LTR with grouping results in very high latency (3x) even while re-ranking 24 top groups.
How is re-ranking implemented in Solr? Is it expected that it would result in 3x more query time. Need clarifications on: 1. How many top groups are actually re-ranked, is it exactly what we pass in reRankDocs? 2. How many documents within each group is re-ranked? Can we control it with group.limit or some other parameter? What causes LTR take more time when grouping is performed? Is it scoring the documents again or merging the re-ranked docs with rest of the docs? Is there anyway to optimize this? ----- --Ilay -- Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html
