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https://issues.apache.org/jira/browse/SOLR-18143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18067904#comment-18067904
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ASF subversion and git services commented on SOLR-18143:
--------------------------------------------------------

Commit d2ed2c4354576f5df06eab83ad8f51d69a4ee20b in solr's branch 
refs/heads/branch_10x from Rahul Goswami
[ https://gitbox.apache.org/repos/asf?p=solr.git;h=d2ed2c43545 ]

SOLR-18143: Upgrade the Lucene dependency from 10.3.2 to 10.4.0 (#4195)

Codec changes:                                                                  
                                                                                
                                                                                
           
  - SchemaCodecFactory, CuVSCodec, CuVSCodecFactory: Lucene103Codec -> 
Lucene104Codec                                                                  
                                                                                
                      
  - ScalarQuantizedDenseVectorField: migrated to 
Lucene104HnswScalarQuantizedVectorsFormat;                                      
                                                                                
                                             
    confidenceInterval, compress, and dynamicConfidenceInterval                 
                                                                                
                                                                    
    params are now deprecated; they're parsed but ignored with DeprecationLog 
warnings                                                                        
                                                                                
                      
  - BinaryQuantizedDenseVectorField: replaced 
Lucene102HnswBinaryQuantizedVectorsFormat                                       
                                                                                
                                               
    with Lucene104HnswScalarQuantizedVectorsFormat using 
ScalarEncoding.SINGLE_BIT_QUERY_NIBBLE                                          
                                                                                
                                    
                                                                                
                                                                                
                                                                                
             
  Documentation:                                                                
                                                                                
                                                                                
             
  - Updated dense-vector-search.adoc to reflect deprecated scalar quantization 
params                                                                          
                                                                                
              
  - Added Solr 10.1 section in major-changes-in-solr-10.adoc with codec change  
                                                                                
                                                                                
             
    downgradeability warning                                                    
                                                                                
                                                                                
             
  - Added step in dev-docs/lucene-upgrade.md to document codec changes in 
upgrade notes                                                                   
                                                                                
                   
                                                                                
                                                                                
                                                                                
             
  Other:                                                                        
                                                                                
                                                                                
             
    - Removed test configs for no-longer-validated confidenceInterval/compress 
constraints 

> Upgrade to Lucene 10.4
> ----------------------
>
>                 Key: SOLR-18143
>                 URL: https://issues.apache.org/jira/browse/SOLR-18143
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Rahul Goswami
>            Priority: Major
>              Labels: pull-request-available
>
> Lucene 10.4 released last week and contains several important Vector search 
> related changes. It also contains a critical enhancement which moves the 
> MIN_SUPPORTED_VERSION (Version.LATEST-1) check to the segment level instead 
> of requiring that the index be created in version no older than 
> MIN_SUPPORTED_VERSION. This is necessary to be able to open the indexes 
> originally created in Solr 8.x and upgraded via the recently introduced index 
> upgrade capability (while on Solr 9.x).
> * https://lucene.apache.org/core/10_4_0/changes/Changes.html
> * https://github.com/apache/solr/blob/main/dev-docs/lucene-upgrade.md



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