[SPARK-23428] Revert [SPARK-23094] Fix invalid character handling in JsonDataSource

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Invalid
• Affects Version/s: 2.3.0
• Component/s: SQL
• Target Version/s: 2.3.0
• Assignee: Xiao Li
• Reporter: Xiao Li
• Created: 14/Feb/18 21:50
• Updated: 14/Feb/18 23:15
• Resolved: 14/Feb/18 23:15

Description

  test("invalid json with leading nulls - from dataset") {
    import testImplicits._
    withTempDir { tempDir =>
      val path = tempDir.getAbsolutePath
      Seq("""{"firstName":"Chris", "lastName":"Baird"}""",
        """{"firstName":"Doug", "lastName":"Rood"}""").toDS().write.mode("overwrite").text(path)
      val schema = new StructType().add("a", IntegerType).add("_corrupt_record", StringType)
      val jsonDF = spark.read.schema(schema).option("mode", "DROPMALFORMED").json(path)
      checkAnswer(jsonDF, Seq(
        Row("Chris", "Baird"), Row("Doug", "Rood")
      ))
    }
  }

After this PR it returns a wrong answer.

[null,null]
[null,null]

Issue Links

• relates to: SPARK-23094 Json Readers choose wrong encoding when bad records are present and fail