class KeyValueHandler extends Handler {

  @VisibleForTesting
  public VolumeChoosingPolicy getVolumeChoosingPolicyForTesting() {
    return volumeChoosingPolicy;
  }

  public  KeyValueHandler(ConfigurationSource config, String datanodeId,
      ContainerSet contSet, VolumeSet volSet, ContainerMetrics metrics,
      Consumer<ContainerReplicaProto> icrSender);

}