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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SPARK-17763) JacksonParser silently parses null as 0 when the field is not nullable
Date Mon, 03 Oct 2016 07:57:21 GMT

     [ https://issues.apache.org/jira/browse/SPARK-17763?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Apache Spark reassigned SPARK-17763:
------------------------------------

    Assignee: Apache Spark

> 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
>            Assignee: Apache Spark
>
> 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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