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https://issues.apache.org/jira/browse/SPARK-16167?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-16167.
---------------------------------
Resolution: Fixed
Fix Version/s: 2.3.0
Issue resolved by pull request 13873
[https://github.com/apache/spark/pull/13873]
> RowEncoder should preserve array/map type nullability.
> ------------------------------------------------------
>
> Key: SPARK-16167
> URL: https://issues.apache.org/jira/browse/SPARK-16167
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Takuya Ueshin
> Fix For: 2.3.0
>
>
> Currently {{RowEncoder}} doesn't preserve nullability of {{ArrayType}} or
> {{MapType}}.
> It returns always {{containsNull = true}} for {{ArrayType}},
> {{valueContainsNull = true}} for {{MapType}} and also the nullability of
> itself is always {{true}}.
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