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Posted to user@hbase.apache.org by Marco Gallotta <ma...@gallotta.co.za> on 2012/08/17 22:28:43 UTC

Problem connecting to server localhost:60020

Hi there

I just expanded my hadoop&hbase from a single node in fake distributed mode to a cluster of 3 nodes. Most things were working fine, but when I run a mapreduce I get the following error on the non-master nodes:

2012-08-17 08:04:27,758 INFO org.apache.hadoop.ipc.HBaseRPC: Problem connecting to server: localhost/127.0.0.1:60020

60020 is the regionserver port. That should only be running on master. So why is it pointing to localhost on the non-master nodes? The only reference to localhost in the config is the ZK quorum (I couldn't find a way to use anything else).

Any idea what I might have misconfigured? Let me know what config files/etc. might be helpful to diagnose.



-- 
Marco Gallotta | Mountain View, California
Software Engineer, Infrastructure | Loki Studios
fb.me/marco.gallotta | twitter.com/marcog
marco@gallotta.co.za | +1 (650) 417-3313

Sent with Sparrow (http://www.sparrowmailapp.com/?sig)

Re: Problem connecting to server localhost:60020

Posted by Marco Gallotta <ma...@gallotta.co.za>.
It looks like master is listening on 127.0.0.1. Error from one of the non-master nodes regionserver logs:

2012-08-16 18:02:57,366 WARN org.apache.hadoop.hbase.regionserver.HRegionServer: Unable to connect to master. Retrying. Error was:
java.net.ConnectException: Connection refused

…

And netstat:

netstat -nlpt | grep 60000
tcp6       0      0 127.0.0.1:60000         :::*                    LISTEN      -                


Hmm…how would I get master to listen on 0.0.0.0?  

--  
Marco Gallotta | Mountain View, California
Software Engineer, Infrastructure | Loki Studios
fb.me/marco.gallotta | twitter.com/marcog
marco@gallotta.co.za | +1 (650) 417-3313

Sent with Sparrow (http://www.sparrowmailapp.com/?sig)


On Friday 17 August 2012 at 1:28 PM, Marco Gallotta wrote:

> Hi there
>  
> I just expanded my hadoop&hbase from a single node in fake distributed mode to a cluster of 3 nodes. Most things were working fine, but when I run a mapreduce I get the following error on the non-master nodes:
>  
> 2012-08-17 08:04:27,758 INFO org.apache.hadoop.ipc.HBaseRPC: Problem connecting to server: localhost/127.0.0.1:60020
>  
> 60020 is the regionserver port. That should only be running on master. So why is it pointing to localhost on the non-master nodes? The only reference to localhost in the config is the ZK quorum (I couldn't find a way to use anything else).
>  
> Any idea what I might have misconfigured? Let me know what config files/etc. might be helpful to diagnose.  
>  
> --  
> Marco Gallotta | Mountain View, California
> Software Engineer, Infrastructure | Loki Studios
> fb.me/marco.gallotta (http://fb.me/marco.gallotta) | twitter.com/marcog (http://twitter.com/marcog)
> marco@gallotta.co.za (mailto:marco@gallotta.co.za) | +1 (650) 417-3313
>  
> Sent with Sparrow (http://www.sparrowmailapp.com/?sig)
>