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From "Erick Erickson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-6351) Let Stats Hang off of Pivots (via 'tag')
Date Wed, 06 Apr 2016 21:09:25 GMT

    [ https://issues.apache.org/jira/browse/SOLR-6351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15229117#comment-15229117
] 

Erick Erickson commented on SOLR-6351:
--------------------------------------

Please raise questions like this on the user's list rather than JIRAs, we try to reserve JIRA
entries for code issues rather than usage questions.

> 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, master
>
>         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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