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EvenPodsSpread: update 'selfMatch' logic

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This commit is contained in:
Wei Huang 2019-07-22 18:48:26 -07:00
parent 39e459ae9a
commit 1822085088
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GPG Key ID: BE5E9752F8B6E005
3 changed files with 98 additions and 17 deletions
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3
pkg/scheduler/algorithm/predicates/metadata.go
View File

@ -35,9 +35,6 @@ import (
schedutil "k8s.io/kubernetes/pkg/scheduler/util"
)
// MaxInt32 is the maximum value of int32
const MaxInt32 = math.MaxInt32
// PredicateMetadata interface represents anything that can access a predicate metadata.
type PredicateMetadata interface {
ShallowCopy() PredicateMetadata

18
pkg/scheduler/algorithm/predicates/predicates.go
View File

@ -1740,14 +1740,7 @@ func EvenPodsSpreadPredicate(pod *v1.Pod, meta PredicateMetadata, nodeInfo *sche
return true, nil, nil
}
selfMatch, err := podLabelsMatchesSpreadConstraints(pod.Labels, constraints)
if err != nil {
return false, nil, err
}
selfMatchNum := 0
if selfMatch {
selfMatchNum = 1
}
podLabelSet := labels.Set(pod.Labels)
for _, constraint := range constraints {
tpKey := constraint.TopologyKey
tpVal, ok := node.Labels[constraint.TopologyKey]
@ -1756,6 +1749,15 @@ func EvenPodsSpreadPredicate(pod *v1.Pod, meta PredicateMetadata, nodeInfo *sche
return false, []PredicateFailureReason{ErrTopologySpreadConstraintsNotMatch}, nil
}
selfMatch, err := podMatchesSpreadConstraint(podLabelSet, constraint)
if err != nil {
return false, nil, err
}
selfMatchNum := 0
if selfMatch {
selfMatchNum = 1
}
pair := topologyPair{key: tpKey, value: tpVal}
minMatchNum, ok := topologyPairsPodSpreadMap.topologyKeyToMinPodsMap[tpKey]
if !ok {

