@Override
 public void deleteBlockPool(String bpid, boolean force) throws IOException {
   DeleteBlockPoolRequestProto req =
       DeleteBlockPoolRequestProto.newBuilder().setBlockPool(bpid).setForce(force).build();
   try {
     rpcProxy.deleteBlockPool(NULL_CONTROLLER, req);
   } catch (ServiceException e) {
     throw ProtobufHelper.getRemoteException(e);
   }
 }