[jira] [Created] (SPARK-34596) NewInstance.doGenCode should not throw malformed class name error

["Kris Mok (Jira)" <ji...@apache.org>]

Kris Mok created SPARK-34596:
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             Summary: NewInstance.doGenCode should not throw malformed class name error
                 Key: SPARK-34596
                 URL: https://issues.apache.org/jira/browse/SPARK-34596
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 3.0.2, 2.4.7, 3.1.0
            Reporter: Kris Mok


Similar to SPARK-32238 and SPARK-32999, the use of {{java.lang.Class.getSimpleName}} in {{NewInstance.doGenCode}} 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 (fixed in the JDK by https://bugs.java.com/bugdatabase/view_bug.do?bug_id=8057919), 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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