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scheduler_test.go
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/*
Copyright The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package scheduler
import (
"context"
"errors"
"fmt"
"reflect"
"sort"
"sync"
"testing"
"time"
"github.com/google/go-cmp/cmp"
"github.com/google/go-cmp/cmp/cmpopts"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/apimachinery/pkg/util/validation/field"
"k8s.io/client-go/tools/record"
"k8s.io/component-base/metrics/testutil"
testingclock "k8s.io/utils/clock/testing"
"k8s.io/utils/ptr"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/client/interceptor"
config "sigs.k8s.io/kueue/apis/config/v1beta1"
kueuealpha "sigs.k8s.io/kueue/apis/kueue/v1alpha1"
kueue "sigs.k8s.io/kueue/apis/kueue/v1beta1"
"sigs.k8s.io/kueue/pkg/cache"
"sigs.k8s.io/kueue/pkg/constants"
tasindexer "sigs.k8s.io/kueue/pkg/controller/tas/indexer"
"sigs.k8s.io/kueue/pkg/features"
"sigs.k8s.io/kueue/pkg/metrics"
"sigs.k8s.io/kueue/pkg/queue"
"sigs.k8s.io/kueue/pkg/resources"
"sigs.k8s.io/kueue/pkg/scheduler/flavorassigner"
"sigs.k8s.io/kueue/pkg/util/limitrange"
"sigs.k8s.io/kueue/pkg/util/routine"
"sigs.k8s.io/kueue/pkg/util/slices"
utiltas "sigs.k8s.io/kueue/pkg/util/tas"
utiltesting "sigs.k8s.io/kueue/pkg/util/testing"
testingnode "sigs.k8s.io/kueue/pkg/util/testingjobs/node"
testingpod "sigs.k8s.io/kueue/pkg/util/testingjobs/pod"
"sigs.k8s.io/kueue/pkg/workload"
)
const (
queueingTimeout = time.Second
)
var cmpDump = []cmp.Option{
cmpopts.SortSlices(func(a, b string) bool { return a < b }),
}
func TestSchedule(t *testing.T) {
now := time.Now()
fakeClock := testingclock.NewFakeClock(now)
ignoreEventMessageCmpOpts := []cmp.Option{cmpopts.IgnoreFields(utiltesting.EventRecord{}, "Message")}
resourceFlavors := []*kueue.ResourceFlavor{
utiltesting.MakeResourceFlavor("default").Obj(),
utiltesting.MakeResourceFlavor("on-demand").Obj(),
utiltesting.MakeResourceFlavor("spot").Obj(),
utiltesting.MakeResourceFlavor("model-a").Obj(),
}
clusterQueues := []kueue.ClusterQueue{
*utiltesting.MakeClusterQueue("sales").
NamespaceSelector(&metav1.LabelSelector{
MatchExpressions: []metav1.LabelSelectorRequirement{{
Key: "dep",
Operator: metav1.LabelSelectorOpIn,
Values: []string{"sales"},
}},
}).
QueueingStrategy(kueue.StrictFIFO).
ResourceGroup(*utiltesting.MakeFlavorQuotas("default").
Resource(corev1.ResourceCPU, "50", "0").Obj()).
Obj(),
*utiltesting.MakeClusterQueue("eng-alpha").
Cohort("eng").
NamespaceSelector(&metav1.LabelSelector{
MatchExpressions: []metav1.LabelSelectorRequirement{{
Key: "dep",
Operator: metav1.LabelSelectorOpIn,
Values: []string{"eng"},
}},
}).
QueueingStrategy(kueue.StrictFIFO).
ResourceGroup(
*utiltesting.MakeFlavorQuotas("on-demand").
Resource(corev1.ResourceCPU, "50", "50").Obj(),
*utiltesting.MakeFlavorQuotas("spot").
Resource(corev1.ResourceCPU, "100", "0").Obj(),
).
Obj(),
*utiltesting.MakeClusterQueue("eng-beta").
Cohort("eng").
NamespaceSelector(&metav1.LabelSelector{
MatchExpressions: []metav1.LabelSelectorRequirement{{
Key: "dep",
Operator: metav1.LabelSelectorOpIn,
Values: []string{"eng"},
}},
}).
QueueingStrategy(kueue.StrictFIFO).
Preemption(kueue.ClusterQueuePreemption{
ReclaimWithinCohort: kueue.PreemptionPolicyAny,
WithinClusterQueue: kueue.PreemptionPolicyLowerPriority,
}).
