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https://issues.apache.org/jira/browse/LUCENE-6145?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrien Grand updated LUCENE-6145:
---------------------------------
    Attachment: LUCENE-6145.patch

Here is a patch. EarlyTerminatingSortingCollector now also takes the merge 
policy as an argument to check if the sort order is a prefix of the index-time 
order and then early-terminates on every segment where the serialized index 
order matches the sort order that is wrapped by the merge policy.

> Make EarlyTerminatingSortingCollector smarter about when it can early 
> terminate
> -------------------------------------------------------------------------------
>
>                 Key: LUCENE-6145
>                 URL: https://issues.apache.org/jira/browse/LUCENE-6145
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Adrien Grand
>            Assignee: Adrien Grand
>            Priority: Minor
>         Attachments: LUCENE-6145.patch
>
>
> Today EarlyTerminatingSortingCollector only early-terminates if the sort 
> order matches exactly the index-time sort order. It should also 
> early-terminate when the sort order is a prefix of the index-time sort order.



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