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https://issues.apache.org/jira/browse/SOLR-7306?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yonik Seeley resolved SOLR-7306.
--------------------------------
Resolution: Fixed
Fix Version/s: 5.1
Committed. Here are some more examples of use:
http://yonik.com/percentiles-for-solr-faceting/
> Add percentiles to Facet Module
> -------------------------------
>
> Key: SOLR-7306
> URL: https://issues.apache.org/jira/browse/SOLR-7306
> Project: Solr
> Issue Type: New Feature
> Reporter: Yonik Seeley
> Fix For: 5.1
>
> Attachments: SOLR-7306.patch
>
>
> Use Ted Dunnings t-digest to add distributed percentile support to the new
> Facet Module (aka "JSON Facets").
> {code}
> // single percentile over complete doc set
> json.facet={ median : 'percentile(my_field,50)' }
> // calculate multiple percentiles of a function
> json.facet={multi:'percentile( mul(f1,f2), 1,10,50,90,99)' }
> // calculate the median of each facet bucket and sort by that value
> json.facet={categories:{terms:{
> field:cat ,
> sort:'median desc' ,
> facet : {
> median : 'percentile(myfield,50)' ,
> otherstat : 'sum(something_else)'
> }
> }}}
> {code}
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