Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/11756#discussion_r56299031
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/json/JsonSuite.scala
---
@@ -963,6 +963,31 @@ class JsonSuite extends QueryTest with
SharedSQLContext with TestJsonData {
)
}
+ test("SPARK-13764 Parse modes in JSON data source") {
+ withSQLConf(SQLConf.COLUMN_NAME_OF_CORRUPT_RECORD.key -> "_unparsed") {
+ // `FAILFAST` mode should throw an exception for corrupt records.
+ val exception = intercept[SparkException] {
+ sqlContext.read.option("mode",
"FAILFAST").json(corruptRecords).collect()
+ }
+ assert(exception.getMessage.contains("Malformed line in FAILFAST
mode: {"))
+
+ // `DROPMALFORMED` mode should skip corrupt records
+ // For `PERMISSIVE` mode, it is tested in "Corrupt records" test.
+ val jsonDF = sqlContext.read.option("mode",
"DROPMALFORMED").json(corruptRecords)
+ val schema = StructType(
+ StructField("_unparsed", StringType, true) ::
+ StructField("a", StringType, true) ::
+ StructField("b", StringType, true) ::
+ StructField("c", StringType, true) :: Nil)
+ assert(schema === jsonDF.schema)
+
+ checkAnswer(
+ jsonDF,
+ Row(null, "str_a_4", "str_b_4", "str_c_4") :: Nil
--- End diff --
And looks like it's always null?
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