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Posted to dev@lucene.apache.org by "Michael McCandless (JIRA)" <ji...@apache.org> on 2015/11/03 11:59:27 UTC

[jira] [Commented] (LUCENE-6878) TopDocs.merge should use updateTop instead of pop / add

    [ https://issues.apache.org/jira/browse/LUCENE-6878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14987082#comment-14987082 ] 

Michael McCandless commented on LUCENE-6878:
--------------------------------------------

+1

I know we are discussing how to benchmark this change but I don't think that's needed before committing ... this is a good change ... it's only needed to satisfy curiosity :)

> TopDocs.merge should use updateTop instead of pop / add
> -------------------------------------------------------
>
>                 Key: LUCENE-6878
>                 URL: https://issues.apache.org/jira/browse/LUCENE-6878
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: core/search
>    Affects Versions: Trunk
>            Reporter: Daniel Jelinski
>            Assignee: Adrien Grand
>            Priority: Trivial
>         Attachments: LUCENE-6878.patch
>
>
> The function TopDocs.merge uses PriorityQueue in a pattern: pop, update value (ref.hitIndex++), add. JavaDocs for PriorityQueue.updateTop say that using this function instead should be at least twice as fast.



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