ResourceGroup(
*utiltesting.MakeFlavorQuotas("on-demand").
Resource(corev1.ResourceCPU, "50", "10").Obj(),
*utiltesting.MakeFlavorQuotas("spot").
Resource(corev1.ResourceCPU, "0", "100").Obj(),
).
ResourceGroup(
*utiltesting.MakeFlavorQuotas("model-a").
Resource("example.com/gpu", "20", "0").Obj(),
).
Obj(),
*utiltesting.MakeClusterQueue("flavor-nonexistent-cq").
QueueingStrategy(kueue.StrictFIFO).
ResourceGroup(*utiltesting.MakeFlavorQuotas("nonexistent-flavor").
Resource(corev1.ResourceCPU, "50").Obj()).
Obj(),
*utiltesting.MakeClusterQueue("lend-a").
Cohort("lend").
NamespaceSelector(&metav1.LabelSelector{
MatchExpressions: []metav1.LabelSelectorRequirement{{
Key: "dep",
Operator: metav1.LabelSelectorOpIn,
Values: []string{"lend"},
}},
}).
ResourceGroup(*utiltesting.MakeFlavorQuotas("default").
Resource(corev1.ResourceCPU, "3", "", "2").Obj()).
Obj(),
*utiltesting.MakeClusterQueue("lend-b").
Cohort("lend").
NamespaceSelector(&metav1.LabelSelector{
MatchExpressions: []metav1.LabelSelectorRequirement{{
Key: "dep",
Operator: metav1.LabelSelectorOpIn,
Values: []string{"lend"},
}},
}).
ResourceGroup(*utiltesting.MakeFlavorQuotas("default").
Resource(corev1.ResourceCPU, "2", "", "2").Obj()).
Obj(),
}
queues := []kueue.LocalQueue{
{
ObjectMeta: metav1.ObjectMeta{
Namespace: "sales",
Name: "main",
},
Spec: kueue.LocalQueueSpec{
ClusterQueue: "sales",
},
},
{
ObjectMeta: metav1.ObjectMeta{
Namespace: "sales",
Name: "blocked",
},
Spec: kueue.LocalQueueSpec{
ClusterQueue: "eng-alpha",
},
},
{
ObjectMeta: metav1.ObjectMeta{
Namespace: "eng-alpha",
Name: "main",
},
Spec: kueue.LocalQueueSpec{
ClusterQueue: "eng-alpha",
},
},
{
ObjectMeta: metav1.ObjectMeta{
Namespace: "eng-beta",
Name: "main",
},
Spec: kueue.LocalQueueSpec{
ClusterQueue: "eng-beta",
},
},
{
ObjectMeta: metav1.ObjectMeta{
Namespace: "sales",
Name: "flavor-nonexistent-queue",
},
Spec: kueue.LocalQueueSpec{
ClusterQueue: "flavor-nonexistent-cq",
},
},
{
ObjectMeta: metav1.ObjectMeta{
Namespace: "sales",
Name: "cq-nonexistent-queue",
},
Spec: kueue.LocalQueueSpec{
ClusterQueue: "nonexistent-cq",
},
},
{
ObjectMeta: metav1.ObjectMeta{
Namespace: "lend",
Name: "lend-a-queue",
},
Spec: kueue.LocalQueueSpec{
ClusterQueue: "lend-a",
},
},
{
ObjectMeta: metav1.ObjectMeta{
Namespace: "lend",
Name: "lend-b-queue",
},
Spec: kueue.LocalQueueSpec{
ClusterQueue: "lend-b",
},
},
}
cases := map[string]struct {
// Features
disableLendingLimit bool
disablePartialAdmission bool
enableFairSharing bool
workloads []kueue.Workload
objects []client.Object
admissionError error
// additional*Queues can hold any extra queues needed by the tc
additionalClusterQueues []kueue.ClusterQueue
additionalLocalQueues []kueue.LocalQueue
// wantAssignments is a summary of all the admissions in the cache after this cycle.
wantAssignments map[string]kueue.Admission
// wantScheduled is the subset of workloads that got scheduled/admitted in this cycle.
wantScheduled []string
// workloadCmpOpts are the cmp options to compare workloads.
workloadCmpOpts []cmp.Option
// wantWorkloads is the subset of workloads that got admitted in this cycle.
wantWorkloads []kueue.Workload
// wantLeft is the workload keys that are left in the queues after this cycle.
