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From "Joel Bernstein (Jira)" <>
Subject [jira] [Commented] (SOLR-13892) Add postfilter support to {!join} queries
Date Tue, 05 Nov 2019 17:38:00 GMT


Joel Bernstein commented on SOLR-13892:

I'm not arguing that this is the best possible solution. I'm arguing that in common scenarios
this join has proven to be 700% faster than the existing implementation.

Unless there is another committer volunteering to improve the join, then I don't think we
should block progress on this improvement.

> Add postfilter support to {!join} queries
> -----------------------------------------
>                 Key: SOLR-13892
>                 URL:
>             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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