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From Alejandro Calbazana <>
Subject Re: Solr + Federated Search Question
Date Thu, 02 Oct 2014 16:29:37 GMT

Thanks.  Some terms are a bit overloaded.  By "federated", I do mean the
ability to query multiple, disparate, repositories.  So, no.  All of my
data would not necessarily be in Solr.  Solr would be one of several -
databases, filesystems, document stores, etc...  that I would like to
"plug-in".  The content in each repository would be of different types (the
shape/schema of the content would differ significantly).



On Wed, Oct 1, 2014 at 9:47 AM, Jack Krupansky <>

> Alejandro, you'll have to clarify how you are using the term "federated
> search". I mean, technically Ahmet is correct in that Solr queries can be
> fanned out to shards and the results from each shard aggregated
> ("federated") into a single result list, but... more traditionally,
> "federated" refers to "disparate" databases or search engines.
> See:
> So, please tell us a little more about what you are really trying to do.
> I mean, is all of your data in Solr, in multiple collections, or on
> multiple Solr servers, or... is only some of your data in Solr and some is
> in other search engines?
> Another approach taken with Solr is that indeed all of your source data
> may be in "disparate databases", but you perform an ETL (Extract,
> Transform, and Load) process to ingest all of that data into Solr and then
> simply directly search the data within Solr.
> -- Jack Krupansky
> -----Original Message----- From: Ahmet Arslan
> Sent: Wednesday, October 1, 2014 9:35 AM
> To:
> Subject: Re: Solr + Federated Search Question
> Hi,
> Federation is possible. Solr has distributed search support with shards
> parameter.
> Ahmet
> On Wednesday, October 1, 2014 4:29 PM, Alejandro Calbazana <
>> wrote:
> Hello,
> I have a general question about Solr in a federated search context.  I
> understand that Solr does not do federated search and that  different tools
> are often used to incorporate Solr indexes into a federated/enterprise
> search solution.  Does anyone have recommendations on any products (open
> source or otherwise) that addresses this space?
> Thanks,
> Alejandro

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