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From "Simon Willnauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-8857) Refactor TopDocs#Merge To Take In Custom Tie Breakers
Date Tue, 18 Jun 2019 12:52:00 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-8857?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16866575#comment-16866575
] 

Simon Willnauer commented on LUCENE-8857:
-----------------------------------------

Why don't we just use the comparator and have a default and a doc one? like this:

{code}
 Comparator<ScoreDoc> defaultComparator = Comparator.comparingInt(d -> d.shardIndex);
 Comparator<ScoreDoc> docComparator = Comparator.comparingInt(d -> d.doc);
{code}

> Refactor TopDocs#Merge To Take In Custom Tie Breakers
> -----------------------------------------------------
>
>                 Key: LUCENE-8857
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8857
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Atri Sharma
>            Priority: Major
>         Attachments: LUCENE-8857.patch, LUCENE-8857.patch, LUCENE-8857.patch
>
>
> In LUCENE-8829, the idea of having lambdas passed in to the API to allow finer control
over the process was discussed.
> This JIRA tracks adding a parameter to the API which allows passing in lambdas to define
custom tie breakers, thus allowing users to do custom algorithms when required.
> CC: [~jpountz]  [~simonw] 



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