reswqa opened a new pull request, #22294:
URL: https://github.com/apache/flink/pull/22294
## What is the purpose of the change
*Currently, method OperationExecutor#executeStatement in sql client will
wrap currently with
`sessionContext.getSessionState().resourceManager.getUserClassLoader()`.
Actually, it's not necessary.*
*It'll will cause the exception `Trying to access closed classloader. Please
check if you store xxx` after quiting sql client.
The reason is in `ShutdownHookManager`, it will register a hook after jvm
shutdown. In `ShutdownHookManager`, it will
create `Configuration`. It will then access
`Thread.currentThread().getContextClassLoader()` which is
`FlinkUserClassLoader`, the `FlinkUserClassLoader` has been closed before. So,
it'll then cause `Trying to access closed classloader` exception.*
## Brief change log
- *OperationExecutor is no longer set context classloader when executing
statement.*
## Verifying this change
This change is a trivial rework / code cleanup without any test coverage.
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): no
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: no
- The serializers: no
- The runtime per-record code paths (performance sensitive): no
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn, ZooKeeper: no
- The S3 file system connector: no
## Documentation
- Does this pull request introduce a new feature? no
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