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https://issues.apache.org/jira/browse/SPARK-57329?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-57329.
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Fix Version/s: 4.2.0
Resolution: Fixed
Issue resolved by pull request 56382
[https://github.com/apache/spark/pull/56382]
> mode() returns wrong result when input contains both -0.0 and 0.0
> -----------------------------------------------------------------
>
> Key: SPARK-57329
> URL: https://issues.apache.org/jira/browse/SPARK-57329
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 5.0.0
> Reporter: Eric Yang
> Assignee: Eric Yang
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.2.0
>
>
> `mode()` can return a value that is not the most frequent one when the column
> contains both -0.0 and 0.0. - seems like a issue similar to
> https://issues.apache.org/jira/browse/SPARK-57298
> Repro:
> {code:sql}
> SELECT mode(c) FROM VALUES
> (0.0D),(0.0D),(-0.0D),(-0.0D),(9.0D),(9.0D),(9.0D) AS t(c);
> -- returns 9.0, but the correct mode is 0.0
> {code}
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