wantLeft map[string][]string
// wantInadmissibleLeft is the workload keys that are left in the inadmissible state after this cycle.
wantInadmissibleLeft map[string][]string
// wantPreempted is the keys of the workloads that get preempted in the scheduling cycle.
wantPreempted sets.Set[string]
// wantEvents ignored if empty, the Message is ignored (it contains the duration)
wantEvents []utiltesting.EventRecord
// eventCmpOpts are the cmp options to compare recorded events.
eventCmpOpts []cmp.Option
wantSkippedPreemptions map[string]int
}{
"workload fits in single clusterQueue, with check state ready": {
workloads: []kueue.Workload{
*utiltesting.MakeWorkload("foo", "sales").
Queue("main").
PodSets(*utiltesting.MakePodSet("one", 10).
Request(corev1.ResourceCPU, "1").
Obj()).
AdmissionCheck(kueue.AdmissionCheckState{
Name: "check",
State: kueue.CheckStateReady,
}).
Generation(1).
Obj(),
},
wantAssignments: map[string]kueue.Admission{
"sales/foo": {
ClusterQueue: "sales",
PodSetAssignments: []kueue.PodSetAssignment{
{
Name: "one",
Flavors: map[corev1.ResourceName]kueue.ResourceFlavorReference{
corev1.ResourceCPU: "default",
},
ResourceUsage: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("10000m"),
},
Count: ptr.To[int32](10),
},
},
},
},
wantScheduled: []string{"sales/foo"},
workloadCmpOpts: []cmp.Option{
cmpopts.EquateEmpty(),
cmpopts.IgnoreFields(metav1.Condition{}, "LastTransitionTime"),
cmpopts.IgnoreFields(
kueue.Workload{}, "TypeMeta", "ObjectMeta.Name", "ObjectMeta.ResourceVersion",
),
},
wantWorkloads: []kueue.Workload{
*utiltesting.MakeWorkload("foo", "sales").
Queue("main").
PodSets(*utiltesting.MakePodSet("one", 10).
Request(corev1.ResourceCPU, "1").
Obj()).
AdmissionCheck(kueue.AdmissionCheckState{
Name: "check",
State: kueue.CheckStateReady,
}).
Admission(
utiltesting.MakeAdmission("sales", "one").
Assignment(corev1.ResourceCPU, "default", "10000m").
AssignmentPodCount(10).
Obj(),
).
Generation(1).
Condition(metav1.Condition{
Type: kueue.WorkloadQuotaReserved,
Status: metav1.ConditionTrue,
Reason: kueue.WorkloadQuotaReserved,
Message: "Quota reserved in ClusterQueue sales",
ObservedGeneration: 1,
}).
Condition(metav1.Condition{
Type: kueue.WorkloadAdmitted,
Status: metav1.ConditionTrue,
Reason: kueue.WorkloadAdmitted,
Message: "The workload is admitted",
ObservedGeneration: 1,
}).
Obj(),
},
eventCmpOpts: ignoreEventMessageCmpOpts,
wantEvents: []utiltesting.EventRecord{
{
Key: types.NamespacedName{Namespace: "sales", Name: "foo"},
Reason: "QuotaReserved",
EventType: corev1.EventTypeNormal,
},
{
Key: types.NamespacedName{Namespace: "sales", Name: "foo"},
Reason: "Admitted",
EventType: corev1.EventTypeNormal,
},
},
},
"workload fits in single clusterQueue, with check state pending": {
workloads: []kueue.Workload{
*utiltesting.MakeWorkload("foo", "sales").
Queue("main").
PodSets(*utiltesting.MakePodSet("one", 10).
Request(corev1.ResourceCPU, "1").
Obj()).
AdmissionCheck(kueue.AdmissionCheckState{
Name: "check",
State: kueue.CheckStatePending,
}).
Obj(),
},
wantAssignments: map[string]kueue.Admission{
"sales/foo": {
ClusterQueue: "sales",
PodSetAssignments: []kueue.PodSetAssignment{
{
Name: "one",
Flavors: map[corev1.ResourceName]kueue.ResourceFlavorReference{
corev1.ResourceCPU: "default",
},
ResourceUsage: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("10000m"),
},
Count: ptr.To[int32](10),
},
},
},
},
wantScheduled: []string{"sales/foo"},
eventCmpOpts: ignoreEventMessageCmpOpts,
wantEvents: []utiltesting.EventRecord{
{
Key: types.NamespacedName{Namespace: "sales", Name: "foo"},
Reason: "QuotaReserved",
EventType: corev1.EventTypeNormal,
},
},
},
"error during admission": {
workloads: []kueue.Workload{
*utiltesting.MakeWorkload("foo", "sales").
