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From anil gupta <anilg...@buffalo.edu>
Subject Re: Adding nodes
Date Fri, 02 Mar 2012 01:42:26 GMT
Whatever Joey said is correct for Cloudera's distribution. For same, I am
not confident about other distribution as i haven't tried them.

Thanks,
Anil

On Thu, Mar 1, 2012 at 5:10 PM, Raj Vishwanathan <rajvish@yahoo.com> wrote:

> The master and slave files, if I remember correctly are used to start the
> correct daemons on the correct nodes from the master node.
>
>
> Raj
>
>
> >________________________________
> > From: Joey Echeverria <joey@cloudera.com>
> >To: "common-user@hadoop.apache.org" <common-user@hadoop.apache.org>
> >Cc: "common-user@hadoop.apache.org" <common-user@hadoop.apache.org>
> >Sent: Thursday, March 1, 2012 4:57 PM
> >Subject: Re: Adding nodes
> >
> >Not quite. Datanodes get the namenode host from fs.defalt.name in
> core-site.xml. Task trackers find the job tracker from the
> mapred.job.tracker setting in mapred-site.xml.
> >
> >Sent from my iPhone
> >
> >On Mar 1, 2012, at 18:49, Mohit Anchlia <mohitanchlia@gmail.com> wrote:
> >
> >> On Thu, Mar 1, 2012 at 4:46 PM, Joey Echeverria <joey@cloudera.com>
> wrote:
> >>
> >>> You only have to refresh nodes if you're making use of an allows file.
> >>>
> >>> Thanks does it mean that when tasktracker/datanode starts up it
> >> communicates with namenode using master file?
> >>
> >> Sent from my iPhone
> >>>
> >>> On Mar 1, 2012, at 18:29, Mohit Anchlia <mohitanchlia@gmail.com>
> wrote:
> >>>
> >>>> Is this the right procedure to add nodes? I took some from hadoop wiki
> >>> FAQ:
> >>>>
> >>>> http://wiki.apache.org/hadoop/FAQ
> >>>>
> >>>> 1. Update conf/slave
> >>>> 2. on the slave nodes start datanode and tasktracker
> >>>> 3. hadoop balancer
> >>>>
> >>>> Do I also need to run dfsadmin -refreshnodes?
> >>>
> >
> >
> >
>



-- 
Thanks & Regards,
Anil Gupta

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