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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