Queue("main").
PodSets(*utiltesting.MakePodSet("one", 10).
Request(corev1.ResourceCPU, "1").
Obj()).
Obj(),
},
admissionError: errors.New("admission"),
wantLeft: map[string][]string{
"sales": {"sales/foo"},
},
},
"single clusterQueue full": {
workloads: []kueue.Workload{
*utiltesting.MakeWorkload("new", "sales").
Queue("main").
PodSets(*utiltesting.MakePodSet("one", 11).
Request(corev1.ResourceCPU, "1").
Obj()).
Obj(),
*utiltesting.MakeWorkload("assigned", "sales").
PodSets(*utiltesting.MakePodSet("one", 40).
Request(corev1.ResourceCPU, "1").
Obj()).
ReserveQuota(utiltesting.MakeAdmission("sales", "one").Assignment(corev1.ResourceCPU, "default", "40000m").AssignmentPodCount(40).Obj()).
Obj(),
},
wantAssignments: map[string]kueue.Admission{
"sales/assigned": {
ClusterQueue: "sales",
PodSetAssignments: []kueue.PodSetAssignment{
{
Name: "one",
Flavors: map[corev1.ResourceName]kueue.ResourceFlavorReference{
corev1.ResourceCPU: "default",
},
ResourceUsage: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("40000m"),
},
Count: ptr.To[int32](40),
},
},
},
},
wantLeft: map[string][]string{
"sales": {"sales/new"},
},
},
"failed to match clusterQueue selector": {
workloads: []kueue.Workload{
*utiltesting.MakeWorkload("new", "sales").
Queue("blocked").
PodSets(*utiltesting.MakePodSet("one", 1).
Request(corev1.ResourceCPU, "1").
Obj()).
Obj(),
},
wantInadmissibleLeft: map[string][]string{
"eng-alpha": {"sales/new"},
},
},
"admit in different cohorts": {
workloads: []kueue.Workload{
*utiltesting.MakeWorkload("new", "sales").
Queue("main").
PodSets(*utiltesting.MakePodSet("one", 1).
Request(corev1.ResourceCPU, "1").
Obj()).
Obj(),
*utiltesting.MakeWorkload("new", "eng-alpha").
Queue("main").
PodSets(*utiltesting.MakePodSet("one", 51 /* Will borrow */).
Request(corev1.ResourceCPU, "1").
Obj()).
Obj(),
},
wantAssignments: map[string]kueue.Admission{
"sales/new": {
ClusterQueue: "sales",
PodSetAssignments: []kueue.PodSetAssignment{
{
Name: "one",
Flavors: map[corev1.ResourceName]kueue.ResourceFlavorReference{
corev1.ResourceCPU: "default",
},
ResourceUsage: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("1000m"),
},
Count: ptr.To[int32](1),
},
},
},
"eng-alpha/new": {
ClusterQueue: "eng-alpha",
PodSetAssignments: []kueue.PodSetAssignment{
{
Name: "one",
Flavors: map[corev1.ResourceName]kueue.ResourceFlavorReference{
corev1.ResourceCPU: "on-demand",
},
ResourceUsage: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("51000m"),
},
Count: ptr.To[int32](51),
},
},
},
},
wantScheduled: []string{"sales/new", "eng-alpha/new"},
},
"admit in same cohort with no borrowing": {
workloads: []kueue.Workload{
*utiltesting.MakeWorkload("new", "eng-alpha").
Queue("main").
PodSets(*utiltesting.MakePodSet("one", 40).
Request(corev1.ResourceCPU, "1").
Obj()).
Obj(),
*utiltesting.MakeWorkload("new", "eng-beta").
Queue("main").
PodSets(*utiltesting.MakePodSet("one", 40).
Request(corev1.ResourceCPU, "1").
Obj()).
