Its odd because the configure_cdh_hadoop.sh file actually has code in it to
launch a secondarynamenode, its just that there is no way to configure whirr
to pass in the role to the shell file.
for role in $(echo "$ROLES" | tr "," "\n"); do
case $role in
hadoop-namenode)
start_namenode
;;
hadoop-secondarynamenode)
start_hadoop_daemon secondarynamenode
;;
hadoop-jobtracker)
start_hadoop_daemon jobtracker
;;
hadoop-datanode)
start_hadoop_daemon datanode
;;
hadoop-tasktracker)
start_hadoop_daemon tasktracker
;;
esac
done
}
On Wed, Jul 13, 2011 at 2:32 PM, Andrei Savu <savu.and...@gmail.com> wrote:
> I just took a look at the source code. It seems like there is some
> code in configure scripts that can be used to start the secondary
> namenode unfortunately there is no hadoop-secondarynamenode role
> defined.
>
> So I believe it's not possible to start a Hadoop cluster that has a
> secondarynamenode.
>
> Tom have you used this in the past?
>
> -- Andrei
>
> On Wed, Jul 13, 2011 at 2:26 PM, John Conwell <j...@iamjohn.me> wrote:
> > I'm not sure what you mean by that. Let me rephrase...can I use whirr to
> > launch a cluster that has a secondarynamenode?
> >
> > On Wed, Jul 13, 2011 at 2:14 PM, Andrei Savu <savu.and...@gmail.com>
> wrote:
> >>
> >> The secondary namenode is not started by the hadoop install /
> >> configure scripts.
> >>
> >> -- Andrei Savu / andreisavu.ro
> >>
> >> On Wed, Jul 13, 2011 at 2:05 PM, John Conwell <j...@iamjohn.me> wrote:
> >> > Does whirr support secondarynamenode instances for a hadoop cluster?
> If
> >> > so,
> >> > what are the configuration parameters in the whirr config file?
> >> >
> >> > --
> >> >
> >> > Thanks,
> >> > John C
> >> >
> >
> >
> >
> > --
> >
> > Thanks,
> > John C
> >
>
--
Thanks,
John C
