chlorochrule opened a new pull request #2259:
URL: https://github.com/apache/lucene-solr/pull/2259


   ## Description
   
   In Solr 8.6.3, minCompetitiveScore of WANDScorer resets to zero for each 
index segment and remain zero until maxScore is updated.
   There are two causes of this problem:
   
   - MaxScoreCollector does not set minCompetitiveScore of 
MinCompetitiveScoreAwareScorable newly generated for another index segment.
   - MaxScoreCollector updates minCompetitiveScore only if maxScore is updated. 
This behavior is correct considering the purpose of MaxScoreCollector.
   
   For details, see the attached pdf 
https://issues.apache.org/jira/secure/attachment/13019548/wand.pdf.
   
   Fixed https://issues.apache.org/jira/browse/SOLR-15114


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