[jira] [Commented] (SPARK-24734) Fix containsNull of Concat for array type.

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-24734?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16531229#comment-16531229 ] 

Apache Spark commented on SPARK-24734:
--------------------------------------

User 'ueshin' has created a pull request for this issue:
https://github.com/apache/spark/pull/21704

> 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
>            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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