPriNominatedPod)
if err := q.Delete(&highPriNominatedPod); err != nil {
t.Errorf("delete failed: %v", err)
}
if _, exists, _ := q.activeQ.Get(&unschedulablePod); !exists {
t.Errorf("Expected %v to be in activeQ.", unschedulablePod.Name)
}
@ -238,7 +246,9 @@ func TestPriorityQueue_Delete(t *testing.T) {
if len(q.nominatedPods) != 1 {
t.Errorf("Expected nomindatePods to have only 'unschedulablePod': %v", q.nominatedPods)
}
q.Delete(&unschedulablePod)
if err := q.Delete(&unschedulablePod); err != nil {
t.Errorf("delete failed: %v", err)
}
if len(q.nominatedPods) != 0 {
t.Errorf("Expected nomindatePods to be empty: %v", q.nominatedPods)
}