[jira] [Created] (SOLR-15114) WAND does not work correctly on multiple segments in Solr 8.6.3

["Naoto Minami (Jira)" <ji...@apache.org>]

Naoto Minami created SOLR-15114:
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             Summary: WAND does not work correctly on multiple segments in Solr 8.6.3
                 Key: SOLR-15114
                 URL: https://issues.apache.org/jira/browse/SOLR-15114
             Project: Solr
          Issue Type: Bug
      Security Level: Public (Default Security Level. Issues are Public)
    Affects Versions: 8.6.3, master (9.0)
            Reporter: Naoto Minami
         Attachments: wand.pdf

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.

*Note*

This problem occurs in distributed search (SolrCloud) or the fl=score parameter specified.



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