If the sort key (score, title, whatever) is the same for two documents, they will be displayed in internal doc ID order. That can be different on different replicas or indexes. I’ve seen this with Solr Cloud and documents with short titles.
To get a stable order, have a secondary sort by ID. Something like: score desc, id desc wunder Walter Underwood wun...@wunderwood.org http://observer.wunderwood.org/ (my blog) > On Jan 15, 2025, at 4:30 AM, Binal Panchal <binal.panchal...@gmail.com> wrote: > > Hello Team, > > I have two Solr indexes having the same documents. If I do sorting, the > results are the same but the order is different. How does Solr decide the > ordering, on what basis? > > Thanks & Regards, > Binal Pancha