Hi everyone, I'm doing some cluster versioning split testing, and I've come across this property in the result body:

results[x].requests_params.first_q

Does anyone know what this property is supposed to represent, and if so, how it might have changed behavior from v26.0 to v28.0? To give a bit more context. Doing a search with

q: COSTUME LUGI

produces

first_q: costume

in the result on the v26.0 cluster, while it results

first_q: COSTUME LUGI

on the v28.0 cluster. Both clusters are a copy of each other, using the same synonyms + presets, etc. I've search the online documentation without luck - any ideas?

The

first_q

field is primarily used for analytics tracking purposes - it helps record what the system actually searched for rather than just what the user typed. It doesn't affect the actual search results themselves, but is useful for monitoring search behavior. As for different

first_q

for different versions, it could be different documents between clusters as well. There have been some fixes that can change the

first_q

parameter's value

Thank you! That makes sense 🙂