got it!

just put the option

dfs.datanode.simulateddatastorage

on your config files.

On Mon, May 16, 2011 at 9:42 AM, Thanh Do <than...@cs.wisc.edu> wrote:

> hey all,
>
> I want to run a experimental cluster
> but my machines have limited disk space capacity.
> I want each node in my cluster to have
> around 50,000 thousand blocks.
>
> I don't want to have smaller the block size
> (1K, 4K, etc).
>
> I saw SimulatedFSDataset in HDFS code base.
> Could anybody shed some light in how to use this
> in a real cluster, i.e. a cluster with everything
> the same but simulated block?
>
> any hint is appreciated.
>
> thanks a lot.
> Thanh
>

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