Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/15771#discussion_r86610677
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/JsonFunctionsSuite.scala ---
@@ -114,6 +116,18 @@ class JsonFunctionsSuite extends QueryTest with
SharedSQLContext {
Row(Row(null)) :: Nil)
}
+ test("from_json null column with parquet source") {
+ withTempDir { dir =>
+ Seq("""{"a": 1}""").toDF("value").write.parquet(new File(dir,
"p=x").toString)
+ Seq("""{"a": 2}""").toDF("record").write.parquet(new File(dir,
"p=y").toString)
+ val schema = new StructType().add("a", IntegerType)
+ val df = spark.read.parquet(dir.toString)
--- End diff --
Why parquet? Seems this is testing more than it needs to (and thus runs
slower).
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