Sean Owen created SPARK-27536:
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Summary: Code improvements for 3.0: existentials edition
Key: SPARK-27536
URL: https://issues.apache.org/jira/browse/SPARK-27536
Project: Spark
Issue Type: Improvement
Components: ML, Spark Core, SQL, Structured Streaming
Affects Versions: 3.0.0
Reporter: Sean Owen
Assignee: Sean Owen
The Spark code base makes use of 'existential types' in Scala, a language
feature which is quasi-deprecated -- it generates a warning unless
scala.language.existentials is imported, and there is talk of removing it from
future Scala versions:
https://contributors.scala-lang.org/t/proposal-to-remove-existential-types-from-the-language/2785
We can get rid of most usages of this feature with lots of minor changes to the
code. A PR is coming to demonstrate what's involved.
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