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https://issues.apache.org/jira/browse/SPARK-39419?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17552912#comment-17552912
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Apache Spark commented on SPARK-39419:
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User 'ueshin' has created a pull request for this issue:
https://github.com/apache/spark/pull/36835
> When the comparator of ArraySort returns null, it should fail.
> --------------------------------------------------------------
>
> Key: SPARK-39419
> URL: https://issues.apache.org/jira/browse/SPARK-39419
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.3.0
> Reporter: Takuya Ueshin
> Priority: Major
>
> When the comparator of {{ArraySort}} returns {{null}}, currently it handles
> it as {{0}} (equal).
> According to the doc,
> {quote}
> It returns -1, 0, or 1 as the first element is less than, equal to, or
> greater than the second element. If the comparator function returns other
> values (including null), the function will fail and raise an error.
> {quote}
> It's fine to return non -1, 0, 1 integers to follow the Java convention
> (still need to update the doc, though), but it should throw an exception for
> {{null}} result.
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