Mailing-List: contact core-user-help@hadoop.apache.org; run by ezmlm
Precedence: bulk
Reply-To: core-user@hadoop.apache.org
Received-SPF: pass (athena.apache.org: domain of sridhar.raman@gmail.com
 designates 66.249.82.234 as permitted sender)
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references;
        b=ILnQR8lj3nXpBBIMKzuNAvZc4F3/7rCevKBw0q1PT1gETgaRwvLa+4MuHuQSQpj7vgv3RQoh/5NXUAC03Mh84irRMEp/UG7pquTuWEh4++n8ziazRamn8MAh451TjDLGJX5o4aaLqi6/898KrrSAbhOLgEWSP5skNiJjwPnqWA0=
Message-ID: <227621ad0804230139l4d7758eck636192b8acdad67c@mail.gmail.com>
Date: Wed, 23 Apr 2008 14:09:59 +0530
From: "Sridhar Raman" <sridhar.raman@gmail.com>
To: core-user@hadoop.apache.org
Subject: Re: User accounts in Master and Slaves
In-Reply-To: <e01b80590804230013s4e72bff2wc9ee774a4754884d@mail.gmail.com>
MIME-Version: 1.0
Content-Type: multipart/alternative;
	boundary="----=_Part_4321_20661788.1208939999130"
References: <227621ad0804230003j7b670c11v2838b03f35b6834b@mail.gmail.com>
	 <e01b80590804230013s4e72bff2wc9ee774a4754884d@mail.gmail.com>

------=_Part_4321_20661788.1208939999130
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

Ok, what about the issue regarding the users?  Do all the machines need to
be under the same user?

On Wed, Apr 23, 2008 at 12:43 PM, Harish Mallipeddi <
harish.mallipeddi@gmail.com> wrote:

> On Wed, Apr 23, 2008 at 3:03 PM, Sridhar Raman <sridhar.raman@gmail.com>
> wrote:
>
> > After trying out Hadoop in a single machine, I decided to run a
> MapReduce
> > across multiple machines.  This is the approach I followed:
> > 1 Master
> > 1 Slave
> >
> > (A doubt here:  Can my Master also be used to execute the Map/Reduce
> > functions?)
> >
>
> If you add the master node to the list of slaves (conf/slaves), then the
> master node run will also run a TaskTracker.
>
>
> >
> > To do this, I set up the masters and slaves files in the conf directory.
> > Following the instructions in this page -
> > http://hadoop.apache.org/core/docs/current/cluster_setup.html, I had set
> > up
> > sshd in both the machines, and was able to ssh from one to the other.
> >
> > I tried to run bin/start-dfs.sh.  Unfortunately, this asked for a
> password
> > for user1@slave, while in slave, there was only user2.  While in master,
> > user1 was the logged on user.  How do I resolve this?  Should the user
> > accounts be present in all the machines?  Or can I specify this
> somewhere?
> >
>
>
>
> --
> Harish Mallipeddi
> circos.com : poundbang.in/blog/
>

------=_Part_4321_20661788.1208939999130--