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https://issues.apache.org/jira/browse/SPARK-30009?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun resolved SPARK-30009.
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Fix Version/s: 3.0.0
Resolution: Fixed
Issue resolved by pull request 26654
[https://github.com/apache/spark/pull/26654]
> Replace Ordering.Double with Ordering.Double.TotalOrdering
> ----------------------------------------------------------
>
> Key: SPARK-30009
> URL: https://issues.apache.org/jira/browse/SPARK-30009
> Project: Spark
> Issue Type: Sub-task
> Components: Spark Core, SQL
> Affects Versions: 3.0.0
> Reporter: Sean R. Owen
> Assignee: Sean R. Owen
> Priority: Minor
> Fix For: 3.0.0
>
>
> Scala 2.12 replaces {{Ordering.Double}} with either of
> {{Ordering.Double.TotalOrdering}} (same behavior, NaN compares consistently)
> or {{Ordering.Double.IeeeOrdering}} (consistent with
> java.lang.Double.compare, NaN always compares false, for example). Neither is
> available in both versions, and it doesn't seem like a compat library exists
> to handle this.
> This can be accomplished by inlining the implementation of
> {{Ordering.Double}} so that both can use it. Or, parallel source trees for
> 2.12 / 2.13. The latter wouldn't be worth it just for this, but I'm fairly
> sure a few things will require it anyway.
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