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https://issues.apache.org/jira/browse/SPARK-2969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14092671#comment-14092671
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Apache Spark commented on SPARK-2969:
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User 'ueshin' has created a pull request for this issue:
https://github.com/apache/spark/pull/1889
> Make ScalaReflection be able to handle MapType.containsNull and
> MapType.valueContainsNull.
> ------------------------------------------------------------------------------------------
>
> Key: SPARK-2969
> URL: https://issues.apache.org/jira/browse/SPARK-2969
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Takuya Ueshin
>
> Make {{ScalaReflection}} be able to handle like:
> - Seq\[Int] as ArrayType(IntegerType, containsNull = false)
> - Seq\[java.lang.Integer] as ArrayType(IntegerType, containsNull = true)
> - Map\[Int, Long] as MapType(IntegerType, LongType, valueContainsNull = false)
> - Map\[Int, java.lang.Long] as MapType(IntegerType, LongType,
> valueContainsNull = true)
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