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https://issues.apache.org/jira/browse/LUCENE-8448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16999130#comment-16999130
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Tommaso Teofili commented on LUCENE-8448:
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I get the same issue as [~dweiss], in a BQ with *many* {{SHOULD}} clauses, I
get a serious slowdown (~10x) if I run the same code with 7.6.0 vs 8.3.1 [1]
(~200ms vs ~2s).
[1] :
https://github.com/tteofili/Anserini-embeddings/blob/nnsearch/src/main/java/io/anserini/embeddings/nn/fw/FakeWordsRunner.java
> Slowdown of nested boolean queries after LUCENE-8060
> ----------------------------------------------------
>
> Key: LUCENE-8448
> URL: https://issues.apache.org/jira/browse/LUCENE-8448
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Adrien Grand
> Priority: Minor
> Fix For: 8.0
>
> Attachments: LUCENE-8448.patch, LUCENE-8448.patch
>
>
> Mike's nightly benchmarks revealed that disabling hit counts slowed down
> nested boolean queries
> http://people.apache.org/~mikemccand/lucenebench/AndHighOrMedMed.html
> http://people.apache.org/~mikemccand/lucenebench/AndMedOrHighHigh.html.
> We are probably not propagating max scores and/or blocks efficiently.
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