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From Furkan KAMACI <>
Subject Re: Some Questions About Using Solr as Cloud
Date Mon, 15 Apr 2013 11:46:02 GMT
Hi Jack;

I see that SolrCloud makes everything automated. When I use SolrCloud is it
true that: there may be more than one computer responsible for indexing at
any time?

2013/4/15 Jack Krupansky <>

> There are no masters or slaves in SolrCloud - it's fully distributed. Some
> cluster nodes will be "leaders" (of the shard on that node) at a given
> point in time, but different nodes may be leaders at different points in
> time as they become "elected".
> In a distributed cluster you would never want to store documents only on
> one node. Sure, you can do that by setting the replication factor to 1, but
> that defeats half the purpose for SolrCloud.
> Index transfer is automatic - SolrCloud supports fully distributed update.
> You might be getting confused with the old "Master-Slave-Replication"
> model that Solr had (and still has) which is distinct from SolrCloud.
> -- Jack Krupansky
> -----Original Message----- From: Furkan KAMACI
> Sent: Sunday, April 14, 2013 7:45 PM
> To:
> Subject: Some Questions About Using Solr as Cloud
> I read wiki and reading SolrGuide of Lucidworks. However I want to clear
> something in my mind. Here are my questions:
> 1) Does SolrCloud lets a multi master design (is there any document that I
> can read about it)?
> 2) Let's assume that I use multiple cores i.e. core A and core B. Let's
> assume that there is a document just indexed at core B. If I send a search
> request to core A can I get result?
> 3) When I use multi master design (if exists) can I transfer one master's
> index data into another (with its slaves or not)?
> 4) When I use multi core design can I transfer one index data into another
> core or anywhere else?
> By the way thanks for the quick responses and kindness at mail list.

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