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https://issues.apache.org/jira/browse/SOLR-5973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13995629#comment-13995629
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Joel Bernstein commented on SOLR-5973:
--------------------------------------
SOLR-1680 is covered by this ticket and by the CollapsingQParserPlugin. So I
think we can shutdown SOLR-1680 as Won't fix and point to this ticket.
> Pluggable Ranking Collectors
> ----------------------------
>
> Key: SOLR-5973
> URL: https://issues.apache.org/jira/browse/SOLR-5973
> Project: Solr
> Issue Type: New Feature
> Components: search
> Reporter: Joel Bernstein
> Assignee: Joel Bernstein
> Priority: Minor
> Fix For: 4.9
>
> Attachments: SOLR-5973.patch, SOLR-5973.patch, SOLR-5973.patch,
> SOLR-5973.patch, SOLR-5973.patch, SOLR-5973.patch, SOLR-5973.patch,
> SOLR-5973.patch, SOLR-5973.patch, SOLR-5973.patch, SOLR-5973.patch,
> SOLR-5973.patch, SOLR-5973.patch
>
>
> This ticket introduces a new RankQuery and MergeStrategy to Solr. By
> extending the RankQuery class, and implementing it's interface, you can
> specify a custom ranking collector (TopDocsCollector) and distributed merge
> strategy for a Solr query.
> A new "rq" http parameter was added to support specifying a rank query using
> a custom QParserPlugin.
> Sample syntax:
> {code}
> q=*:*&wt=json&indent=true&rq={!myranker}
> {code}
> In the sample above the param: {code}rq={!myranker}{code} points to a
> QParserPlugin that returns a Query that extends RankQuery.
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