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https://issues.apache.org/jira/browse/SPARK-49761?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chenhao Li resolved SPARK-49761.
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Resolution: Not A Problem
> Fix return type nullability of schema_of_json
> ---------------------------------------------
>
> Key: SPARK-49761
> URL: https://issues.apache.org/jira/browse/SPARK-49761
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 4.0.0, 3.5.2
> Reporter: Chenhao Li
> Priority: Major
>
> The `schema_of_json` expression incorrectly marks its return type as
> non-nullable, which means that it should return a non-null result even for
> null input. This is not true because the expression is actually
> null-intolerant. This error can lead to NPE in the generated code.
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