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

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

Mike Drob created LUCENE-9451:
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             Summary: 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


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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