[GitHub] [spark] srowen opened a new pull request #26826: [SPARK-30195][SQL][CORE][ML] Change some function, import definitions to work with stricter compiler in Scala 2.13

[GitBox <gi...@apache.org>]

srowen opened a new pull request #26826: [SPARK-30195][SQL][CORE][ML] Change some function, import definitions to work with stricter compiler in Scala 2.13
URL: https://github.com/apache/spark/pull/26826
 
 
   ### What changes were proposed in this pull request?
   
   See https://issues.apache.org/jira/browse/SPARK-30195 for the background; I won't repeat it here. This is sort of a grab-bag of related issues.
   
   ### Why are the changes needed?
   
   To cross-compile with Scala 2.13 later.
   
   ### Does this PR introduce any user-facing change?
   
   No.
   
   ### How was this patch tested?
   
   Existing tests for 2.12. I've been manually checking that this actually resolves the compile problems in 2.13 separately.
   

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