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https://issues.apache.org/jira/browse/LUCENE-6756?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrien Grand updated LUCENE-6756:
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Attachment: MABench.java
LUCENE-6756.patch
Here are a patch and the simplistic/non-realistic/terrible benchmark I used.
> Give MatchAllDocsQuery a dedicated BulkScorer
> ---------------------------------------------
>
> Key: LUCENE-6756
> URL: https://issues.apache.org/jira/browse/LUCENE-6756
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Minor
> Attachments: LUCENE-6756.patch, MABench.java
>
>
> MatchAllDocsQuery currently uses the default BulkScorer, which creates a
> Scorer and iterates over matching doc IDs up to NO_MORE_DOCS. I tried to
> build a dedicated BulkScorer, which seemed to help remove abstractions as it
> helped improve throughput by a ~2x factor with simple collectors.
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