Turns out that params are loaded into req.toLog here [1] that's happened before stream body is parsed and json is inserted as json param at [2] As a quick custom fix you may develop a component which will put req.params.json into req.toLog.
Also, a contribution for common cases is welcomed! [1] https://github.com/apache/solr/blob/e17078a98a8ebea1a28853d02527f4dc81da4d6b/solr/core/src/java/org/apache/solr/core/SolrCore.java#L2916 [2] https://github.com/apache/solr/blob/b76a29d17c874806e3b6516810772e2238e93098/solr/core/src/java/org/apache/solr/handler/RequestHandlerBase.java#L235 On Mon, Jun 23, 2025 at 11:32 AM Andrew Hankinson <andrew.hankinson@rism.digital> wrote: > Sorry -- I also meant to mention that I set `logParamsList=json` but that > didn't work because I think it's looking for a "&json=... GET parameter. > > > On 23 Jun 2025, at 10:14, Mikhail Khludnev <m...@apache.org> wrote: > > > > Hi, > > It seems like it works by design. see > > > https://github.com/apache/solr/blob/e17078a98a8ebea1a28853d02527f4dc81da4d6b/solr/core/src/java/org/apache/solr/core/SolrCore.java#L2932 > > It logs only query string params if logParamsList is absent, and > > perhaps you'll get all json request logged if set logParamsList=json see > > > https://github.com/apache/solr/blob/e17078a98a8ebea1a28853d02527f4dc81da4d6b/solr/core/src/java/org/apache/solr/request/json/RequestUtil.java#L182 > > but I'm not sure whether it works as you need. > > > > On Mon, Jun 23, 2025 at 10:07 AM Andrew Hankinson > > <andrew.hankinson@rism.digital> wrote: > > > >> Hello, > >> > >> I am on Solr 9.8.1 in standalone mode, and I'm trying to debug a number > of > >> slow queries. > >> > >> We've implemented almost all of our searches using the JSON Request API, > >> > https://solr.apache.org/guide/solr/latest/query-guide/json-request-api.html > >> > >> However, in the logs, and in the slow query logs, the JSON Request API > >> search parameters do not appear: > >> > >> 2025-06-23 06:40:36.284 WARN (qtp1844334363-624-null-177821) [c: s: r: > >> x:core_name t:null-177821] o.a.s.c.S.SlowRequest slow: webapp=/solr > >> path=/select params={} hits=0 status=0 QTime=16914 > >> > >> You can imagine this makes it difficult to tell what is causing the > >> problem! > >> > >> I've looked around and couldn't really find anything. I'm hesitant to > use > >> the "logParamsList" query parameter since I would have to 'opt-in' to > quite > >> a big list of query parameters. I've also tried enabling the "temporary" > >> logging, but I think there's a bug with enabling these in standalone > mode? > >> I get an error "Parameter nodes only supported in Cloud mode". > >> > >> Is there a secret incantation that would help here? > >> > >> Thanks, > >> -Andrew > > > > > > > > -- > > Sincerely yours > > Mikhail Khludnev > > -- Sincerely yours Mikhail Khludnev
