Github user pjfanning commented on a diff in the pull request:
https://github.com/apache/spark/pull/16895#discussion_r101460138
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/json/JsonSuite.scala
---
@@ -1364,10 +1364,11 @@ class JsonSuite extends QueryTest with
SharedSQLContext with TestJsonData {
})
}
- test("SPARK-6245 JsonRDD.inferSchema on empty RDD") {
+ test("SPARK-6245 JsonRDD.inferSchema on empty Dataset") {
// This is really a test that it doesn't throw an exception
+ val emptyDataset = spark.createDataset(empty)(Encoders.STRING)
--- End diff --
RDD[_] only has toDS() function added when SQLImplicits applies an implicit
conversion to wrap the RDD as a DatasetHolder.
import sparkSession.sqlContext.implicits._
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