cannot reschedule when propagationpolicy changed

[merryzhou]

What happened:

1. two clusters: member1 and member2, both in ready status
2. a deployment with 2 replicas, and the propagationpolicy spec is:

spec:
  placement:
    clusterAffinity:
      clusterNames:
      - member1
    replicaScheduling:
      replicaDivisionPreference: Weighted
      replicaSchedulingType: Divided
      weightPreference:
        dynamicWeight: AvailableReplicas

3. wait pods of deployment deployed to member1. then update propagationpolicy to:

spec:
  placement:
    clusterAffinity:
      clusterNames:
      - member2                               # this line changed
    replicaScheduling:
      replicaDivisionPreference: Weighted
      replicaSchedulingType: Divided
      weightPreference:
        dynamicWeight: AvailableReplicas

i hope the deployment can be moved to member2 cluster, but nothing happend.
i think the problem may be here: https://github.com/karmada-io/karmada/blob/master/pkg/scheduler/core/division_algorithm.go#L36

Accoding to this logic, in the above case, assignedReplicas == spec.Replicas ==> the target clusters not changed ==> no need to reschedule

Environment:

• Karmada version: v1.0.1
• kubectl-karmada or karmadactl version (the result of kubectl-karmada version or karmadactl version):
• Others:

[dddddai]

I've just tested it

/assign

[RainbowMango]

@Garrybest @huone1

[huone1]

it is resolved in PR #1383

[dddddai]

Yeah I just took a look at #1383 and it should work

[RainbowMango]

/assign @huone1