private String getConfigReceiverId() {
    if (Objects.isNull(configReceiverId.get())) {
      configReceiverId.set(
          IoTDBDescriptor.getInstance().getConfig().getDataNodeId()
              + "_"
              + PipeDataNodeAgent.runtime().getRebootTimes()
              + "_"
              + CONFIG_RECEIVER_ID_GENERATOR.incrementAndGet());
    }
    return configReceiverId.get();
  }
Used to identify the sender client
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/pipe/receiver/protocol/thrift/IoTDBDataNodeReceiver.java