HDFS集群系统的状况查看命令的返回情况

[root@Master sbin]# hdfs dfsadmin -report

Java HotSpot(TM) Server VM warning: You have loaded library /usr/hadoop/lib/native/libhadoop.so.1.0.0 which might have disabled stack guard. The VM will try to fix the stack guard now.

It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.

16/03/27 18:25:39 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

Configured Capacity: 303552073728 (282.70 GB)   #使用已配置容量

Present Capacity: 275732979712 (256.80 GB)    #当前容量

DFS Remaining: 275732905984 (256.80 GB)   #DFS剩余的容量

DFS Used: 73728 (72 KB)   #DFS已使用容量

DFS Used%: 0.00%  #DFS已经使用的比率

Under replicated blocks: 0  #处于复制下的块

Blocks with corrupt replicas: 0  #故障副本的块

Missing blocks: 0  #丢失的块

-------------------------------------------------

Live datanodes (3):#存活的数据节点datanode数量

Name: 10.114.51.133:50010 (Salve1.Hadoop)#数据节点IP地址和端口

Hostname: Salve1.Hadoop  #数据节点的主机名

Decommission Status : Normal #在/退役状态

Configured Capacity: 101184024576 (94.23 GB)#已配置的容量

DFS Used: 24576 (24 KB)  #使用的DFS

Non DFS Used: 9244323840 (8.61 GB)#非DFS使用的

DFS Remaining: 91939676160 (85.63 GB)#DFS剩余

DFS Used%: 0.00%   #DFS已经使用的比率

DFS Remaining%: 90.86%  #DFS剩余的比率

Configured Cache Capacity: 0 (0 B) #配置的缓存容量

Cache Used: 0 (0 B) #已经使用的缓存容量

Cache Remaining: 0 (0 B)#剩余的缓存容量

Cache Used%: 100.00%#已经使用缓存的的比率

Cache Remaining%: 0.00%#剩余的缓存的比率

Xceivers: 1

Last contact: Sun Mar 27 18:25:39 PDT 2016#最后通信的时间

Name: 10.114.51.134:50010 (Salve2.Hadoop)

Hostname: Salve2.Hadoop

Decommission Status : Normal

Configured Capacity: 101184024576 (94.23 GB)

DFS Used: 24576 (24 KB)

Non DFS Used: 9287442432 (8.65 GB)

DFS Remaining: 91896557568 (85.59 GB)

DFS Used%: 0.00%

DFS Remaining%: 90.82%

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: 1

Last contact: Sun Mar 27 18:25:38 PDT 2016

Name: 10.114.51.135:50010 (Salve3.Hadoop)

Hostname: Salve3.Hadoop

Decommission Status : Normal

Configured Capacity: 101184024576 (94.23 GB)

DFS Used: 24576 (24 KB)

Non DFS Used: 9287327744 (8.65 GB)

DFS Remaining: 91896672256 (85.59 GB)

DFS Used%: 0.00%

DFS Remaining%: 90.82%

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: 1

Last contact: Sun Mar 27 18:25:40 PDT 2016

[root@Master sbin]#