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https://issues.apache.org/jira/browse/SOLR-11706?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16988485#comment-16988485
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ASF subversion and git services commented on SOLR-11706:
--------------------------------------------------------

Commit 2d2f4b95212db921c4161e0a17f79114f865ba95 in lucene-solr's branch 
refs/heads/branch_8x from Munendra S N
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=2d2f4b9 ]

SOLR-11706: add support for aggregation on multivalued fields

* min, max, sum, sumsq, avg, stddev, variance, percentile aggregations
  in JSON facets now supports multivalued fields


> JSON FacetModule can't compute stats (min,max,etc...) on multivalued fields
> ---------------------------------------------------------------------------
>
>                 Key: SOLR-11706
>                 URL: https://issues.apache.org/jira/browse/SOLR-11706
>             Project: Solr
>          Issue Type: Bug
>          Components: Facet Module
>            Reporter: Chris M. Hostetter
>            Assignee: Munendra S N
>            Priority: Major
>         Attachments: SOLR-11706.patch, SOLR-11706.patch, SOLR-11706.patch, 
> SOLR-11706.patch, SOLR-11706.patch
>
>
> While trying to write some tests demonstrating equivalences between the 
> StatsComponent and the JSON FacetModule i discovered that the FacetModules 
> stat functions (min, max, etc...) don't seem to work on multivalued fields.
> Based on the stack traces, i gather the problem is because the FacetModule 
> seems to rely exclusively on using the "Function" parsers to get a value 
> source -- apparently w/o any other method of accumulating numeric stats from 
> multivalued (numeric) DocValues?



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