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From Mark Kerzner <markkerz...@gmail.com>
Subject Re: cannot connect from slaves
Date Fri, 14 Jan 2011 04:51:02 GMT
probably that's what it was - since with the network change it finally
connects

On Thu, Jan 13, 2011 at 10:44 PM, rishi pathak <mailmaverick666@gmail.com>wrote:

> Hello,
>                It can be a firewall issue. Try telnet from master and from
> slaves and see:
>
> (master)# telnet master 8020
>
> and
> (slave)# telnet master 8020
>
>
> On Fri, Jan 14, 2011 at 8:19 AM, Mark Kerzner <markkerzner@gmail.com>
> wrote:
>
> > I did this, and tried both ways:
> >
> > hadoop fs -ls /
> > 11/01/14 02:45:25 INFO ipc.Client: Retrying connect to server: /
> > 10.113.118.244:8020. Already tried 0 time(s).
> > 11/01/14 02:45:29 INFO ipc.Client: Retrying connect to server: /
> > 10.113.118.244:8020. Already tried 1 time(s).
> >
> > and
> >
> > hadoop fs -ls hdfs://10.113.118.244/
> > 11/01/14 02:48:56 INFO ipc.Client: Retrying connect to server: /
> > 10.113.118.244:8020. Already tried 0 time(s).
> >
> > I am suspecting the port 8020 - how do I test it outside of hadoop?
> >
> > Thank you,
> > Mark
> >
> > On Thu, Jan 13, 2011 at 8:29 PM, George Datskos <
> > george.datskos@jp.fujitsu.com> wrote:
> >
> > > Hello
> > >
> > >
> > > On 2011/01/14 10:02, Mark Kerzner wrote:
> > >
> > >> hadoop fs -ls hdfs://master-url/
> > >>
> > >> works locally on the master, but cannot connect from any of the
> slaves.
> > >>
> > >
> > > Make sure to replicate conf/core-site.xml to each of the slaves.  The
> > > fs.default.name property should point to the master node.  That way
> the
> > > slaves know how to reach the NameNode.
> > >
> > >  <name>fs.default.name</name>
> > >  <value>hdfs://master:8020</value>
> > >
> > >
> > > (adjust the host name and port as necessary)
> > >
> > >
> > > George
> > >
> > >
> >
>
>
>
> --
> Regards--
> Rishi Pathak
> National PARAM Supercomputing Facility
> Center for Development of Advanced Computing(C-DAC)
> Pune University Campus,Ganesh Khind Road
> Pune-Maharastra
>

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