[
https://issues.apache.org/jira/browse/SPARK-23773?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Sergey updated SPARK-23773:
---------------------------
Issue Type: Bug (was: Improvement)
> JacksonGenerator does not include keys that have null value for StructTypes
> ---------------------------------------------------------------------------
>
> Key: SPARK-23773
> URL: https://issues.apache.org/jira/browse/SPARK-23773
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.0.0, 2.3.0
> Reporter: Sergey
> Priority: Trivial
>
> When "toJSON" is called on a dataset, the result JSON string will not have
> keys displayed for StructTypes that have null value.
> Repro:
> {noformat}
> scala> val sqlContext = new org.apache.spark.sql.SQLContext(sc)
> ...
> scala> val df = sqlContext.sql(""" select NAMED_STRUCT('f1', null, 'f2',
> ARRAY(TRUE, FALSE), 'f3', MAP(123L, 123.456), 'f4', 'some string') as
> my_struct """)
> ...
> scala> df.toJSON.collect().foreach(println)
> {"my_struct":{"f2":[true,false],"f3":({"123":123.456},"f4":"some string"}}
> {noformat}
> The key "f1" is missing in JSON string.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
