[
https://issues.apache.org/jira/browse/LUCENE-10469?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Adrien Grand resolved LUCENE-10469.
-----------------------------------
Fix Version/s: 9.1
Resolution: Fixed
> ConstantScoreQuery doesn't propagate its score mode correctly
> -------------------------------------------------------------
>
> Key: LUCENE-10469
> URL: https://issues.apache.org/jira/browse/LUCENE-10469
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Adrien Grand
> Priority: Minor
> Fix For: 9.1
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> We just noticed a performance bug on Elasticsearch that if you issue a search
> request sorted by field and the query is a MatchAllDocsQuery then everything
> works as expected.
> But if you change the query to be a MatchAllDocsQuery within a
> ConstantScoreQuery then the query suddenly visits all matching documents.
> This is due to the fact that ConstantScoreQuery always passes
> COMPLETE_NO_SCORES to the inner weight, and thet the MatchAllDocsQuery's
> optimized bulk scorer performs a brute-force for-loop over the documents to
> score unless the score mode is not exhaustive.
> The fix consists of making ConstantScoreQuery propagate a non-exhaustive
> score mode to the inner weight when the score mode that is passed to the
> ConstantScoreQuery is not exhaustive itself.
--
This message was sent by Atlassian Jira
(v8.20.1#820001)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org
For additional commands, e-mail: issues-h...@lucene.apache.org
