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From Brian Jeltema <>
Subject Re: incorrect host display for RegionServer
Date Wed, 10 Jul 2013 15:56:36 GMT
Thanks. The pid files were the problem. 

By 'other UI components' I was referring to things like the HBase Master Web UI
and the Alert/Health check window in the HBase service page.

On Jul 10, 2013, at 10:48 AM, Sumit Mohanty wrote:

> The Ambari agents rely on a set of files that store the pid of the running
> process to figure out if the components (e.g. RegionServer) are up. While
> the actual path may vary due to specific deployments, you can look at
> /var/run/hbase to see if the PID in the file is matching the process id of
> the active region server.
> Is it possible for you to shutdown the region servers manually and start
> them through Ambari? If that is not possible then I can dig-up the exact
> command, as used by Ambari, to start the region server. That will ensure
> that the Ambari agent can "see" the region servers.
> Can you provide more details on "other UI components show those servers as
> being up"?
> Thanks
> Sumit
> On 7/10/13 6:05 AM, "Brian Jeltema" <> wrote:
>> I have a 6-node cluster that I deployed with Ambari. While trying to
>> resolve some code issues, I
>> manually stopped/restarted some HBase RegionServers. Now the 'Hosts' page
>> shows some
>> nodes with a yellow bullet and the popup says the RegionServer is down in
>> those nodes. However,
>> those servers are running and all of the other UI components show those
>> servers as being up.
>> I've restarted the server and all the agents,  with no change. Any
>> suggestions as to cause/fix?
>> TIA
>> Brian

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