Do I really need fully-distributed mode for HBase?

[Mark Kerzner <ma...@gmail.com>]

Hi,

if I am running HBase in pseudo-distributed mode and I cannot connect to it
from other nodes, I guess, that is to be expected, right?

I mean, the browser connects to http://hbase-url:60010, but the zookeeper,
which ignored my ip and started on localhost, would give me a problem. So I
would need 3 nodes for zookeeper. And that's the reason for me error

11/12/30 04:48:56 INFO zookeeper.ClientCnxn: Session establishment complete
on server domU-12-31-38-04-AA-53.compute-1.internal/10.220.169.157:2181,
sessionid = 0x1348d4c23a60005, negotiated timeout = 40000
11/12/30 04:48:56 INFO ipc.HbaseRPC: Server at
localhost/127.0.0.1:60020could not be reached after 1 tries, giving
up.

Thank you for any pointers.

Regards,
Mark

Re: Do I really need fully-distributed mode for HBase?

[Stack <st...@duboce.net>]

On Fri, Dec 30, 2011 at 2:17 PM, Mark Kerzner <ma...@shmsoft.com> wrote:
> I found the answer, here it is for everyone's benefit,
>

Thanks for updating the list Mark,
St.Ack

Re: Do I really need fully-distributed mode for HBase?

[Mark Kerzner <ma...@shmsoft.com>]

I found the answer, here it is for everyone's benefit,

If you want to access HBase from a remote client (like any hadoop node, for
example), then you run into this problem: HBase master auto-discovers
itself as localhost (using ‘hostname’ command, and tells this to zookeeper,
which tells this to your client in turn, and it can’t connect. See here,
http://www.mail-archive.com/hbase-user@hadoop.apache.org/msg07296.html

And the answer is, tell the HBase master who he is, using the internal ip
of EC2 (did I mention that I am on EC2?), in /etc/hosts

#127.0.0.1      domU-12-31-38-04-AA-53.compute-1.internal
domU-12-31-38-04-AA-53
10.220.169.157  domU-12-31-38-04-AA-53.compute-1.internal
domU-12-31-38-04-AA-53

On Thu, Dec 29, 2011 at 11:37 PM, Mark Kerzner <ma...@gmail.com>wrote:

> Hi,
>
> if I am running HBase in pseudo-distributed mode and I cannot connect to it
> from other nodes, I guess, that is to be expected, right?
>
> I mean, the browser connects to http://hbase-url:60010, but the zookeeper,
> which ignored my ip and started on localhost, would give me a problem. So I
> would need 3 nodes for zookeeper. And that's the reason for me error
>
> 11/12/30 04:48:56 INFO zookeeper.ClientCnxn: Session establishment complete
> on server domU-12-31-38-04-AA-53.compute-1.internal/10.220.169.157:2181,
> sessionid = 0x1348d4c23a60005, negotiated timeout = 40000
> 11/12/30 04:48:56 INFO ipc.HbaseRPC: Server at
> localhost/127.0.0.1:60020could not be reached after 1 tries, giving
> up.
>
> Thank you for any pointers.
>
> Regards,
> Mark
>