We have a rare, hard-to-reproduce problem with our Solr 1.3 servers, and I would appreciate any ideas.
Ocassionally, a server will start returning results with really poor relevance. Single term queries work fine, but multi-term queries are scored based on the most common term (lowest IDF). I don't see anything in the logs when this happens. We have a monitor doing a search for the 100 most popular movies once per minute to catch this, so we know when it was first detected. I'm attaching two explain outputs, one for the query "changeling" and one for "the changeling". We are running Solr 1.3 with Lucene 2.4.0, and have added a fuzzy query using JaroWinkler matching. I'd appreciate ideas about where to look, what debug output to try, etc. wunder