public void addConfigNode(TConfigNodeRegisterReq req) {
    final AddConfigNodeProcedure addConfigNodeProcedure =
        new AddConfigNodeProcedure(req.getConfigNodeLocation(), req.getVersionInfo());
    this.executor.submitProcedure(addConfigNodeProcedure);
  }
Generate an {@link AddConfigNodeProcedure}, and serially execute all the {@link
AddConfigNodeProcedure}s.
iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/manager/ProcedureManager.java