Github user liancheng commented on a diff in the pull request:
https://github.com/apache/spark/pull/12952#discussion_r62345191
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/SparkSession.scala
---
@@ -463,7 +463,12 @@ class SparkSession private(
*/
@Experimental
def range(start: Long, end: Long, step: Long, numPartitions: Int):
Dataset[java.lang.Long] = {
- new Dataset(self, Range(start, end, step, numPartitions),
Encoders.LONG)
+ val encoder = {
+ val schema = StructType(Seq(StructField("id", LongType, nullable =
false)))
+ ExpressionEncoder[java.lang.Long]().copy[java.lang.Long](schema =
schema)
+ }
+
+ new Dataset(self, Range(start, end, step, numPartitions), encoder)
--- End diff --
We are now using the encoder schema as Dataset schema, thus we need to
rename the default primitive encoder column name "value" to the desired name.
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