[jira] [Updated] (SOLR-8998) JSON Facet API child roll-ups

["Mikhail Khludnev (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-8998?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mikhail Khludnev updated SOLR-8998:
-----------------------------------
    Attachment: SOLR-8998-doc.patch

> JSON Facet API child roll-ups
> -----------------------------
>
>                 Key: SOLR-8998
>                 URL: https://issues.apache.org/jira/browse/SOLR-8998
>             Project: Solr
>          Issue Type: New Feature
>          Components: Facet Module
>            Reporter: Yonik Seeley
>            Priority: Major
>         Attachments: SOLR-8998-doc.patch, SOLR-8998.patch, SOLR-8998.patch, SOLR-8998.patch, SOLR_8998.patch, SOLR_8998.patch, SOLR_8998.patch
>
>
> The JSON Facet API currently has the ability to map between parents and children ( see http://yonik.com/solr-nested-objects/ )
> This issue is about adding a true rollup ability where parents would take on derived values from their children.  The most important part (and the most difficult part) will be the external API.
> [~mkhludnev] says
> {quote}
> The bottom line is to introduce {{uniqueBlock(\_root_)}} aggregation, which is supposed to be faster than {{unique(\_root_)}} and purposed for blocked index only. For now it it supports singlevalue string fields, docValues usually make sense.   
> {quote}



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