maxSkew: 1
            minDomains: 5
            nodeAffinityPolicy: nodeAffinityPolicyValue
            nodeTaintsPolicy: nodeTaintsPolicyValue
            topologyKey: topologyKeyValue
            whenUnsatisfiable: whenUnsatisfiableValue
          volumes:
          - awsElasticBlockStore:
              fsType: fsTypeValue
              partition: 3
              readOnly: true
              volumeID: volumeIDValue

        maxSkew: 1
        minDomains: 5
        nodeAffinityPolicy: nodeAffinityPolicyValue
        nodeTaintsPolicy: nodeTaintsPolicyValue
        topologyKey: topologyKeyValue
        whenUnsatisfiable: whenUnsatisfiableValue
      volumes:
      - awsElasticBlockStore:
          fsType: fsTypeValue
          partition: 3
          readOnly: true
          volumeID: volumeIDValue
        azureDisk:

        maxSkew: 1
        minDomains: 5
        nodeAffinityPolicy: nodeAffinityPolicyValue
        nodeTaintsPolicy: nodeTaintsPolicyValue
        topologyKey: topologyKeyValue
        whenUnsatisfiable: whenUnsatisfiableValue
      volumes:
      - awsElasticBlockStore:
          fsType: fsTypeValue
          partition: 3
          readOnly: true
          volumeID: volumeIDValue
        azureDisk:

			{MaxSkew: 1, TopologyKey: "k8s.io/zone", WhenUnsatisfiable: core.DoNotSchedule},
			{MaxSkew: 2, TopologyKey: "k8s.io/node", WhenUnsatisfiable: core.ScheduleAnyway},
		},
		wantFieldErrors: field.ErrorList{},
	}, {
		name: "multiple constraints missing TopologyKey on partial ones",
		constraints: []core.TopologySpreadConstraint{
			{MaxSkew: 1, WhenUnsatisfiable: core.ScheduleAnyway},

			defaultConstraints: []v1.TopologySpreadConstraint{
				{MaxSkew: 3, TopologyKey: "node", WhenUnsatisfiable: v1.DoNotSchedule},
				{MaxSkew: 2, TopologyKey: "node", WhenUnsatisfiable: v1.ScheduleAnyway},
				{MaxSkew: 5, TopologyKey: "rack", WhenUnsatisfiable: v1.DoNotSchedule},
			},
			objs: []runtime.Object{
				&v1.Service{Spec: v1.ServiceSpec{Selector: map[string]string{"foo": "bar"}}},

		}
		if err := ValidateWhenUnsatisfiable(subFldPath.Child("whenUnsatisfiable"), constraint.WhenUnsatisfiable); err != nil {
			allErrs = append(allErrs, err)
		}
		// tuple {topologyKey, whenUnsatisfiable} denotes one kind of spread constraint
		if err := ValidateSpreadConstraintNotRepeat(subFldPath.Child("{topologyKey, whenUnsatisfiable}"), constraint, constraints[i+1:]); err != nil {
			allErrs = append(allErrs, err)

  // +-------+-------+-------+
  // If WhenUnsatisfiable is set to DoNotSchedule, incoming pod can only be scheduled
  // to zone2(zone3) to become 3/2/1(3/1/2) as ActualSkew(2-1) on zone2(zone3) satisfies
  // MaxSkew(1). In other words, the cluster can still be imbalanced, but scheduler
  // won't make it *more* imbalanced.
  // It's a required field.
  optional string whenUnsatisfiable = 3;

	c := v1.TopologySpreadConstraint{
		MaxSkew:            int32(maxSkew),
		TopologyKey:        tpKey,
		WhenUnsatisfiable:  mode,
		LabelSelector:      selector,
		MinDomains:         minDomains,
		NodeAffinityPolicy: nodeAffinityPolicy,
		NodeTaintsPolicy:   nodeTaintsPolicy,
		MatchLabelKeys:     matchLabelKeys,
	}

	// +-------+-------+-------+
	// If WhenUnsatisfiable is set to DoNotSchedule, incoming pod can only be scheduled
	// to zone2(zone3) to become 3/2/1(3/1/2) as ActualSkew(2-1) on zone2(zone3) satisfies
	// MaxSkew(1). In other words, the cluster can still be imbalanced, but scheduler
	// won't make it *more* imbalanced.
	// It's a required field.

	// +-------+-------+-------+
	// If WhenUnsatisfiable is set to DoNotSchedule, incoming pod can only be scheduled
	// to zone2(zone3) to become 3/2/1(3/1/2) as ActualSkew(2-1) on zone2(zone3) satisfies
	// MaxSkew(1). In other words, the cluster can still be imbalanced, but scheduler
	// won't make it *more* imbalanced.
	// It's a required field.
	WhenUnsatisfiable UnsatisfiableConstraintAction