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From Doss_IPH <d...@intellipowerhive.com>
Subject Re: About Hadoop pseudo distribution
Date Wed, 02 Dec 2009 08:30:41 GMT

Hi 
Hadoop pseudo distribution runs five java processors which are given below 
  1. namenode, 
  2. secondarynamenode
  3. datanode
  4 jobtracker
  5. tasktracker

As you know namenode, secondarynamenode, datanode processors are for HDFS
and jobtracker ,tastktracker are for MR (Map Reduce).


kvorion wrote:
> 
> Hi All,
> 
> I have been trying to set up a hadoop cluster on a number of machines, a
> few of which are multicore machines. I have been wondering whether the
> hadoop pseudo distribution is something that can help me take advantage of
> the multiple cores on my machines. All the tutorials say that the pseudo
> distribution mode lets you start each daemon in a separate java process. I
> have the following configuration settings for hadoop-site.xml:
> 
> <property>
>   <name>fs.default.name</name>
>   <value>hdfs://athena:9000</value>
> </property>
> 
> <property>
>   <name>mapred.job.tracker</name>
>   <value>athena:9001</value>
> </property>
> 
> <property>
>   <name>dfs.replication</name>
>   <value>2</value>
> </property>
> 
> I am not sure if this is really running in the pseudo-distribution mode.
> Are there any indicators or outputs that confirm what mode you are running
> in?
> 
> 
> 

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