Hoss Man created SOLR-6351:
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Summary: 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
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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