Sean R. Owen created SPARK-30009:
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Summary: 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
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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