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https://issues.apache.org/jira/browse/SOLR-13892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16967703#comment-16967703
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Mikhail Khludnev commented on SOLR-13892:
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# the attached code doesn't get gain in comparison to existing {{{!join ..
score=none}}} SOLR-6234 please prove the opposite
# post-filter is irrelevant to these joins (I can explain why). The
opportunity for something like post-filtering/two-phase is discussed at
LUCENE-6332
> Add postfilter support to {!join} queries
> -----------------------------------------
>
> Key: SOLR-13892
> URL: https://issues.apache.org/jira/browse/SOLR-13892
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: query parsers
> Affects Versions: master (9.0)
> Reporter: Jason Gerlowski
> Priority: Major
> Attachments: SOLR-13892.patch
>
>
> The JoinQParserPlugin would be a lot performant in many use-cases if it could
> operate as a post-filter, especially when doc-values for the involved fields
> are available.
> With this issue, I'd like to propose a post-filter implementation for the
> {{join}} qparser.
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