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From: "Mahadev Konar" <mahadev@yahoo-inc.com>
To: <hadoop-user@lucene.apache.org>
Subject: RE: Formatting the Namenode
Date: Wed, 11 Oct 2006 09:41:22 -0700
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Hi Howard, 
  The formatting of the filesystem is with respect to Hadoop File System. It
does not involve formatting your local file system. All you need to do is 

bin/hadoop namenode -format.

This command just creates some files for the namenode in the directory
specified as dfs.name.dir. Also, Hadoop does work on Windows. You will need
to install cygwin. 

Regards
Mahadev

> -----Original Message-----
> From: howard chen [mailto:howachen@gmail.com]
> Sent: Wednesday, October 11, 2006 9:34 AM
> To: hadoop-user@lucene.apache.org
> Subject: Formatting the Namenode
> 
> hello all,
> 
> from the page:
> 
> http://wiki.apache.org/lucene-hadoop/GettingStartedWithHadoop
> 
> The first step to starting up your Hadoop installation is formatting
> the file system. You need to do this the first time you set up a
> Hadoop installation. Do not format a running file system, this will
> cause all your data to be erased. To format the file system, run the
> command:
> 
> i am confused by the instruction there...is that mean
> 
> 1. I need to make an empty partition for hadoop first, without formatting
> it?
> 
> 2. Is that mean haoop will only run on Linux as the file system can't
> be supported by windows?
> 
> 3. are there any complete step by step tutorial for newbie?
> 
> thanks.