Hyukjin Kwon created SPARK-17763:
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Summary: JacksonParser silently parses null as 0 when the field is
not nullable
Key: SPARK-17763
URL: https://issues.apache.org/jira/browse/SPARK-17763
Project: Spark
Issue Type: Improvement
Components: SQL
Reporter: Hyukjin Kwon
It seems {{JacksonParser}} parses the json when the field is not nullable, it
parses some data as 0 silently. For example,
{code}
val testJson = """{"nullInt":null}""" :: Nil
val testSchema = StructType(StructField("nullInt", IntegerType, false) :: Nil)
val data = spark.sparkContext.parallelize(testJson)
spark.read.schema(testSchema).json(data).show()
{code}
shows
{code}
+-------+
|nullInt|
+-------+
| 0|
+-------+
{code}
This will also affect {{from_json}} function.
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