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https://issues.apache.org/jira/browse/LUCENE-5515?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martijn van Groningen updated LUCENE-5515:
------------------------------------------

    Attachment: LUCENE-5515.patch

Patch that includes the change to only create a hits ScoreDoc array equal to 
size and skips over the merged hits until the "from"th element is reached.

> Improve TopDocs#merge for pagination
> ------------------------------------
>
>                 Key: LUCENE-5515
>                 URL: https://issues.apache.org/jira/browse/LUCENE-5515
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Martijn van Groningen
>            Assignee: Martijn van Groningen
>            Priority: Minor
>             Fix For: 4.8
>
>         Attachments: LUCENE-5515.patch
>
>
> If TopDocs#merge takes from and size into account it can be optimized to 
> create a hits ScoreDoc array equal to size instead of from+size what is now 
> the case.



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