Tartarus0zm commented on PR #19608:
URL: https://github.com/apache/flink/pull/19608#issuecomment-1118223620
> > This PR is to solve the problem that the current HiveParserSessionState
cannot be initialized under JDK11.
>
> Can you explain how that helps if Hive doesn't work under Java 11?
@MartijnVisser AppClassLoader is a subclass of URLClassLoader in JDK8, but
AppClassLoader is no longer a subclass of URLClassLoader in JDK11.
The low version Hive SessionState code is like this,
```
final ClassLoader currentLoader =
Utilities.createUDFClassLoader((URLClassLoader) parentLoader, new String[]{});
```
Therefore, running with jdk11 will report an error, versions after 2.3.6
fixed this problem.
[HIVE-21584]([https://issues.apache.org/jira/browse/HIVE-21584]) fixed it.
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