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https://issues.apache.org/jira/browse/SOLR-10046?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16149420#comment-16149420
 ] 

ASF subversion and git services commented on SOLR-10046:
--------------------------------------------------------

Commit d0a99af7efe81f2090663f23823e8f4104b837bf in lucene-solr's branch 
refs/heads/master from [~ctargett]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=d0a99af ]

Ref Guide: Doc updates for SOLR-10046, SOLR-10929, SOLR-11021


> Create UninvertDocValuesMergePolicy
> -----------------------------------
>
>                 Key: SOLR-10046
>                 URL: https://issues.apache.org/jira/browse/SOLR-10046
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Keith Laban
>            Assignee: Christine Poerschke
>             Fix For: 7.0
>
>
> Create a merge policy that can detect schema changes and use 
> UninvertingReader to uninvert fields and write docvalues into merged segments 
> when a field has docvalues enabled.
> The current behavior is to write null values in the merged segment which can 
> lead to data integrity problems when sorting or faceting pending a full 
> reindex. 
> With this patch it would still be recommended to reindex when adding 
> docvalues for performance reasons, as it not guarenteed all segments will be 
> merged with docvalues turned on.



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