Akos, Can you provide your request params? Do you just group and/or count grouped facets? Can you clarify how field collapsing is different from grouping, just make it unambiguous?
On Wed, Nov 22, 2017 at 4:13 PM, Kempelen, Ákos < akos.kempe...@wolterskluwer.com> wrote: > Hello, > > I am migrating our codebase from Solr 4.7 to 7.0.1 but the performance of > result grouping seems very poor using the newer Solr. > For example a simple MatchAllDocsQuery takes 5 sec on Solr4.7, and 21 sec > on Solr7. > I wonder what causes the x4 difference in time? We hoped that newer Solr > versions will provide better performances... > Using Field collapsing could would be a solution, but it produces > different facet counts. > Thanks, > Akos > > > -- Sincerely yours Mikhail Khludnev
