[jira] [Created] (SPARK-17763) JacksonParser silently parses null as 0 when the field is not nullable

["Hyukjin Kwon (JIRA)" <ji...@apache.org>]

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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