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https://issues.apache.org/jira/browse/LUCENE-10119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17424140#comment-17424140
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ASF subversion and git services commented on LUCENE-10119:
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Commit 45e8f639b029c6b6ed99f7e39ce9791dca653a37 in lucene's branch
refs/heads/main from Nhat Nguyen
[ https://gitbox.apache.org/repos/asf?p=lucene.git;h=45e8f63 ]
LUCENE-10119: Add CHANGES entry
> 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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