@Override
  protected String getLocalReplicaPath(RemoteReplicaInfo remoteReplicaInfo) {
    // This will let the DR advertise its replicas as "dr/" replicas to other servers
    // And prevent servers from complaining of requests from unknown peers.
    return DR_Verifier_Keyword + File.separator + super.getLocalReplicaPath(remoteReplicaInfo);
  }
Returns local replica mount path of the partition
@param remoteReplicaInfo Info about remote replica
@return Local replica mount path of the partition
ambry-replication/src/main/java/com/github/ambry/replication/BackupCheckerThread.java