hduser@namenode1:/usr/local/hadoop/logs$ hdfs dfsadmin -reportConfigured Capacity: 30302740480 (28.22 GB)Present Capacity: 18599096320 (17.32 GB)DFS Remaining: 18599047168 (17.32 GB)DFS Used: 49152 (48 KB)DFS Used%: 0.00%Under replicated blocks: 0Blocks with corrupt replicas: 0Missing blocks: 0————————————————-Datanodes available: 2 (2 total, 0 dead)Live datanodes:Name: 172.23.215.61:50010 (datanode1)Hostname: datanode1Decommission Status : NormalConfigured Capacity: 15151370240 (14.11 GB)DFS Used: 24576 (24 KB)Non DFS Used: 5851353088 (5.45 GB)DFS Remaining: 9299992576 (8.66 GB)DFS Used%: 0.00%DFS Remaining%: 61.38%Last contact: Wed Mar 05 16:56:09 CST 2014Name: 172.23.214.47:50010 (namenode2)Hostname: namenode2Decommission Status : NormalConfigured Capacity: 15151370240 (14.11 GB)DFS Used: 24576 (24 KB)Non DFS Used: 5852291072 (5.45 GB)DFS Remaining: 9299054592 (8.66 GB)DFS Used%: 0.00%DFS Remaining%: 61.37%Last contact: Wed Mar 05 16:56:08 CST 2014
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，莫找借口失败，只找理由成功。(不为失败找理由，要为成功找方法)
