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https://issues.apache.org/jira/browse/SOLR-10046?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15886300#comment-15886300
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Christine Poerschke commented on SOLR-10046:
--------------------------------------------

Thanks Keith! Just sent you a small fix [pull 
request|https://github.com/kelaban/lucene-solr/pull/3] to do with the new 
{{skipIntegrityChecks}} property ...

... other than that I have no further comments or observations here except that 
I'd appreciate extra pair(s) of eyes before proceeding to commit the change 
towards the end of this or the beginning of this week.

> 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
>
> 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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