public String[] getPipeReceiverFileDirs() {
    return (Objects.isNull(this.pipeReceiverFileDirs) || this.pipeReceiverFileDirs.length == 0)
        ? new String[] {systemDir + File.separator + "pipe" + File.separator + "receiver"}
        : this.pipeReceiverFileDirs;
  }
if the folders are relative paths, add IOTDB_DATA_HOME as the path prefix
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/conf/IoTDBConfig.java