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https://issues.apache.org/jira/browse/SOLR-4465?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13597840#comment-13597840
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Andy Laird commented on SOLR-4465:
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Thanks, David...
Yes, we are actually already using FieldCollapse for other purposes. In our
schema different groupings of docs -- we call them "stacks" -- share the same
value for a field X. For a given query we only want one "best result" (the
so-called "hero" doc) from a bunch of docs that score high but have the same
value for X.
> Configurable Collectors
> -----------------------
>
> Key: SOLR-4465
> URL: https://issues.apache.org/jira/browse/SOLR-4465
> Project: Solr
> Issue Type: New Feature
> Components: search
> Affects Versions: 4.1
> Reporter: Joel Bernstein
> Fix For: 4.2, 5.0
>
> Attachments: SOLR-4465.patch, SOLR-4465.patch, SOLR-4465.patch,
> SOLR-4465.patch, SOLR-4465.patch, SOLR-4465.patch, SOLR-4465.patch,
> SOLR-4465.patch, SOLR-4465.patch, SOLR-4465.patch, SOLR-4465.patch
>
>
> This issue is to add configurable custom collectors to Solr. This expands the
> design and work done in issue SOLR-1680 to include:
> 1) CollectorFactory configuration in solconfig.xml
> 2) Http parameters to allow clients to dynamically select a CollectorFactory
> and construct a custom Collector.
> 3) Make aspects of QueryComponent pluggable so that the output from
> distributed search can conform with custom collectors at the shard level.
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