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From Sanjay Radia <sra...@yahoo-inc.com>
Subject Re: multiple datanodes on single node cluster
Date Mon, 02 Mar 2009 06:10:38 GMT

On Feb 25, 2009, at 11:55 PM, lohit wrote:

> It is possible to run multiple datanodes.
> You would have to have separate conf file for each datanode,  
> basically you need to have different datanode address  
> (dfs.datanode.address and related)
> and different storage directories dfs.data.dir. Have different  
> configs and start each datanode instance with different conf  
> directory containing different conf file
> Lohit
>
>
>
> ----- Original Message ----
> From: Ajit Ratnaparkhi <ajit.ratnaparkhi@gmail.com>
> To: core-dev@hadoop.apache.org
> Sent: Wednesday, February 25, 2009 11:04:15 PM
> Subject: multiple datanodes on single node cluster
>
> Hi all,
>
> Is it possible to run multiple datanode instances on single node  
> hadoop
> cluster?
>
> How to do that?
>
> thanks,
> -Ajit
>
>
The minicluster also allows multiple data nodes in the same JVM.
This normally used only for testing. See DataNodeCluster under src/test.
This is probably not what you are looking for but I thought I would  
mention it.


sanjay
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