[jira] [Resolved] (LUCENE-9451) Sort.rewrite doesn't always return this when unchanged

["Mike Drob (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-9451?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mike Drob resolved LUCENE-9451.
-------------------------------
    Fix Version/s: master (9.0)
       Resolution: Fixed

> Sort.rewrite doesn't always return this when unchanged
> ------------------------------------------------------
>
>                 Key: LUCENE-9451
>                 URL: https://issues.apache.org/jira/browse/LUCENE-9451
>             Project: Lucene - Core
>          Issue Type: Bug
>          Components: core/search
>    Affects Versions: 8.7
>            Reporter: Mike Drob
>            Assignee: Mike Drob
>            Priority: Major
>             Fix For: master (9.0)
>
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> Sort.rewrite doesn't always return {{this}} as advertised in the Javadoc even if the underlying fields are unchanged. This is because the comparison uses reference equality.
> There are two solutions we can do here, 1) switch from reference equality to object equality, and 2) fix some of the underlying sort fields to not create unnecessary objects.
> cc: [~jpountz] [~romseygeek]



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