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https://issues.apache.org/jira/browse/SPARK-32999?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun resolved SPARK-32999.
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Fix Version/s: 3.1.0
3.0.2
Assignee: Kris Mok
Resolution: Fixed
> TreeNode.nodeName should not throw malformed class name error
> -------------------------------------------------------------
>
> Key: SPARK-32999
> URL: https://issues.apache.org/jira/browse/SPARK-32999
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.4.0, 3.0.0, 3.1.0
> Reporter: Kris Mok
> Assignee: Kris Mok
> Priority: Major
> Fix For: 3.0.2, 3.1.0
>
>
> Similar to SPARK-32238, the use of {{java.lang.Class.getSimpleName}} in
> {{TreeNode.nodeName}} is problematic because Scala classes may trigger
> {{java.lang.InternalError: Malformed class name}}.
> This happens more often when using nested classes in Scala (or declaring
> classes in Scala REPL which implies class nesting).
> Note that on newer versions of JDK the underlying malformed class name no
> longer reproduces, so it's less of an issue there. But on JDK8u this problem
> still exists so we still have to fix it.
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