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https://issues.apache.org/jira/browse/LUCENE-10126?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17422096#comment-17422096
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Mayya Sharipova commented on LUCENE-10126:
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[~uschindler]  "ML team" stands for machine learning, they are using scroll 
searches that use Lucene search with after parameter.

> CompetitiveIterator of NumericComparator can wrongly skip documents
> -------------------------------------------------------------------
>
>                 Key: LUCENE-10126
>                 URL: https://issues.apache.org/jira/browse/LUCENE-10126
>             Project: Lucene - Core
>          Issue Type: Bug
>          Components: core/search
>    Affects Versions: 8.9, 8.10
>            Reporter: Nhat Nguyen
>            Priority: Major
>          Time Spent: 3h 50m
>  Remaining Estimate: 0h
>
> The ML team at Elastic reported that a large scroll with an Elasticsearch 
> nightly build that uses Lucene 9.0 snapshot returns fewer documents than 
> expected. I looked into it and found that the competitive iterator can 
> wrongly skip docs with a chunked bulk scorer.



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