Obj(),
},
wantAssignments: map[string]kueue.Admission{
"eng-alpha/new": {
ClusterQueue: "eng-alpha",
PodSetAssignments: []kueue.PodSetAssignment{
{
Name: "one",
Flavors: map[corev1.ResourceName]kueue.ResourceFlavorReference{
corev1.ResourceCPU: "on-demand",
},
ResourceUsage: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("40000m"),
},
Count: ptr.To[int32](40),
},
},
},
"eng-beta/new": {
ClusterQueue: "eng-beta",
PodSetAssignments: []kueue.PodSetAssignment{
{
Name: "one",
Flavors: map[corev1.ResourceName]kueue.ResourceFlavorReference{
corev1.ResourceCPU: "on-demand",
},
ResourceUsage: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("40000m"),
},
Count: ptr.To[int32](40),
},
},
},
},
wantScheduled: []string{"eng-alpha/new", "eng-beta/new"},
},
"assign multiple resources and flavors": {
workloads: []kueue.Workload{
*utiltesting.MakeWorkload("new", "eng-beta").
Queue("main").
PodSets(
*utiltesting.MakePodSet("one", 10).
Request(corev1.ResourceCPU, "6").
Request("example.com/gpu", "1").
Obj(),
*utiltesting.MakePodSet("two", 40).
Request(corev1.ResourceCPU, "1").
Obj(),
).
Obj(),
},
wantAssignments: map[string]kueue.Admission{
"eng-beta/new": {
ClusterQueue: "eng-beta",
PodSetAssignments: []kueue.PodSetAssignment{
{
Name: "one",
Flavors: map[corev1.ResourceName]kueue.ResourceFlavorReference{
corev1.ResourceCPU: "on-demand",
"example.com/gpu": "model-a",
},
ResourceUsage: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("60000m"),
"example.com/gpu": resource.MustParse("10"),
},
Count: ptr.To[int32](10),
},
{
Name: "two",
Flavors: map[corev1.ResourceName]kueue.ResourceFlavorReference{
corev1.ResourceCPU: "spot",
},
ResourceUsage: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("40000m"),
},
Count: ptr.To[int32](40),
},
},
},
},
wantScheduled: []string{"eng-beta/new"},
},
"cannot borrow if cohort was assigned and would result in overadmission": {
workloads: []kueue.Workload{
*utiltesting.MakeWorkload("new", "eng-alpha").
Queue("main").
PodSets(*utiltesting.MakePodSet("one", 45).
Request(corev1.ResourceCPU, "1").
Obj()).
Obj(),
*utiltesting.MakeWorkload("new", "eng-beta").
Queue("main").
PodSets(*utiltesting.MakePodSet("one", 56).
Request(corev1.ResourceCPU, "1").
Obj()).
Obj(),
},
wantAssignments: map[string]kueue.Admission{
"eng-alpha/new": {
ClusterQueue: "eng-alpha",
PodSetAssignments: []kueue.PodSetAssignment{
{
Name: "one",
Flavors: map[corev1.ResourceName]kueue.ResourceFlavorReference{
corev1.ResourceCPU: "on-demand",
},
ResourceUsage: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("45000m"),
},
Count: ptr.To[int32](45),
},
},
},
},
wantScheduled: []string{"eng-alpha/new"},
wantLeft: map[string][]string{
"eng-beta": {"eng-beta/new"},
},
},
"can borrow if cohort was assigned and will not result in overadmission": {
workloads: []kueue.Workload{
*utiltesting.MakeWorkload("new", "eng-alpha").
Queue("main").
PodSets(*utiltesting.MakePodSet("one", 45).
Request(corev1.ResourceCPU, "1").
Obj()).
Obj(),
*utiltesting.MakeWorkload("new", "eng-beta").
Queue("main").
PodSets(*utiltesting.MakePodSet("one", 55).
Request(corev1.ResourceCPU, "1").
Obj()).
Obj(),
},
wantAssignments: map[string]kueue.Admission{
"eng-alpha/new": {
ClusterQueue: "eng-alpha",
PodSetAssignments: []kueue.PodSetAssignment{
{
Name: "one",
Flavors: map[corev1.ResourceName]kueue.ResourceFlavorReference{
corev1.ResourceCPU: "on-demand",
},
ResourceUsage: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("45000m"),
},
Count: ptr.To[int32](45),
},
},
},
"eng-beta/new": {
ClusterQueue: "eng-beta",
PodSetAssignments: []kueue.PodSetAssignment{
{
Name: "one",
Flavors: map[corev1.ResourceName]kueue.ResourceFlavorReference{
corev1.ResourceCPU: "on-demand",
},
ResourceUsage: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("55000m"),
},
Count: ptr.To[int32](55),
},
},
},
},
wantScheduled: []string{"eng-alpha/new", "eng-beta/new"},
},
"can borrow if needs reclaim from cohort in different flavor": {
workloads: []kueue.Workload{
*utiltesting.MakeWorkload("can-reclaim", "eng-alpha").
