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[SPARK-19550][BUILD][WIP] Addendum: select Java 1.7 for scalac 2.10, still #16983

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[SPARK-19550][BUILD][WIP] Addendum: select Java 1.7 for scalac 2.10, still #16983

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4 changes: 3 additions & 1 deletion project/SparkBuild.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -234,7 +234,9 @@ object SparkBuild extends PomBuild {
},

javacJVMVersion := "1.8",
scalacJVMVersion := "1.8",
// SBT Scala 2.10 build still doesn't support Java 8, because scalac 2.10 doesn't, but,
// it also doesn't touch Java 8 code and it's OK to emit Java 7 bytecode in this case
scalacJVMVersion := (if (System.getProperty("scala-2.10") == "true") "1.7" else "1.8"),

javacOptions in Compile ++= Seq(
"-encoding", "UTF-8",
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