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https://issues.apache.org/jira/browse/SOLR-12398?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16591952#comment-16591952
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Christine Poerschke commented on SOLR-12398:
--------------------------------------------
Randomly stumbled across this ... it seems that with these changes the
{{facet_heatmaps}} response format (for {{&facet=true&facet.heatmap=store}}
requests) changed from
{code}
..."facet_heatmaps":{"store":["gridLevel",2,"columns",32,"rows",32,...
{code}
to
{code}
..."facet_heatmaps":{"store":{"gridLevel":2,"columns":32,"rows":32,...
{code}
and (to me at least) the new format seems 'correct' but perhaps the format
change should be mentioned somehow in the upgrade notes -- what do you think?
(I'll attach a patch that if applied 'before' and 'after' can be used to see
the response format change.)
> Make JSON Facet API support Heatmap Facet
> -----------------------------------------
>
> Key: SOLR-12398
> URL: https://issues.apache.org/jira/browse/SOLR-12398
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: Facet Module, faceting, JSON Request API, spatial
> Reporter: Jaime Yap
> Assignee: David Smiley
> Priority: Major
> Labels: heatmap
> Fix For: 7.5
>
> Attachments: SOLR-12398.patch, SOLR-12398.patch
>
>
> The JSON query Facet API does not support Heatmap facets. For companies that
> have standardized around generating queries for the JSON query API, it is a
> major wart to need to also support falling back to the param encoding API in
> order to make use of them.
> More importantly however, given it's more natural support for nested
> subfacets, the JSON Query facet API is be able to compute more interesting
> Heatmap layers for each facet bucket. Without resorting to the older (and
> much more awkward) facet pivot syntax.
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