Merge pull request #107 from astrolabsoftware/iterableFix

Compiling against Apache Spark 2.3.2: fix incompatibilities

Author: JulienPeloton

build.sbt

@@ -43,8 +43,8 @@ lazy val root = (project in file(".")).
    // assemblyShadeRules in assembly := Seq(ShadeRule.rename("nom.**" -> "new_nom.@1").inAll),
    // Put dependencies of the library
    libraryDependencies ++= Seq(
-     "org.apache.spark" %% "spark-core" % "2.1.0" % "provided",
-     "org.apache.spark" %% "spark-sql" % "2.1.0" % "provided",
+     "org.apache.spark" %% "spark-core" % "2.3.2" % "provided",
+     "org.apache.spark" %% "spark-sql" % "2.3.2" % "provided",
      // For loading FITS files
      "com.github.astrolabsoftware" %% "spark-fits" % "0.7.0",
      // "org.datasyslab" % "geospark" % "1.1.3",

src/main/scala/com/spark3d/utils/Utils.scala

@@ -171,6 +171,6 @@ object Utils {
     val ordering = new GuavaOrdering[T] {
       override def compare(l: T, r: T): Int = ord.compare(l, r)
     }
-    ordering.leastOf(input.asJava, num).iterator.asScala
+    ordering.leastOf(input.toIterable.asJava, num).iterator.asScala
   }
 }