FAQ
Running on namenode(hostname: loanps4d):
:/opt/hadoop-install/hadoop-0.20.2/bin:59 > hadoop dfsadmin -report
Configured Capacity: 0 (0 KB)
Present Capacity: 3072 (3 KB)
DFS Remaining: 0 (0 KB)
DFS Used: 3072 (3 KB)
DFS Used%: 100%
Under replicated blocks: 0
Blocks with corrupt replicas: 0
Missing blocks: 0

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

Name: 169.193.181.213:50010
Decommission Status : Normal
Configured Capacity: 0 (0 KB)
DFS Used: 3072 (3 KB)
Non DFS Used: 0 (0 KB)
DFS Remaining: 0(0 KB)
DFS Used%: 100%
DFS Remaining%: 0%
Last contact: Tue May 31 11:30:37 EDT 2011

Datanode(hostname: loanps3d) log:
:/opt/hadoop-install/hadoop-0.20.2/logs:60 > tail hadoop-cfadm-datanode-loanps3d.log
2011-05-31 11:29:04,076 INFO org.apache.hadoop.ipc.Server: IPC Server listener on 50020: starting
2011-05-31 11:29:04,086 INFO org.apache.hadoop.ipc.Server: IPC Server handler 0 on 50020: starting
2011-05-31 11:29:04,086 INFO org.apache.hadoop.ipc.Server: IPC Server handler 1 on 50020: starting
2011-05-31 11:29:04,087 INFO org.apache.hadoop.ipc.Server: IPC Server handler 2 on 50020: starting
2011-05-31 11:29:04,087 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: dnRegistration = DatanodeRegistration(loanps3d:50010, storageID=, infoPort=50075, ipcPort=50020)
2011-05-31 11:29:04,142 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: New storage id DS-1373813798-169.193.181.213-50010-1306855744095 is assigned to data-node 169.193.181.213:50010
2011-05-31 11:29:04,145 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: DatanodeRegistration(169.193.181.213:50010, storageID=DS-1373813798-169.193.181.213-50010-1306855744095, infoPort=50075, ipcPort=50020)In DataNode.run, data = FSDataset{dirpath='/opt/hadoop-install/hadoop-0.20.2/hadoop-data/current'}
2011-05-31 11:29:04,146 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: using BLOCKREPORT_INTERVAL of 3600000msec Initial delay: 0msec
2011-05-31 11:29:04,679 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: BlockReport of 0 blocks got processed in 28 msecs
2011-05-31 11:29:04,683 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Starting Periodic block scanner.


-----Original Message-----
From: Harsh J
Sent: Tuesday, May 31, 2011 10:23 AM
To: hdfs-user@hadoop.apache.org
Subject: Re: Unable to start hadoop-0.20.2 but able to start hadoop-0.20.203 cluster

Xu,

Please post the output of `hadoop dfsadmin -report` and attach the
tail of a started DN's log?
On Tue, May 31, 2011 at 7:44 PM, Xu, Richard wrote:
2. Also, Configured Capacity is 0, cannot put any file to HDFS.
This might easily be the cause. I'm not sure if its a Solaris thing
that can lead to this though.
3. in datanode server, no error in logs, but tasktracker logs has the following suspicious thing:
I don't see any suspicious log message in what you'd posted. Anyhow,
the TT does not matter here.

--
Harsh J

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