@Override
  public void setClientInfo(String name, String value) throws SQLClientInfoException {
    writeConnection.getUnderlyingConnecton().setClientInfo(name, value);
    for (NodeConnection conn : readConnections) {
      conn.getUnderlyingConnecton().setClientInfo(name, value);
    }
  }
The implementation of {@link Connection} in cluster test.
integration-test/src/main/java/org/apache/iotdb/itbase/runtime/ClusterTestConnection.java