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From "Hoss Man (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-6351) Let Stats Hang off of Pivots (via 'tag')
Date Wed, 05 Nov 2014 00:44:35 GMT

    [ https://issues.apache.org/jira/browse/SOLR-6351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14197235#comment-14197235
] 

Hoss Man commented on SOLR-6351:
--------------------------------

FWIW: backport to 5x was completely painless -- no problems from "ant precommit" and all tests
pass.

Assuming jenkins doesn't find any problems on trunk I'll plan to commit the backport sometime
on thursday.

> 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
>         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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