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From Paul Blanchaert <p...@search-solutions.net>
Subject Re: Re: how to join search mutiple collection in sorlcloud
Date Tue, 17 Nov 2015 07:57:06 GMT
You might want to take a look at/follow up upon SOLR-8297
<https://issues.apache.org/jira/browse/SOLR-8297>


On Tue, 17 Nov 2015 at 04:14 soledede_weng@ehsy.com <soledede_weng@ehsy.com>
wrote:

>
> Thanks Erick
>
> I think if can use hash for doc_id to all shards, then do join,Last merge
> the result in a node.
>
>
> soledede_weng@ehsy.com
>
> From: Erick Erickson
> Date: 2015-11-17 11:10
> To: solr-user
> Subject: Re: how to join search mutiple collection in sorlcloud
> In a word, no. At least probably not.
>
> There are some JIRA tickets dealing with distributed joins, and some
> with certain restrictions, specifically if the second (from)
> collection can be reproduced on every slice of the first (to)
> collection.
>
> In the trunk (6.0), there's the ParallelSQL stuff which has some
> relevance, but it's still not a full RDBMS type join.
>
> The usual recommendation is to flatten your data if at all possible so
> you don't _have_ two collections.
>
> Solr is a wonderful search engine. It is not an RDBMS and whenever I
> find myself trying to make it behave like an RDBMS I try to rethink
> the architecture.
>
> On Mon, Nov 16, 2015 at 6:56 PM, soledede_weng@ehsy.com
> <soledede_weng@ehsy.com> wrote:
> > Dear @solr_lucene
> > currently,I am using solr5.3.1,I have a requirement, I need search like
> in relation database(select * from A ,B where A.id=B.id),Can we implments
> with solr5.3 in SolrCloud mode,I have two collection,2 shards per
> collection.
> >   Help me please.
> >
> >         Thanks
> >
> >
> > soledede_weng@ehsy.com
>
-- 
------------------------------


Kind regards,

Paul Blanchaert <http://sr-sl.net/p/paul>
www.search-solutions.net
Tel: +32 497 05.01.03
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