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Posted to issues@lucene.apache.org by "Alan Woodward (Jira)" <ji...@apache.org> on 2021/04/27 14:01:00 UTC

[jira] [Created] (LUCENE-9940) The order of disjuncts in DisjunctionMaxQuery affects equals() impl

Alan Woodward created LUCENE-9940:
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             Summary: The order of disjuncts in DisjunctionMaxQuery affects equals() impl
                 Key: LUCENE-9940
                 URL: https://issues.apache.org/jira/browse/LUCENE-9940
             Project: Lucene - Core
          Issue Type: Bug
            Reporter: Alan Woodward
            Assignee: Alan Woodward


DisjunctionMaxQuery stores its disjuncts in a java array, and its equals() implementation uses Arrays.equal() when checking equality.  This means that two queries with the same disjuncts but added in a different order will compare as different, even though their results will be identical.  We should replace the array with a Set.



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