Queue("main").
Request(corev1.ResourceCPU, "100").
Obj(),
*utiltesting.MakeWorkload("needs-to-borrow", "eng-beta").
Queue("main").
Request(corev1.ResourceCPU, "1").
Obj(),
*utiltesting.MakeWorkload("user-on-demand", "eng-beta").
Request(corev1.ResourceCPU, "50").
ReserveQuota(utiltesting.MakeAdmission("eng-beta").Assignment(corev1.ResourceCPU, "on-demand", "50000m").Obj()).
Obj(),
*utiltesting.MakeWorkload("user-spot", "eng-beta").
Request(corev1.ResourceCPU, "1").
ReserveQuota(utiltesting.MakeAdmission("eng-beta").Assignment(corev1.ResourceCPU, "spot", "1000m").Obj()).
Obj(),
},
wantLeft: map[string][]string{
"eng-alpha": {"eng-alpha/can-reclaim"},
},
wantAssignments: map[string]kueue.Admission{
"eng-beta/user-spot": *utiltesting.MakeAdmission("eng-beta").Assignment(corev1.ResourceCPU, "spot", "1000m").Obj(),
"eng-beta/user-on-demand": *utiltesting.MakeAdmission("eng-beta").Assignment(corev1.ResourceCPU, "on-demand", "50000m").Obj(),
"eng-beta/needs-to-borrow": *utiltesting.MakeAdmission("eng-beta").Assignment(corev1.ResourceCPU, "on-demand", "1000m").Obj(),
},
wantScheduled: []string{
"eng-beta/needs-to-borrow",
},
},
"workload exceeds lending limit when borrow in cohort": {
workloads: []kueue.Workload{
*utiltesting.MakeWorkload("a", "lend").
Request(corev1.ResourceCPU, "2").
ReserveQuota(utiltesting.MakeAdmission("lend-b").Assignment(corev1.ResourceCPU, "default", "2000m").Obj()).
Obj(),
*utiltesting.MakeWorkload("b", "lend").
Queue("lend-b-queue").
Request(corev1.ResourceCPU, "3").
Obj(),
},
wantAssignments: map[string]kueue.Admission{
"lend/a": *utiltesting.MakeAdmission("lend-b").Assignment(corev1.ResourceCPU, "default", "2000m").Obj(),
},
wantInadmissibleLeft: map[string][]string{
"lend-b": {"lend/b"},
},
},
"lendingLimit should not affect assignments when feature disabled": {
disableLendingLimit: true,
workloads: []kueue.Workload{
*utiltesting.MakeWorkload("a", "lend").
Request(corev1.ResourceCPU, "2").
ReserveQuota(utiltesting.MakeAdmission("lend-b").Assignment(corev1.ResourceCPU, "default", "2000m").Obj()).
Obj(),
*utiltesting.MakeWorkload("b", "lend").
Queue("lend-b-queue").
Request(corev1.ResourceCPU, "3").
Obj(),
},
wantAssignments: map[string]kueue.Admission{
"lend/a": *utiltesting.MakeAdmission("lend-b").Assignment(corev1.ResourceCPU, "default", "2000m").Obj(),
"lend/b": *utiltesting.MakeAdmission("lend-b").Assignment(corev1.ResourceCPU, "default", "3000m").Obj(),
},
wantScheduled: []string{
"lend/b",
},
},
"preempt workloads in ClusterQueue and cohort": {
workloads: []kueue.Workload{
*utiltesting.MakeWorkload("preemptor", "eng-beta").
Queue("main").
Request(corev1.ResourceCPU, "20").
Obj(),
*utiltesting.MakeWorkload("use-all-spot", "eng-alpha").
Request(corev1.ResourceCPU, "100").
ReserveQuota(utiltesting.MakeAdmission("eng-alpha").Assignment(corev1.ResourceCPU, "spot", "100000m").Obj()).
Obj(),
*utiltesting.MakeWorkload("low-1", "eng-beta").
Priority(-1).
Request(corev1.ResourceCPU, "30").
ReserveQuota(utiltesting.MakeAdmission("eng-beta").Assignment(corev1.ResourceCPU, "on-demand", "30000m").Obj()).
