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From Furkan KAMACI <furkankam...@gmail.com>
Subject Re: What is cluster overseer at SolrCloud?
Date Tue, 23 Apr 2013 19:09:58 GMT
Thanks for the explanation.

2013/4/23 Mark Miller <markrmiller@gmail.com>

>
> On Apr 23, 2013, at 2:53 PM, Furkan KAMACI <furkankamaci@gmail.com> wrote:
>
> > When I read about SolrCloud wiki there writes something about "cluster
> > overseer". What is the role of that at read and write processes? How can
> I
> > see which node is overseer at my cluster?
>
> The Overseer's main responsibility is to write the clusterstate.json file
> based on what individual nodes publish to ZooKeeper. It also does other
> things, like assign shard and node names. If the Overseer dies, another
> Overseer is elected and it starts processing the work queue where the dead
> Oveseer left off.
>
> You can see which node is the Overseer by going to the Cloud view in the
> admin UI. Click the Tree tab. Under /overseer_elect, click on the leader
> node. Part of it's id should tell you which node is acting as the overseer.
>
> - Mark

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