HDFS执行getDatanodeReport输出信息：

Name: 192.168.101.100:50010 (192.168.101.100)Hostname: bigsrvDecommission Status : NormalConfigured Capacity: 16421093376 (15.29 GB)DFS Used: 3489792 (3.33 MB)Non DFS Used: 4074287104 (3.79 GB)DFS Remaining: 12343316480 (11.50 GB)DFS Used%: 0.02%DFS Remaining%: 75.17%Configured Cache Capacity: 0 (0 B)Cache Used: 0 (0 B)Cache Remaining: 0 (0 B)Cache Used%: 100.00%Cache Remaining%: 0.00%Xceivers: 1Last contact: Sun Sep 02 21:00:59 CST 2018