@Override
  public Set<PersistentMemberID> getMissingMembers() {
    if (recovering) {
      return super.getMissingMembers();
    }
    Set<PersistentMemberID> offlineMembers = getPersistedMembers();
    offlineMembers.removeAll(cacheDistributionAdvisor.advisePersistentMembers().values());
    return offlineMembers;
  }
Wait for there to be initialized copies of this bucket. Get the latest membership view from
those copies.
geode-core/src/main/java/org/apache/geode/internal/cache/BucketPersistenceAdvisor.java