https://issues.apache.org/jira/browse/LUCENE-1812
On Fri, Jun 18, 2010 at 7:26 PM, Otis Gospodnetic <otis_gospodne...@yahoo.com> wrote: > Lance, which project in Solr are you referring to? > > > Thanks, > > Otis > ----Sematext :: http://sematext.com/ :: Solr - Lucene - Nutch > Lucene ecosystem search :: http://search-lucene.com/ > > > > ----- Original Message ---- >> From: Lance Norskog <goks...@gmail.com> >> To: solr-user@lucene.apache.org >> Sent: Fri, June 18, 2010 8:16:46 PM >> Subject: Re: federated / meta search >> >> Yes, you can do this. You need to have a common system for creating > unique >> ids for the documents. > > Also, there's an odd problem around relevance. >> Relevance scoring is > based on all of the terms in a field in the whole index, >> and there is > a "statistical fingerprint" of this for an index. With two >> indexes > from two sources, the terms in the documents will not have the >> same > "fingerprint". Relevance scores from one shard will not match >> the > meaning of a document's score in the other shard. > > There is a >> project to make this work in Solr, but it is not nearly finished. > > Lance >> Norskog > > On Fri, Jun 18, 2010 at 4:28 AM, Sascha Szott < >> ymailto="mailto:sz...@zib.de"; href="mailto:sz...@zib.de";>sz...@zib.de> >> wrote: >> Hi Joe & Markus, >> >> sounds good! Maybe I should >> better add a note on the Wiki page on federated >> search >> [1]. >> >> Thanks, >> Sascha >> >> [1] >> href="http://wiki.apache.org/solr/FederatedSearch"; target=_blank >> >http://wiki.apache.org/solr/FederatedSearch >> >> Joe Calderon >> wrote: >>> >>> yes, you can use distributed search across shards >> with different >>> schemas as long as the query only references >> overlapping fields, i >>> usually test adding new fields or tokenizers >> on one shard and deploy >>> only after i verified its working >> properly >>> >>> On Thu, Jun 17, 2010 at 1:10 PM, Markus >> Jelsma< >> href="mailto:markus.jel...@buyways.nl";>markus.jel...@buyways.nl> >>> >> wrote: >>>> >>>> >> Hi, >>>> >>>> >>>> >>>> Check out >> Solr sharding [1] capabilities. I never tested it with >>>> different >> schema's but if each node is queried with fields that it >> supports, >>>> it should return useful >> results. >>>> >>>> >>>> >>>> [1]: >> href="http://wiki.apache.org/solr/DistributedSearch"; target=_blank >> >http://wiki.apache.org/solr/DistributedSearch >>>> >>>> >>>> >>>> >> Cheers. >>>> >>>> -----Original >> message----- >>>> From: Sascha Szott< >> ymailto="mailto:sz...@zib.de"; >> href="mailto:sz...@zib.de";>sz...@zib.de> >>>> Sent: Thu >> 17-06-2010 19:44 >>>> To: >> ymailto="mailto:solr-user@lucene.apache.org"; >> href="mailto:solr-user@lucene.apache.org";>solr-user@lucene.apache.org; >>>> >> Subject: federated / meta search >>>> >>>> Hi >> folks, >>>> >>>> if I'm seeing it right Solr currently >> does not provide any support for >>>> federated / meta searching. >> Therefore, I'd like to know if anyone has >>>> already put efforts >> into this direction? Moreover, is federated / meta >>>> search >> considered a scenario Solr should be able to deal with at all or >>>> >> is it (far) beyond the scope of Solr? >>>> >>>> To be more >> precise, I'll give you a short explanation of my >>>> requirements. >> Assume, there are a couple of Solr instances running at >>>> >> different places. The documents stored within those instances are >> all >>>> from the same domain (bibliographic records), but it can not >> be ensured >>>> that the schema definitions conform to 100%. But lets >> say, there are at >>>> least some index fields that are present in >> all instances (fields with >>>> the same name and type definition). >> Now, I'd like to perform a search on >>>> all instances at the same >> time (with the restriction that the query >>>> contains only those >> fields that overlap among the different schemas) and >>>> combine the >> results in a reasonable way by utilizing the score >>>> information >> associated with each hit. Please note, that due to legal >>>> issues >> it is not feasible to build a single index that integrates the >>>> >> documents of all Solr instances under >> consideration. >>>> >>>> Thanks in >> advance, >>>> >> Sascha >>>> >>>> >> >> > > > > -- >> > Lance Norskog > >> href="mailto:goks...@gmail.com";>goks...@gmail.com > -- Lance Norskog goks...@gmail.com
