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HBase >> mail # user >> Dynamic addition of RegionServer


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Re: Dynamic addition of RegionServer
Working and consistent hostname resolution is a requirement for running an
HBase cluster.  Usually the easiest way to do this is with DNS.  You can
also use a hosts file, but you need to make sure the hosts file includes all
cluster hosts and have a way of synchronizing it throughout the cluster.
On Tue, Sep 20, 2011 at 8:12 AM, Stuti Awasthi <[EMAIL PROTECTED]> wrote:

> Hi ,
> I was able to add region server dynamically in running cluster . But this
> happens only when hostname of new node is resolved to IP by running cluster.
> Now to achieve this I have to add new node IP and hostname in /etc/hosts
> file and rebooted the machine. Restarted the cluster and added node
> dynamically.
>
> Now since currently in Hbase it resolves only hostname and not IP is a
> drawback I see because if I want to add any regionserver dynamically  it
> must be present in my /etc/hosts file on each node and this is not always
> possible.
>
> Any suggesstions if it can be fixed?
>
> Regards
> Stuti
>
> From: Stuti Awasthi
> Sent: Tuesday, September 20, 2011 10:30 AM
> To: [EMAIL PROTECTED]
> Subject: Dynamic addition of RegionServer
>
> Hi all,
>
> I was trying to add new regionserver node dynamically to my already running
> cluster. I updated conf/regionserver file and added IP (not hostname) of new
> node and started regionserver daemon on the new node. It is started fine but
> on Hbase webUI it doesnot shows the new regionserver added.
>
> As far as I know Hbase resolve the hostname of the nodes. Now if I add
> hostname to conf/regionserver file then I will also need to update /etc/host
> and reboot the machines otherwise it will give" unkown host exception ".
>
> Am I missing something ?
>
> -Stuti
>
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