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https://issues.apache.org/jira/browse/SPARK-24734?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-24734:
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Assignee: Apache Spark
> Fix containsNull of Concat for array type.
> ------------------------------------------
>
> Key: SPARK-24734
> URL: https://issues.apache.org/jira/browse/SPARK-24734
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.4.0
> Reporter: Takuya Ueshin
> Assignee: Apache Spark
> Priority: Major
>
> Currently {{Concat}} for array type uses the data type of the first child as
> its own data type, but the children might include an array containing nulls.
> We should aware the nullabilities of all children.
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