Obj(),
*utiltesting.MakeWorkload("low-2", "eng-beta").
Priority(-2).
Request(corev1.ResourceCPU, "10").
ReserveQuota(utiltesting.MakeAdmission("eng-beta").Assignment(corev1.ResourceCPU, "on-demand", "10000m").Obj()).
Obj(),
*utiltesting.MakeWorkload("borrower", "eng-alpha").
Request(corev1.ResourceCPU, "60").
ReserveQuota(utiltesting.MakeAdmission("eng-alpha").Assignment(corev1.ResourceCPU, "on-demand", "60000m").Obj()).
Obj(),
},
wantLeft: map[string][]string{
// Preemptor is not admitted in this cycle.
"eng-beta": {"eng-beta/preemptor"},
},
wantPreempted: sets.New("eng-alpha/borrower", "eng-beta/low-2"),
wantAssignments: map[string]kueue.Admission{
"eng-alpha/use-all-spot": *utiltesting.MakeAdmission("eng-alpha").Assignment(corev1.ResourceCPU, "spot", "100").Obj(),
"eng-beta/low-1": *utiltesting.MakeAdmission("eng-beta").Assignment(corev1.ResourceCPU, "on-demand", "30").Obj(),
// Removal from cache for the preempted workloads is deferred until we receive Workload updates
"eng-beta/low-2": *utiltesting.MakeAdmission("eng-beta").Assignment(corev1.ResourceCPU, "on-demand", "10").Obj(),
"eng-alpha/borrower": *utiltesting.MakeAdmission("eng-alpha").Assignment(corev1.ResourceCPU, "on-demand", "60").Obj(),
},
},
"multiple CQs need preemption": {
additionalClusterQueues: []kueue.ClusterQueue{
*utiltesting.MakeClusterQueue("other-alpha").
Cohort("other").
ResourceGroup(
*utiltesting.MakeFlavorQuotas("on-demand").
Resource(corev1.ResourceCPU, "50", "50").Obj(),
).
Obj(),
*utiltesting.MakeClusterQueue("other-beta").
Cohort("other").
Preemption(kueue.ClusterQueuePreemption{
ReclaimWithinCohort: kueue.PreemptionPolicyAny,
WithinClusterQueue: kueue.PreemptionPolicyLowerPriority,
}).
ResourceGroup(
*utiltesting.MakeFlavorQuotas("on-demand").
Resource(corev1.ResourceCPU, "50", "10").Obj(),
).
Obj(),
},
additionalLocalQueues: []kueue.LocalQueue{
*utiltesting.MakeLocalQueue("other", "eng-alpha").ClusterQueue("other-alpha").Obj(),
*utiltesting.MakeLocalQueue("other", "eng-beta").ClusterQueue("other-beta").Obj(),
},
workloads: []kueue.Workload{
*utiltesting.MakeWorkload("preemptor", "eng-beta").
Priority(-1).
Queue("other").
Request(corev1.ResourceCPU, "1").
Obj(),
*utiltesting.MakeWorkload("pending", "eng-alpha").
Priority(1).
Queue("other").
Request(corev1.ResourceCPU, "1").
Obj(),
*utiltesting.MakeWorkload("use-all", "eng-alpha").
Request(corev1.ResourceCPU, "100").
ReserveQuota(utiltesting.MakeAdmission("other-alpha").Assignment(corev1.ResourceCPU, "on-demand", "100").Obj()).
Obj(),
},
wantLeft: map[string][]string{
// Preemptor is not admitted in this cycle.
"other-beta": {"eng-beta/preemptor"},
},
wantInadmissibleLeft: map[string][]string{
"other-alpha": {"eng-alpha/pending"},
},
wantPreempted: sets.New("eng-alpha/use-all"),
wantAssignments: map[string]kueue.Admission{
// Removal from cache for the preempted workloads is deferred until we receive Workload updates
"eng-alpha/use-all": *utiltesting.MakeAdmission("other-alpha").Assignment(corev1.ResourceCPU, "on-demand", "100").Obj(),
},
},
"cannot borrow resource not listed in clusterQueue": {
workloads: []kueue.Workload{
*utiltesting.MakeWorkload("new", "eng-alpha").
Queue("main").
Request("example.com/gpu", "1").
Obj(),
},
wantLeft: map[string][]string{
"eng-alpha": {"eng-alpha/new"},
},
},
"not enough resources to borrow, fallback to next flavor": {
workloads: []kueue.Workload{
*utiltesting.MakeWorkload("new", "eng-alpha").
