[SOLR-14983] Score returned in search request is original score and not reranked score

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 8.0
• Fix Version/s: 8.8, master (9.0)
• Assignee: Christine Poerschke
• Reporter: Krishan Goyal
• Created: 24/Sep/20 06:53
• Updated: 12/Nov/20 13:22
• Resolved: 12/Nov/20 13:22

Description

Score returned in search request is original score and not reranked score post the changes in https://issues.apache.org/jira/browse/LUCENE-8412.

Commit - https://github.com/apache/lucene-solr/commit/55bfadbce115a825a75686fe0bfe71406bc3ee44#diff-4e354f104ed52bd7f620b0c05ae8467d

Specifically - 

if (cmd.getSort() != null && query instanceof RankQuery == false && (cmd.getFlags() & GET_SCORES) != 0)

{     TopFieldCollector.populateScores(topDocs.scoreDocs, this, query); }

in SolrIndexSearcher.java recomputes the score but outputs only the original score and not the reranked score.

 

The issue is cmd.getQuery() is a type of RankQuery but the "query" variable is a boolean query and probably replacing query with cmd.getQuery() should be the right fix for this so that the score is not overriden for rerank queries