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https://issues.apache.org/jira/browse/SOLR-1682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12899235#action_12899235
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Yonik Seeley commented on SOLR-1682:
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OK, so if I'm reading the patch correctly, it looks like the new group.sort you
added decouples the sort of the groups from the sort of the documents within
each group? (and group.sort specifies the sort of the docs *within* each
group?)
What's the intended semantics of how to sort the groups? For example: if I'm
sorting the documents within each group by price desc, and I'm sorting the
groups by popularity desc... what if the top docs kept in group A (those with
the highest price) are not the docs with the highest popularity? Are groups
sorted by the popularity of the first doc (i.e. the one with the highest
price), or are they sorted by the highest popularity doc with group value A
(even if it's not in the top N in that group)?
> Implement CollapseComponent
> ---------------------------
>
> Key: SOLR-1682
> URL: https://issues.apache.org/jira/browse/SOLR-1682
> Project: Solr
> Issue Type: Sub-task
> Components: search
> Reporter: Martijn van Groningen
> Assignee: Shalin Shekhar Mangar
> Fix For: Next
>
> Attachments: field-collapsing.patch, SOLR-1682.patch,
> SOLR-1682.patch, SOLR-1682.patch, SOLR-1682.patch, SOLR-1682_prototype.patch,
> SOLR-1682_prototype.patch, SOLR-1682_prototype.patch, SOLR-236.patch
>
>
> Child issue of SOLR-236. This issue is dedicated to field collapsing in
> general and all its code (CollapseComponent, DocumentCollapsers and
> CollapseCollectors). The main goal is the finalize the request parameters and
> response format.
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