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https://issues.apache.org/jira/browse/LUCENE-7713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17567202#comment-17567202
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Lu Xugang commented on LUCENE-7713:
-----------------------------------
Hi [~jpountz], it seems like there is no need to do comparison or collecting by
PriorityQueue when the search sort order is a prefix of the index sort order.
This issue still existed, should we need to do this optimization?
> Optimize TopFieldDocCollector for the sorted case
> -------------------------------------------------
>
> Key: LUCENE-7713
> URL: https://issues.apache.org/jira/browse/LUCENE-7713
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Priority: Minor
>
> When the sort order is a prefix of the index sort order,
> {{TopFieldDocCollector}} could skip reading doc values and comparing them
> against the bottom value after {{numHits}} documents have been collected, and
> just count matches.
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