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From Tejas Lagvankar <t...@umbc.edu>
Subject Re: 0.20.1 Cluster Setup Problem
Date Tue, 13 Oct 2009 16:41:07 GMT
By name resolution, I assume that you mean the name mentioned in /etc/ 
hosts.  Yes, in the logs, the IP address appears in the beginning.
Correct me if I'm wrong
I will also try with using just the IP's instead of the aliases.

On Oct 13, 2009, at 12:37 PM, Kevin Sweeney wrote:

> did you verify the name resolution?
>
> On Tue, Oct 13, 2009 at 4:34 PM, Tejas Lagvankar <tej2@umbc.edu>  
> wrote:
>
> I get the same error even if i specify the port number. I have tried  
> with port numbers 54310 as well as 9000.
>
>
> Regards,
> Tejas
>
>
> On Oct 13, 2009, at 12:12 PM, Chandan Tamrakar wrote:
>
> I think you need to specify the port as well for following port
>
> <property>
> <name>fs.default.name</name>
> <value>hdfs://master_hadoop</value>
> </property>
>
>
> On Tue, Oct 13, 2009 at 7:17 AM, Tejas Lagvankar <tej2@umbc.edu>  
> wrote:
>
> Hi,
>
>
> We are trying to set up a cluster (starting with 2 machines) using  
> the new
> 0.20.1 version.
>
> On the master machine, just after the server starts, the name node  
> dies off
> with the following exception:
>
> 2009-10-13 01:22:24,740 ERROR
> org.apache.hadoop.hdfs.server.namenode.NameNode: java.io.IOException:
> Incomplete HDFS URI, no host: hdfs://master_hadoop
>      at
> org.apache.hadoop.hdfs.DistributedFileSystem.initialize 
> (DistributedFileSystem.java:78)
>      at
> org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1373)
>      at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:66)
>      at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java: 
> 1385)
>      at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:191)
>      at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:95)
>      at org.apache.hadoop.fs.Trash.<init>(Trash.java:62)
>      at
> org.apache.hadoop.hdfs.server.namenode.NameNode.startTrashEmptier 
> (NameNode.java:208)
>      at
> org.apache.hadoop.hdfs.server.namenode.NameNode.initialize 
> (NameNode.java:204)
>      at
> org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java: 
> 279)
>      at
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode 
> (NameNode.java:956)
>      at
> org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java: 
> 965)
>
> Can anyone help ?  Also can anyone send across example configuration  
> files
> for 0.20.1 if they are different than we are using ?
>
> The detail log file is attached along with.
>
>
>
>
> The configuration files are as follows:
>
> MASTER CONFIG
> ------ conf/masters -------
> master_hadoop
>
> ------ conf/slaves -------
> master_hadoop
> slave_hadoop
>
> ------ core-site.xml -------
> <configuration>
>
> <property>
> <name>fs.default.name</name>
> <value>hdfs://master_hadoop</value>
> </property>
>
> <property>
> <name>hadoop.tmp.dir</name>
> <value>/opt/hadoop-0.20.1/tmp</value>
> </property>
>
> ------ hdfs-site.xml -------
> <property>
> <name>dfs.replication</name>
> <value>2</value>
> </property>
>
>
> ------ mapred-site.xml -------
> <property>
> <name>mapred.job.tracker</name>
> <value>tejas_hadoop:9001</value>
> </property>
>
>
>
>
>
> SLAVE CONFIG
> ------ core-site.xml -------
> <property>
> <name>hadoop.tmp.dir</name>
> <value>/opt/hadoop-0.20.1/tmp/</value>
> </property>
>
>
> <property>
> <name>fs.default.name</name>
> <value>hdfs://master_hadoop</value>
> </property>
>
>
> ------ hdfs-site.xml -------
> <property>
> <name>dfs.replication</name>
> <value>2</value>
> </property>
>
> ------ mapred-site.xml -------
> <property>
> <name>mapred.job.tracker</name>
> <value>tejas_hadoop:9001</value>
> </property>
>
>
>
> Regards,
>
> Tejas Lagvankar
> meettejas@umbc.edu
> www.umbc.edu/~tej2 <http://www.umbc.edu/%7Etej2>
>
>
>
>
>
>
>
> -- 
> Chandan Tamrakar
>
> Tejas Lagvankar
> meettejas@umbc.edu
> www.umbc.edu/~tej2
>
>
>
>
>
>
>

Tejas Lagvankar
meettejas@umbc.edu
www.umbc.edu/~tej2




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