It might have the same root cause like https://issues.apache.org/jira/browse/SOLR-10653?filter=-3 Could you share more details about your env setup: is it "SolrCloud"? is it /get or /select ? etc.
On Fri, Dec 1, 2023 at 12:05 AM Andrew Hankinson <andrew.hankinson@rism.digital> wrote: > Hi, > > I have a schema with a UUID field type configured as a unique key. > > <field name="id" type="uuid" indexed="true" stored="true" required="true" > multiValued="false" /> > > I recently upgraded my Solr installation to 9.3 (from 7.6) and my > application stopped working. It turns out that Solr has stopped encoding > UUIDs as strings in the JSON response writer. > > Whereas before I would get: > > "id":"76af09e3-db43-4e7e-a46f-9bf03e343db9", > > Now I get: > > "id":1b5230fb-a15d-4aea-8720-8e0a1c6e47ae, > > Of course, UUIDs are not a valid JSON data type, so this looks like a bug > to me? > > -Andrew -- Sincerely yours Mikhail Khludnev