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https://issues.apache.org/jira/browse/SOLR-5973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13995254#comment-13995254
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Otis Gospodnetic commented on SOLR-5973:
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[~joel.bernstein] how does this play with SOLR-1680? I suspect it doesn't at
all, right? Do you think SOLR-1680 has any merit or should it be Won't Fix-ed?
> 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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