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From jason hadoop <jason.had...@gmail.com>
Subject Re: Storing data-node content to other machine
Date Mon, 27 Apr 2009 07:49:32 GMT
There is no requirement that your hdfs and mapred clusters share an
installation directory, it is just done that way because it is simple and
most people have a datanode and tasktracker on each slave node.

Simply have 2 configuration directories on your cluster machines, and us the
bin/start-dfs.sh script in one, and the bin/start-mapred.sh script in the
other, and maintain different slaves files in the two directories.

You will loose the benefit of data locality for your tasktrackers which do
not reside on the datanode machines.

On Sun, Apr 26, 2009 at 10:06 PM, Vishal Ghawate <
vishal_ghawate@persistent.co.in> wrote:

> Hi,
> I want to store the contents of all the client machine(datanode)of hadoop
> cluster to centralized machine
>  with high storage capacity.so that tasktracker will be on the client
> machine but the contents are stored on the
> centralized machine.
>                Can anybody help me on this please.
>
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-- 
Alpha Chapters of my book on Hadoop are available
http://www.apress.com/book/view/9781430219422

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