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https://issues.apache.org/jira/browse/SOLR-6351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14223635#comment-14223635
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Ashish Shrowty commented on SOLR-6351:
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Hi all,
Does this allow for requesting only specific stats such as an mean or
countDistinct? For my use case, I don't really care about the actual distinct
values. Is this what SOLR-6349 is about?
Also, any idea when 5.0 is going to go out? This patch would save a lot of code
I would need to write myself.
Thanks for your help!
-Ashish
> Let Stats Hang off of Pivots (via 'tag')
> ----------------------------------------
>
> Key: SOLR-6351
> URL: https://issues.apache.org/jira/browse/SOLR-6351
> Project: Solr
> Issue Type: Sub-task
> Reporter: Hoss Man
> Assignee: Hoss Man
> Fix For: 5.0, Trunk
>
> Attachments: SOLR-6351.patch, SOLR-6351.patch, SOLR-6351.patch,
> SOLR-6351.patch, SOLR-6351.patch, SOLR-6351.patch, SOLR-6351.patch,
> SOLR-6351.patch, SOLR-6351.patch, SOLR-6351.patch, SOLR-6351.patch,
> SOLR-6351.patch, SOLR-6351.patch, SOLR-6351.patch, SOLR-6351.patch,
> SOLR-6351.patch, SOLR-6351.patch, SOLR-6351.patch, SOLR-6351.patch
>
>
> he goal here is basically flip the notion of "stats.facet" on it's head, so
> that instead of asking the stats component to also do some faceting
> (something that's never worked well with the variety of field types and has
> never worked in distributed mode) we instead ask the PivotFacet code to
> compute some stats X for each leaf in a pivot. We'll do this with the
> existing {{stats.field}} params, but we'll leverage the {{tag}} local param
> of the {{stats.field}} instances to be able to associate which stats we want
> hanging off of which {{facet.pivot}}
> Example...
> {noformat}
> facet.pivot={!stats=s1}category,manufacturer
> stats.field={!key=avg_price tag=s1 mean=true}price
> stats.field={!tag=s1 min=true max=true}user_rating
> {noformat}
> ...with the request above, in addition to computing the min/max user_rating
> and mean price (labeled "avg_price") over the entire result set, the
> PivotFacet component will also include those stats for every node of the tree
> it builds up when generating a pivot of the fields "category,manufacturer"
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