Distributed Search is designed only for disjoint cores. The document list from each core is returned sorted by the relevance score. The distributed searcher merges these sorted lists. Solr does not implement "distributed IDF", which essentially means distributed coordinated scoring. All scoring happens inside each core, relative to that core's contents. The resulting score numbers are not coordinated with each other, and you will get random results.
There is no way to say "use this core's results" because the searches are not compared all at once. Only the page of results fetched is compared, so there's no way to suppress a result in the second page if it was already found in the first. On Mon, Oct 19, 2009 at 3:30 PM, markwaddle <m...@markwaddle.com> wrote: > > I have a small core performing deltas quickly (core00), and a large core > performing deltas slowly (core01), both on the same set of documents. The > delta core is cleaned nightly. As you can imagine, at times there are two > versions of a document, one in each core. When I execute a query that > matches this document, sometimes it will come from the delta core, and some > times it will come from the large core. It almost seems random. Here is my > query: > > http://porsche:8181/worldip5/core00/select?shards=porsche:8181/worldip5/core00/,porsche:8181/worldip5/core01/&start=0&rows=20&q=hazard+gas+countrycode:JP > > When the delta documents from core00 are returned as desired the access logs > show: > > 10.36.34.150 - - [19/Oct/2009:15:22:37 -0700] POST /worldip5/core00/select > HTTP/1.1 200 293 1 > 10.36.34.150 - - [19/Oct/2009:15:22:37 -0700] POST /worldip5/core01/select > HTTP/1.1 200 506 1 > 10.36.34.150 - - [19/Oct/2009:15:22:37 -0700] POST /worldip5/core00/select > HTTP/1.1 200 1151 1 > 10.36.34.150 - - [19/Oct/2009:15:22:37 -0700] POST /worldip5/core01/select > HTTP/1.1 200 2597 1 > 10.36.34.151 - - [19/Oct/2009:15:22:37 -0700] GET > /worldip5/core00/select?shards=porsche:8181/worldip5/core00/,porsche:8181/worldip5/core01/&start=0&rows=20&q=hazard+gas+countrycode:JP > HTTP/1.1 200 11881 9 > > When the documents are returned from core01 the access logs show: > 10.36.34.150 - - [19/Oct/2009:15:22:37 -0700] POST /worldip5/core00/select > HTTP/1.1 200 289 1 > 10.36.34.150 - - [19/Oct/2009:15:22:37 -0700] POST /worldip5/core01/select > HTTP/1.1 200 506 1 > 10.36.34.150 - - [19/Oct/2009:15:22:37 -0700] POST /worldip5/core01/select > HTTP/1.1 200 3390 1 > 10.36.34.151 - - [19/Oct/2009:15:22:37 -0700] GET > /worldip5/core00/select?shards=porsche:8181/worldip5/core00/,porsche:8181/worldip5/core01/&start=0&rows=20&q=hazard+gas+countrycode:JP > HTTP/1.1 200 11873 9 > > Any ideas on why there is a difference in the requests made? Is there a way > I can tell Solr to prefer the documents in core00? > > Mark > -- > View this message in context: > http://www.nabble.com/Core-shard-preference-tp25966791p25966791.html > Sent from the Solr - User mailing list archive at Nabble.com. > > -- Lance Norskog goks...@gmail.com
