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https://issues.apache.org/jira/browse/LUCENE-9540?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17208416#comment-17208416
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Gautam Worah commented on LUCENE-9540:
--------------------------------------

It turns out that we are not double indexing the {{fullPathField}}. Removing 
the [line|#L495] that adds a {{StringValue}} to the {{fullPathField}} results 
in multiple failing tests. 

I think the lookup for input facet label using reverse index (postings) is 
enabled by the {{fullPathField}} and hence the removal of it causes test 
failures. Closing this issue. 

> Investigate double indexing of the fullPathField in the 
> DirectoryTaxonomyWriter
> -------------------------------------------------------------------------------
>
>                 Key: LUCENE-9540
>                 URL: https://issues.apache.org/jira/browse/LUCENE-9540
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Gautam Worah
>            Priority: Minor
>
> We may have reason to believe that we are double indexing the fullPathField 
> postings item in the DirectoryTaxonomyWriter constructor.
> This should ideally be a StoredField.
> See related discussion in PR https://github.com/apache/lucene-solr/pull/1733/
> Postings are already enabled for facet labels in 
> [FacetsConfig#L364-L399|https://github.com/apache/lucene-solr/blob/master/lucene/facet/src/java/org/apache/lucene/facet/FacetsConfig.java#L364-L366]
>  



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