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https://issues.apache.org/jira/browse/LUCENE-7106?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrien Grand updated LUCENE-7106:
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    Attachment: LUCENE-7106.patch

Here is a patch that adds static methods to PointValues to compute aggregated 
min, max, size and doc counts on an IndexReader.

> Make it easy to have cumulated point stats across segments
> ----------------------------------------------------------
>
>                 Key: LUCENE-7106
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7106
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Adrien Grand
>            Assignee: Adrien Grand
>            Priority: Minor
>         Attachments: LUCENE-7106.patch
>
>
> For other parts of the index, it is easy thanks to the 
> Multi\{Terms,DocValues,...\} classes. However, we don't have such a thing for 
> points but it would still be nice to have a convenient way to compute eg. the 
> max value of a field on a whole index.



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