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Posted to issues@lucene.apache.org by "Tommaso Teofili (Jira)" <ji...@apache.org> on 2019/12/18 13:00:00 UTC
[jira] [Commented] (LUCENE-8448) Slowdown of nested boolean queries
after LUCENE-8060
[ https://issues.apache.org/jira/browse/LUCENE-8448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16999130#comment-16999130 ]
Tommaso Teofili commented on LUCENE-8448:
-----------------------------------------
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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