Looks like this is because you are indexing your property as text. See https://docs.janusgraph.org/index-backend/text-search/#full-text-search_1

I believe the query has(“country", P.neq(null)) would work when you build your index as follows:

addKey(country, Mapping.STRING.asParameter()).buildMixedIndex("search”)


or using Mapping.TEXTSTRING.

Moreover, if you try the unreleased version (on GitHub master branch), even your original query and setup should work.

Thank you so much! I was using the newest release, but compiling the lastest source (from main branch) did indeed fix the problem. Or at least I think it has, since I don't get any more warnings.
On the other hand I'm absolutely confused and I don't know what I'm doing. I'm new with Janus, and the process of creating these indexes seems overly complex. What's the difference between "text" and "string"? And why wasn't it working with the previous release?