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From "Ilya Vishnevsky" <Ilya.Vishnev...@e-legion.com>
Subject RE: Trying to run nutch: no address associated with name
Date Thu, 12 Jul 2007 14:20:21 GMT
I've made sure. I can perform both operations.


-----Original Message-----
From: Nguyen Kien Trung [mailto:trung.n.k@gmail.com] 
Sent: Thursday, July 12, 2007 6:05 PM
To: hadoop-user@lucene.apache.org
Subject: Re: Trying to run nutch: no address associated with name

Hi there,
Just make sure you can ping localhost and you can ssh localhost without 
being asked the password

Ilya Vishnevsky wrote:
> Hello! I'm trying to run nutch on two computers. Here is content of my
> "slaves" file:
>
> localhost
> morpheus
>
> When I type bin/start-al.sh, I get the next output:
>
> starting namenode, logging to
> /nutch/search/logs/hadoop-nutch-namenode-Thanatos.out
> localhost
> : ssh: localhost
> : no address associated with name
> morpheus: starting datanode, logging to
> /nutch/search/logs/hadoop-nutch-datanode-morpheus.out
> starting jobtracker, logging to
> /nutch/search/logs/hadoop-nutch-jobtracker-Thanatos.out
> localhost
> : ssh: localhost
> : no address associated with name
> morpheus: starting tasktracker, logging to
> /nutch/search/logs/hadoop-nutch-tasktracker-morpheus.out
>
>
> It seems like it for some reason nutch can't run datanode and
> tasktracker on localhost (thanatos).
>
> At the same time if I have only localhost in my "slaves" file, I get
the
> following output:
>
> starting namenode, logging to
> /nutch/search/logs/hadoop-nutch-namenode-Thanatos.out
> localhost: starting datanode, logging to
> /nutch/search/logs/hadoop-nutch-datanode-Thanatos.out
> starting jobtracker, logging to
> /nutch/search/logs/hadoop-nutch-jobtracker-Thanatos.out
> localhost: starting tasktracker, logging to
> /nutch/search/logs/hadoop-nutch-tasktracker-Thanatos.out
>
> I.e. all nodes and trackers are run properly.
> Why can it be?
>
> Here is content of my hadoop-site.xml:
>
>
> <?xml version="1.0"?>
> <?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
>
> <!-- Put site-specific property overrides in this file. -->
>
> <configuration>
>
> <property>
>   <name>fs.default.name</name>
>   <value>localhost:50010</value>
>   <description>
>     The name of the default file system. Either the literal string 
>     "local" or a host:port for NDFS.
>   </description>
> </property>
>
> <property>
>   <name>mapred.job.tracker</name>
>   <value>local</value>
>   <description>
>     The host and port that the MapReduce job tracker runs at. If 
>     "local", then jobs are run in-process as a single map and 
>     reduce task.
>   </description>
> </property>
>
> <property> 
>   <name>mapred.map.tasks</name>
>   <value>2</value>
>   <description>
>     define mapred.map tasks to be number of slave hosts
>   </description> 
> </property> 
>
> <property> 
>   <name>mapred.reduce.tasks</name>
>   <value>2</value>
>   <description>
>     define mapred.reduce tasks to be number of slave hosts
>   </description> 
> </property> 
>
> <property>
>   <name>dfs.name.dir</name>
>   <value>c:/cygwin/nutch/filesystem/name</value>
> </property>
>
> <property>
>   <name>dfs.data.dir</name>
>   <value>c:/cygwin/nutch/filesystem/data</value>
> </property>
>
> <property>
>   <name>mapred.system.dir</name>
>   <value>/nutch/filesystem/mapreduce/system</value>
> </property>
>
> <property>
>   <name>mapred.local.dir</name>
>   <value>/nutch/filesystem/mapreduce/local</value>
> </property>
>
> <property>
>   <name>dfs.replication</name>
>   <value>1</value>
> </property>
>
> </configuration>
>
>   


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