when i tried to run  hdfs diskbalancer -plan $(hostname -f)   VERSION info: Hadoop 2.6.0-cdh5.14.4    i get this notice: 21/06/30 11:30:41 ERROR tools.DiskBalancerCLI: java.lang.IllegalArgumentException   then i tried write the real hostname into my command , not work and same error notice i also tried  use --plan instead of -plan , not work and same error notice i found this link  but there's no resolve solution , can somebody help me? ... View more