Pretty helpful, thanks Erick! 2015-01-24 9:48 GMT+08:00 Erick Erickson <erickerick...@gmail.com>:
> you might, but probably not enough to notice. At 50G, the tf/idf > stats will _probably_ be close enough you won't be able to tell. > > That said, recently distributed tf/idf has been implemented but > you need to ask for it, see SOLR-1632. This is Solr 5.0 though. > > I've rarely seen it matter except in fairly specialized situations. > Consider a single core. Deleted documents still count towards > some of the tf/idf stats. So your scoring could theoretically > change after, say, an optimize. > > So called "bottom line" is that yes, the scoring may change, but > IMO not any more radically than was possible with single cores, > and I wouldn't worry about unless I had evidence that it was > biting me. > > Best > Erick > > On Fri, Jan 23, 2015 at 2:52 PM, Yandong Yao <yydz...@gmail.com> wrote: > > > Hi Guys, > > > > As the main scoring mechanism is based tf/idf, so will same query running > > against SolrCloud return different result against running it against > single > > core with same data sets as idf will only count df inside one core? > > > > eg: Assume I have 100GB data: > > A) Index those data using single core > > B) Index those data using SolrCloud with two cores (each has 50GB data > > index) > > > > Then If I query those with same query like 'apple', then will I get > > different result for A and B? > > > > > > Regards, > > Yandong > > >