94
pkg/scheduler/algorithm/predicates/predicates_test.go
View File

@ -5300,7 +5300,7 @@ func TestEvenPodsSpreadPredicate_MultipleConstraints(t *testing.T) {
{
// 1. to fulfil "zone" constraint, incoming pod can be placed on any zone (hence any node)
// 2. to fulfil "node" constraint, incoming pod can be placed on node-x
// intersaction of (1) and (2) returns node-x
// intersection of (1) and (2) returns node-x
name: "two constraints on zone and node, spreads = [3/3, 2/1/0/3]",
pod: st.MakePod().Name("p").Label("foo", "").
SpreadConstraint(1, "zone", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
@ -5330,7 +5330,7 @@ func TestEvenPodsSpreadPredicate_MultipleConstraints(t *testing.T) {
{
// 1. to fulfil "zone" constraint, incoming pod can be placed on zone1 (node-a or node-b)
// 2. to fulfil "node" constraint, incoming pod can be placed on node-x
// intersaction of (1) and (2) returns no node
// intersection of (1) and (2) returns no node
name: "two constraints on zone and node, spreads = [3/4, 2/1/0/4]",
pod: st.MakePod().Name("p").Label("foo", "").
SpreadConstraint(1, "zone", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
@ -5359,7 +5359,63 @@ func TestEvenPodsSpreadPredicate_MultipleConstraints(t *testing.T) {
},
},
{
name: "constraints hold different labelSelectors, spreads = [1/1, 1/0/0/1]",
// 1. to fulfil "zone" constraint, incoming pod can be placed on zone2 (node-x or node-y)
// 2. to fulfil "node" constraint, incoming pod can be placed on node-b or node-x
// intersection of (1) and (2) returns node-x
name: "constraints hold different labelSelectors, spreads = [1/0, 1/0/0/1]",
pod: st.MakePod().Name("p").Label("foo", "").Label("bar", "").
SpreadConstraint(1, "zone", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
SpreadConstraint(1, "node", hardSpread, st.MakeLabelSelector().Exists("bar").Obj()).
Obj(),
nodes: []*v1.Node{
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
st.MakeNode().Name("node-x").Label("zone", "zone2").Label("node", "node-x").Obj(),
st.MakeNode().Name("node-y").Label("zone", "zone2").Label("node", "node-y").Obj(),
},
existingPods: []*v1.Pod{
st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
st.MakePod().Name("p-y1").Node("node-y").Label("bar", "").Obj(),
},
fits: map[string]bool{
"node-a": false,
"node-b": false,
"node-x": true,
"node-y": false,
},
},
{
// 1. to fulfil "zone" constraint, incoming pod can be placed on zone2 (node-x or node-y)
// 2. to fulfil "node" constraint, incoming pod can be placed on node-a or node-b
// intersection of (1) and (2) returns no node
name: "constraints hold different labelSelectors, spreads = [1/0, 0/0/1/1]",
pod: st.MakePod().Name("p").Label("foo", "").Label("bar", "").
SpreadConstraint(1, "zone", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
SpreadConstraint(1, "node", hardSpread, st.MakeLabelSelector().Exists("bar").Obj()).
Obj(),
nodes: []*v1.Node{
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
st.MakeNode().Name("node-x").Label("zone", "zone2").Label("node", "node-x").Obj(),
st.MakeNode().Name("node-y").Label("zone", "zone2").Label("node", "node-y").Obj(),
},
existingPods: []*v1.Pod{
st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
st.MakePod().Name("p-x1").Node("node-x").Label("bar", "").Obj(),
st.MakePod().Name("p-y1").Node("node-y").Label("bar", "").Obj(),
},
fits: map[string]bool{
"node-a": false,
"node-b": false,
"node-x": false,
"node-y": false,
},
},
{
// 1. to fulfil "zone" constraint, incoming pod can be placed on zone1 (node-a or node-b)
// 2. to fulfil "node" constraint, incoming pod can be placed on node-b or node-x
// intersection of (1) and (2) returns node-b
name: "constraints hold different labelSelectors, spreads = [2/3, 1/0/0/1]",
pod: st.MakePod().Name("p").Label("foo", "").Label("bar", "").
SpreadConstraint(1, "zone", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
SpreadConstraint(1, "node", hardSpread, st.MakeLabelSelector().Exists("bar").Obj()).
@ -5373,7 +5429,6 @@ func TestEvenPodsSpreadPredicate_MultipleConstraints(t *testing.T) {
existingPods: []*v1.Pod{
st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
st.MakePod().Name("p-a2").Node("node-a").Label("foo", "").Label("bar", "").Obj(),
st.MakePod().Name("p-b1").Node("node-b").Label("foo", "").Obj(),
st.MakePod().Name("p-y1").Node("node-y").Label("foo", "").Obj(),
st.MakePod().Name("p-y2").Node("node-y").Label("foo", "").Label("bar", "").Obj(),
st.MakePod().Name("p-y3").Node("node-y").Label("foo", "").Obj(),
@ -5381,7 +5436,34 @@ func TestEvenPodsSpreadPredicate_MultipleConstraints(t *testing.T) {
fits: map[string]bool{
"node-a": false,
"node-b": true,
"node-x": true,
"node-x": false,
"node-y": false,
},
},
{
// 1. pod doesn't match itself on "zone" constraint, so it can be put onto any zone
// 2. to fulfil "node" constraint, incoming pod can be placed on node-a or node-b
// intersection of (1) and (2) returns node-a and node-b
name: "constraints hold different labelSelectors but pod doesn't match itself on 'zone' constraint",
pod: st.MakePod().Name("p").Label("bar", "").
SpreadConstraint(1, "zone", hardSpread, st.MakeLabelSelector().Exists("foo").Obj()).
SpreadConstraint(1, "node", hardSpread, st.MakeLabelSelector().Exists("bar").Obj()).
Obj(),
nodes: []*v1.Node{
st.MakeNode().Name("node-a").Label("zone", "zone1").Label("node", "node-a").Obj(),
st.MakeNode().Name("node-b").Label("zone", "zone1").Label("node", "node-b").Obj(),
st.MakeNode().Name("node-x").Label("zone", "zone2").Label("node", "node-x").Obj(),
st.MakeNode().Name("node-y").Label("zone", "zone2").Label("node", "node-y").Obj(),
},
existingPods: []*v1.Pod{
st.MakePod().Name("p-a1").Node("node-a").Label("foo", "").Obj(),
st.MakePod().Name("p-x1").Node("node-x").Label("bar", "").Obj(),
st.MakePod().Name("p-y1").Node("node-y").Label("bar", "").Obj(),
},
fits: map[string]bool{
"node-a": true,
"node-b": true,
"node-x": false,
"node-y": false,
},
},
@ -5393,7 +5475,7 @@ func TestEvenPodsSpreadPredicate_MultipleConstraints(t *testing.T) {
for _, node := range tt.nodes {
fits, _, _ := EvenPodsSpreadPredicate(tt.pod, meta, nodeInfoMap[node.Name])
if fits != tt.fits[node.Name] {
t.Errorf("[%s]: expected %v got %v", node.Name, tt.fits, fits)
t.Errorf("[%s]: expected %v got %v", node.Name, tt.fits[node.Name], fits)
}
}
})