It looks like field collapsing may be the key: http://issues.apache.org/jira/browse/SOLR-236
But it also doesn't seem to be 'finalized' yet. I wonder how performant it is with indexes of 50 million documents+? On Thu, Jul 9, 2009 at 9:42 PM, shb<suh...@gmail.com> wrote: > you can refer to the facet search of solr, that might help you. > > 2009/7/10 Bradford Stephens <bradfordsteph...@gmail.com> > >> Greetings, >> >> We've been experimenting with grouping fields returned from document >> search results in Lucene, and we haven't gotten anything very >> encouraging. Basically, the more results we return, the longer it >> takes -- tens of seconds. Probably because we're doing expensive disks >> seeks. I'm hoping the SOLR crew out there may provide some insight :) >> >> What we're trying to do is similar to SQL's "GROUP BY". Let's say we >> have documents indexed by keyword for a content body, and also indexed >> by an Author name. If I search our document store (very large) for the >> word "laptop", I would like to be able to calculate the 10 authors >> that appeared the most. >> >> I've done some searching through the mailing list, but couldn't glean >> much insight. What do you think? >> >> -- >> http://www.roadtofailure.com -- The Fringes of Scalability, Social >> Media, and Computer Science >> > -- http://www.roadtofailure.com -- The Fringes of Scalability, Social Media, and Computer Science
