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From Fabio Souto <fsoutomo...@gmail.com>
Subject Datanodes connection issue
Date Thu, 28 Apr 2011 16:44:54 GMT
Hello,

I'm having some problems setting up my datanodes, I have a 4 node cluster (all of them are
datanodes), if I run 

sudo -u hdfs hadoop dfsadmin -report


Configured Capacity: 112231907328 (104.52 GB)
Present Capacity: 54121451520 (50.4 GB)
DFS Remaining: 54120173568 (50.4 GB)
DFS Used: 1277952 (1.22 MB)
DFS Used%: 0%
Under replicated blocks: 1
Blocks with corrupt replicas: 0
Missing blocks: 0

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

Name: <my-ip>:50010
Decommission Status : Normal
Configured Capacity: 112231907328 (104.52 GB)
DFS Used: 1277952 (1.22 MB)
Non DFS Used: 58110455808 (54.12 GB)
DFS Remaining: 54120173568(50.4 GB)
DFS Used%: 0%
DFS Remaining%: 48.22%
Last contact: Thu Apr 28 18:39:28 CEST 2011


The report only show 1 datanode! Checking the logs of the slaves I found this:


  2011-04-28 18:26:09,587 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: slave/<ip>:54310.
Already tried 9 time(s).
  2011-04-28 18:26:09,588 INFO org.apache.hadoop.ipc.RPC: Server at slave/<ip>:54310
not available yet, Zzzzz...


I don't know what to do....Should I configure passwordless ssh between the servers?

Thanks
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