Github user markusb79 commented on a diff in the pull request:
https://github.com/apache/spark/pull/16648#discussion_r105496069
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/DataFrameComplexTypeSuite.scala ---
@@ -64,6 +65,24 @@ class DataFrameComplexTypeSuite extends QueryTest with
SharedSQLContext {
val ds100_5 = Seq(S100_5()).toDS()
ds100_5.rdd.count
}
+
+ test("SPARK-18016 Constant Pool Past Limit for Wide/Nested Dataset") {
+ val schema = StructType(
+ (0 to 10000).map(n â StructField(s"column_$n", StringType))
+ )
+
+ val values = schema.map(_ â null)
+ val rows = spark.sparkContext.parallelize(Seq(Row(values:_*)))
+ val frame = spark.sqlContext.createDataFrame(rows, schema)
+
+ frame.show()
+// .write
--- End diff --
Might be good to remove these commented lines before the merge.
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