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From Enis Soztutar <enis.soz.nu...@gmail.com>
Subject Re: DFS capacity
Date Tue, 18 Mar 2008 11:39:08 GMT

You can supply multiple directories as the dfs.data.dir using comma as a 
separator. This way you may use more than one partition for the datanode.

Zhu Huijun wrote:
> Hi,
> I have a question about the DFS capacity. Our cluster has 16 nodes, each has
> a 250GB hard drive. I use one node as the namenode, and other 15 as data
> nodes. However, from the webpage of http://localhost:50070, it is shown that
> each node has only 7.69 GB, and 2.75 GB remaining. I use the default
> "/tmp/hadoop-${user.name}" as the base directory (the first property in
> hadoop-default.xml). I tried in hadoop-site.xml to change this directory to
> my account directory "/home/${user.name}/hadoop", but only one node can be
> initialed as datanode, although I can see a more than 200 GB capacity for
> the node. Can anyone give some suggestion on how to make a larger space for
> DFS? Do I need an account with root authority?
> Thanks!
> Huijun Zhu

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