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https://issues.apache.org/jira/browse/SOLR-13348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16831979#comment-16831979
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ASF subversion and git services commented on SOLR-13348:
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Commit 2faed4cada62add788f41d739d89bb77e6c913e0 in lucene-solr's branch
refs/heads/branch_8x from Ishan Chattopadhyaya
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=2faed4c ]
SOLR-13348: Speed up collapsing by avoiding scoring of ineligible documents
> CollapsingQParserPlugin should not run scorer for documents not eligible for
> collapsing
> ---------------------------------------------------------------------------------------
>
> Key: SOLR-13348
> URL: https://issues.apache.org/jira/browse/SOLR-13348
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: search
> Affects Versions: 8.0, master (9.0)
> Reporter: Andrzej Wislowski
> Assignee: Ishan Chattopadhyaya
> Priority: Major
> Attachments: SOLR-13348.patch
>
>
> CollapsingQParserPlugin should not run scorer for documents not eligible for
> collapsing (in cases when score is not needed for collapsing operation) but
> only for the result sorting, decoration of result fields or boosting.
>
> Performance improvement example:
> 2_000_000 documents collapsed by sort without score to 130_000 then sorted by
> score improved from 4300ms to 2700ms
>
> I am attaching patch on master branch.
>
>
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