Hi,
I want to inform you about a behavior change in SolR 9.6 (Lucene 9.10) vs. SolR
9.7 (Lucene 9.11) for vector searches.
We heavily rely on vector searches for embeddings in combination with filter
queries on the parent documents.
Our queries in general looked like this:
select?q={ knn f=vector
We have seen this, and when we tested against Solr 9.8 (currently being
released), the error went away.
It turned out to be a weird thing about the search executor, but we
couldn't necessarily narrow down why it happened.
Anyway, please test out with the new Solr 9.8.0 release when it is
available
I'm not sure the KNN search supports multiple sort conditions.
I should do some deep dive in the Lucene code but I don't have time in the
foreseeable short future.
I can imagine that anyway it would only support 're-ranking' the retrieved
topK by the additional score condition, this can not affect
