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https://issues.apache.org/jira/browse/LUCENE-5837?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14067533#comment-14067533
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Robert Muir commented on LUCENE-5837:
-------------------------------------

I dont understand how the MatchNoBits case is safe.

> Only check docsWithField when necessary in numeric comparators
> --------------------------------------------------------------
>
>                 Key: LUCENE-5837
>                 URL: https://issues.apache.org/jira/browse/LUCENE-5837
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Adrien Grand
>            Assignee: Adrien Grand
>            Priority: Minor
>             Fix For: 5.0, 4.10
>
>         Attachments: LUCENE-5837.patch
>
>
> Our numeric comparators have branches to deal with missing values. However 
> there are some cases when checking docs that have a field is not useful:
>  - if all docs have a value
>  - if no docs have a value
>  - if the missing value is 0



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