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Posted to issues@lucene.apache.org by "Nhat Nguyen (Jira)" <ji...@apache.org> on 2021/09/24 03:35:00 UTC
[jira] [Resolved] (LUCENE-10119) singleSort should not be set when
after is non-null
[ https://issues.apache.org/jira/browse/LUCENE-10119?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Nhat Nguyen resolved LUCENE-10119.
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Resolution: Fixed
> singleSort should not be set when after is non-null
> ---------------------------------------------------
>
> Key: LUCENE-10119
> URL: https://issues.apache.org/jira/browse/LUCENE-10119
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/search
> Affects Versions: main (9.0), 8.10
> Reporter: Nhat Nguyen
> Assignee: Nhat Nguyen
> Priority: Major
> Fix For: main (9.0), 8.11, 8.10.1
>
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> Today we set the parameter `singleSort` to true when we have a single comparator to skip documents whose values equal the last visited value. However, this is incorrect when the search_after parameter is non-null as that we will skip documents whose values are equal, but their docIDs are greater than the docID of the `search_after` parameter.
>
> We found this issue in Elasticsearch after upgrading it to Lucene 8.10 and Lucene 9.
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