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From Manikumar Reddy <ku...@nmsworks.co.in>
Subject Re: Controller fault tolerance
Date Mon, 17 Jun 2013 16:22:30 GMT
Hi Kishore,

Thanks for the quick response.

Regards,
Kumar

On Mon, Jun 17, 2013 at 8:18 PM, kishore g <g.kishore@gmail.com> wrote:

> Hi Kumar,
>
> You can start multiple controllers and only one of them will be active and
> rest of them will be in standby mode. If the active controller fails, one
> of the standby will become active and start managing the cluster.
>
> You can start the controllers either using command line or
> programmatically.
>
> command line
>
> ./run-helix-controller.sh --zkSvr localhost:2199 --cluster <clustername>
>
> using Helix api
>
> controllerManager = HelixControllerMain.startHelixController(zkAddress,
>           clusterName, "controller", HelixControllerMain.STANDALONE);
>
> Hope this helps.
>
> thanks,
> Kishore G
>
>
>
>
> On Mon, Jun 17, 2013 at 7:01 AM, Manikumar Reddy <kumar@nmsworks.co.in>wrote:
>
>> Hi,
>>
>> I am trying to understand the Helix Controller/Cluster manager fault
>> tolerance mechanism.
>> Single Controller will become Single-Point-Failure. So what are the
>> available options/techniques to
>> achieve controller fault tolerance?   Any pointers/recipes/code snippets?
>>
>> Regards,
>> Kumar
>
>
>

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