Hi folks,
Looks like LUCENE-5795 (https://github.com/apache/lucene-solr/commit/173a44e67c7c3c1a9ffbe7259ea8b45f1f53b015#diff-d3409eb300a059322d46e4c9f43717ed) changed the “lessThan” condition in FreqQ PriorityQueue to actually be less than in order to only collect top N terms. However, when calculating the boost MoreLikeThis::createQuery() it still uses the PriorityQueue’s first pop() as the bestScore, when that actually would be the least element now. We worked around this in our production instance by iterating thru the entire PriorityQueue to find the largest score (since we only ever use very small N=5). I’m wondering if this is what was intended or a known bug? Thanks, -Jesse