Queue("main").
PodSets(*utiltesting.MakePodSet("one", 60).
Request(corev1.ResourceCPU, "1").
Obj()).
Obj(),
*utiltesting.MakeWorkload("existing", "eng-beta").
PodSets(*utiltesting.MakePodSet("one", 45).
Request(corev1.ResourceCPU, "1").
Obj()).
ReserveQuota(utiltesting.MakeAdmission("eng-beta", "one").Assignment(corev1.ResourceCPU, "on-demand", "45000m").AssignmentPodCount(45).Obj()).
Obj(),
},
wantAssignments: map[string]kueue.Admission{
"eng-alpha/new": {
ClusterQueue: "eng-alpha",
PodSetAssignments: []kueue.PodSetAssignment{
{
Name: "one",
Flavors: map[corev1.ResourceName]kueue.ResourceFlavorReference{
corev1.ResourceCPU: "spot",
},
ResourceUsage: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("60000m"),
},
Count: ptr.To[int32](60),
},
},
},
"eng-beta/existing": {
ClusterQueue: "eng-beta",
PodSetAssignments: []kueue.PodSetAssignment{
{
Name: "one",
Flavors: map[corev1.ResourceName]kueue.ResourceFlavorReference{
corev1.ResourceCPU: "on-demand",
},
ResourceUsage: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("45000m"),
},
Count: ptr.To[int32](45),
},
},
},
},
wantScheduled: []string{"eng-alpha/new"},
},
"workload should not fit in nonexistent clusterQueue": {
workloads: []kueue.Workload{
*utiltesting.MakeWorkload("foo", "sales").
Queue("cq-nonexistent-queue").
Request(corev1.ResourceCPU, "1").
Obj(),
},
},
"workload should not fit in clusterQueue with nonexistent flavor": {
workloads: []kueue.Workload{
*utiltesting.MakeWorkload("foo", "sales").
Queue("flavor-nonexistent-queue").
Request(corev1.ResourceCPU, "1").
Obj(),
},
wantLeft: map[string][]string{
"flavor-nonexistent-cq": {"sales/foo"},
},
},
"no overadmission while borrowing": {
workloads: []kueue.Workload{
*utiltesting.MakeWorkload("new", "eng-beta").
Queue("main").
Creation(now.Add(-2 * time.Second)).
PodSets(*utiltesting.MakePodSet("one", 50).
Request(corev1.ResourceCPU, "1").
Obj()).
Obj(),
*utiltesting.MakeWorkload("new-alpha", "eng-alpha").
Queue("main").
Creation(now.Add(-time.Second)).
PodSets(*utiltesting.MakePodSet("one", 1).
Request(corev1.ResourceCPU, "1").
Obj()).
Obj(),
*utiltesting.MakeWorkload("new-gamma", "eng-gamma").
Queue("main").
Creation(now).
PodSets(*utiltesting.MakePodSet("one", 50).
Request(corev1.ResourceCPU, "1").
Obj()).
Obj(),
*utiltesting.MakeWorkload("existing", "eng-gamma").
PodSets(
*utiltesting.MakePodSet("borrow-on-demand", 51).
Request(corev1.ResourceCPU, "1").
Obj(),
*utiltesting.MakePodSet("use-all-spot", 100).
Request(corev1.ResourceCPU, "1").
Obj(),
).
ReserveQuota(utiltesting.MakeAdmission("eng-gamma").
PodSets(
kueue.PodSetAssignment{
Name: "borrow-on-demand",
Flavors: map[corev1.ResourceName]kueue.ResourceFlavorReference{
corev1.ResourceCPU: "on-demand",
},
ResourceUsage: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("51"),
},
Count: ptr.To[int32](51),
},
kueue.PodSetAssignment{
Name: "use-all-spot",
Flavors: map[corev1.ResourceName]kueue.ResourceFlavorReference{
corev1.ResourceCPU: "spot",
},
ResourceUsage: corev1.ResourceList{
corev1.ResourceCPU: resource.MustParse("100"),
},
Count: ptr.To[int32](100),
},
).
Obj()).
Obj(),
},
additionalClusterQueues: []kueue.ClusterQueue{
*utiltesting.MakeClusterQueue("eng-gamma").
Cohort("eng").
Preemption(kueue.ClusterQueuePreemption{
ReclaimWithinCohort: kueue.PreemptionPolicyAny,