Github user srowen commented on a diff in the pull request: https://github.com/apache/spark/pull/22975#discussion_r231977746 --- Diff: project/SparkBuild.scala --- @@ -650,10 +651,13 @@ object Assembly { }, jarName in (Test, assembly) := s"${moduleName.value}-test-${version.value}.jar", mergeStrategy in assembly := { - case m if m.toLowerCase.endsWith("manifest.mf") => MergeStrategy.discard - case m if m.toLowerCase.matches("meta-inf.*\\.sf$") => MergeStrategy.discard + case m if m.toLowerCase(Locale.ROOT).endsWith("manifest.mf") --- End diff -- I agree with these.
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