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Posted to common-user@hadoop.apache.org by Raul Viudez <ra...@teledetection.fr> on 2010/05/20 14:34:20 UTC

Datanode not working




Hi!!

I have a problem with the datanode slave. When i start the dfs from
namenode, everything works fine, even the slave's daemon Datanode, but the
namenode dont see it. 

The reports: 

master:/usr/lib/hadoop-0.20/logs# hadoop dfsadmin -report 
Configured Capacity: 75512578048 (70.33 GB) 
Present Capacity: 66335830016 (61.78 GB) 
DFS Remaining: 66335805440 (61.78 GB) 
DFS Used: 24576 (24 KB) 
DFS Used%: 0% 
Under replicated blocks: 0 
Blocks with corrupt replicas: 0 
Missing blocks: 0 

------------------------------------------------- 
Datanodes available: 1 (1 total, 0 dead) 

Name: 10.0.0.254:50010 
Decommission Status : Normal 
Configured Capacity: 75512578048 (70.33 GB) 
DFS Used: 24576 (24 KB) 
Non DFS Used: 9176748032 (8.55 GB) 
DFS Remaining: 66335805440(61.78 GB) 
DFS Used%: 0% 
DFS Remaining%: 87.85% 
Last contact: Thu May 20 11:10:35 CEST 2010 

But, when i start the dfs, i have an strange INFO, it says this 
2010-05-20 11:18:57,947 INFO org.apache.hadoop.ipc.Server: Error register
versionRequest 
java.lang.IllegalArgumentException: Duplicate metricsName:versionRequest 
... 

BTW the slave is a NFS diskless image of Debian. 

Thank you!!