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Merge pull request #92476 from Huang-Wei/pbd-bug

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Fix a preemption bug when pods are listed in pdb.Status.DisruptedPods
This commit is contained in:
Kubernetes Prow Robot
2020-06-25 09:46:08 -07:00
committed by GitHub
parent 66761346af 82ab6db94b
commit 62b091b77f
2 changed files with 29 additions and 8 deletions
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20
pkg/scheduler/core/generic_scheduler_test.go
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@@ -1498,10 +1498,28 @@ func TestSelectNodesForPreemption(t *testing.T) {
{ObjectMeta: metav1.ObjectMeta{Name: "a", UID: types.UID("a"), Labels: map[string]string{"app": "foo"}}, Spec: v1.PodSpec{Containers: mediumContainers, Priority: &midPriority, NodeName: "machine1"}},
{ObjectMeta: metav1.ObjectMeta{Name: "b", UID: types.UID("b"), Labels: map[string]string{"app": "foo"}}, Spec: v1.PodSpec{Containers: mediumContainers, Priority: &midPriority, NodeName: "machine1"}}},
pdbs: []*policy.PodDisruptionBudget{
{Spec: policy.PodDisruptionBudgetSpec{Selector: &metav1.LabelSelector{MatchLabels: map[string]string{"app": "foo"}}}, Status: policy.PodDisruptionBudgetStatus{DisruptionsAllowed: 1, DisruptedPods: map[string]metav1.Time{"a": {Time: time.Now()}}}}},
{Spec: policy.PodDisruptionBudgetSpec{Selector: &metav1.LabelSelector{MatchLabels: map[string]string{"app": "foo"}}}, Status: policy.PodDisruptionBudgetStatus{DisruptionsAllowed: 1, DisruptedPods: map[string]metav1.Time{"b": {Time: time.Now()}}}}},
expected: map[string]victims{"machine1": {pods: sets.NewString("a", "b"), numPDBViolations: 0}},
expectedNumFilterCalled: 3,
},
{
name: "preemption with violation of the pdb with pod whose eviction was processed, the victim which belongs to DisruptedPods is treated as 'nonViolating'",
registerPlugins: []st.RegisterPluginFunc{
st.RegisterQueueSortPlugin(queuesort.Name, queuesort.New),
st.RegisterPluginAsExtensions(noderesources.FitName, noderesources.NewFit, "Filter", "PreFilter"),
st.RegisterBindPlugin(defaultbinder.Name, defaultbinder.New),
},
nodes: []string{"machine1"},
pod: &v1.Pod{ObjectMeta: metav1.ObjectMeta{Name: "pod1", UID: types.UID("pod1")}, Spec: v1.PodSpec{Containers: veryLargeContainers, Priority: &highPriority}},
pods: []*v1.Pod{
{ObjectMeta: metav1.ObjectMeta{Name: "a", UID: types.UID("a"), Labels: map[string]string{"app": "foo"}}, Spec: v1.PodSpec{Containers: mediumContainers, Priority: &midPriority, NodeName: "machine1"}},
{ObjectMeta: metav1.ObjectMeta{Name: "b", UID: types.UID("b"), Labels: map[string]string{"app": "foo"}}, Spec: v1.PodSpec{Containers: mediumContainers, Priority: &midPriority, NodeName: "machine1"}},
{ObjectMeta: metav1.ObjectMeta{Name: "c", UID: types.UID("c"), Labels: map[string]string{"app": "foo"}}, Spec: v1.PodSpec{Containers: mediumContainers, Priority: &midPriority, NodeName: "machine1"}}},
pdbs: []*policy.PodDisruptionBudget{
{Spec: policy.PodDisruptionBudgetSpec{Selector: &metav1.LabelSelector{MatchLabels: map[string]string{"app": "foo"}}}, Status: policy.PodDisruptionBudgetStatus{DisruptionsAllowed: 1, DisruptedPods: map[string]metav1.Time{"c": {Time: time.Now()}}}}},
expected: map[string]victims{"machine1": {pods: sets.NewString("a", "b", "c"), numPDBViolations: 1}},
expectedNumFilterCalled: 4,
},
}
labelKeys := []string{"hostname", "zone", "region"}
for _, test := range tests {