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Posted to issues@spark.apache.org by "Hyukjin Kwon (Jira)" <ji...@apache.org> on 2020/03/23 11:14:00 UTC
[jira] [Updated] (SPARK-31227) Non-nullable null type should not
coerce to nullable type
[ https://issues.apache.org/jira/browse/SPARK-31227?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hyukjin Kwon updated SPARK-31227:
---------------------------------
Affects Version/s: (was: 3.0.0)
3.1.0
> Non-nullable null type should not coerce to nullable type
> ---------------------------------------------------------
>
> Key: SPARK-31227
> URL: https://issues.apache.org/jira/browse/SPARK-31227
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.1.0
> Reporter: Hyukjin Kwon
> Priority: Minor
>
> {code}
> scala> spark.range(10).selectExpr("array()").printSchema()
> root
> |-- array(): array (nullable = false)
> | |-- element: null (containsNull = false)
> scala> spark.range(10).selectExpr("concat(array()) as arr").printSchema()
> root
> |-- arr: array (nullable = false)
> | |-- element: null (containsNull = false)
> scala> spark.range(10).selectExpr("concat(array(), array(1)) as arr").printSchema()
> root
> |-- arr: array (nullable = false)
> | |-- element: integer (containsNull = true)
> {code}
> The last case should not coerce to nullable type.
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