SOLR-17815: Add parameter to regulate for ACORN-based filtering in vector search#3680
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alessandrobenedetti merged 18 commits intoapache:mainfrom Oct 21, 2025
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…e/SOLR-17815 # Conflicts: # solr/core/src/java/org/apache/solr/schema/DenseVectorField.java # solr/core/src/java/org/apache/solr/search/neural/KnnQParser.java # solr/core/src/test/org/apache/solr/schema/DenseVectorFieldTest.java # solr/core/src/test/org/apache/solr/search/neural/KnnQParserTest.java
…e/SOLR-17815 # Conflicts: # solr/CHANGES.txt
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https://issues.apache.org/jira/browse/SOLR-17815
Description
Added the possibility to pass the Lucene filteredSearchThreshold parameter as a Solr Knn query parameter.
Solution
The parameter has been added to the KnnQParser class, and the getKnnVectorQuery method has been adapted to accept this parameter and call the appropriate KnnVectorQuery constructor in Lucene.
Tests
Two tests have been added in DenseVectorFieldTest to check that the getKnnVectorQuery method returns an object with the expected threshold set.
Two tests have been added in KnnQParserTest to check that the new filteredSearchThreshold parameter is correctly parsed and set.
Checklist
Please review the following and check all that apply:
mainbranch../gradlew check.