Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/3193#discussion_r20255530
--- Diff: core/src/main/scala/org/apache/spark/api/python/PythonRDD.scala
---
@@ -757,6 +757,19 @@ private[spark] object PythonRDD extends Logging {
converted.saveAsHadoopDataset(new JobConf(conf))
}
}
+
+ /**
+ * A helper to convert java.util.List[Double] into Array[Double]
+ * @param list
+ * @return
+ */
+ def listToArrayDouble(list: JList[Double]): Array[Double] = {
+ val r = new Array[Double](list.size)
+ list.zipWithIndex.foreach {
--- End diff --
Is it the same as `list.asScala.toArray`?
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