public Map<DiskId, List<ReplicaId>> getDiskToReplicaMap() {
      List<? extends ReplicaId> replicas = clusterMap.getReplicaIds(localNode);
      Map<DiskId, List<ReplicaId>> diskToReplicas = new HashMap<>();
      for (ReplicaId replica : replicas) {
        diskToReplicas.computeIfAbsent(replica.getDiskId(), disk -> new ArrayList<>()).add(replica);
      }
      return diskToReplicas;
    }
Get the disk to replica map for the local host
@return
ambry-store/src/test/java/com/github/ambry/store/StorageManagerTest.java