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From Srinivas Surasani <vas...@gmail.com>
Subject Re: Does tunning requires re-formatting Namenode ?
Date Mon, 09 Jan 2012 05:54:55 GMT
Hi Praveenesh,

You just need to restart the hadoop services. Reformatting the namenode
causes the lose of metadata and there by loss of data residing in datanodes.

Regards,
Srinivas,
Cloudwick Technologies.

On Mon, Jan 9, 2012 at 12:26 AM, praveenesh kumar <praveenesh@gmail.com>wrote:

> Hey Guys,
>
> Do I need to format the namenode again if I am changing some HDFS
> configurations like blocksize, checksum, compression codec etc or is there
> any other way to enforce these new changes in the present cluster setup ?
>
> Thanks,
> Praveenesh
>

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