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Subject [GitHub] [spark] srowen opened a new pull request #25980: [WIP][SPARK-29296][BUILD][CORE] Remove use of .par to make 2.13 support easier; add scala-2.13 profile to enable pulling in par collections library separately, for the future
Date Mon, 30 Sep 2019 17:03:42 GMT
srowen opened a new pull request #25980: [WIP][SPARK-29296][BUILD][CORE] Remove use of .par
to make 2.13 support easier; add scala-2.13 profile to enable pulling in par collections library
separately, for the future
URL: https://github.com/apache/spark/pull/25980
 
 
   ### What changes were proposed in this pull request?
   
   Scala 2.13 removes the parallel collections classes to a separate library, so first, this
establishes a `scala-2.13` profile to bring it back, for future use.
   
   However the library enables use of `.par` implicit conversions via a new class that is
not in 2.12, which makes cross-building hard. This implements a suggested workaround from
https://github.com/scala/scala-parallel-collections/issues/22 to avoid `.par` entirely.
   
   
   ### Why are the changes needed?
   
   To compile for 2.13 and later to work with 2.13.
   
   ### Does this PR introduce any user-facing change?
   
   Should not, no.
   
   ### How was this patch tested?
   
   Existing tests.

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