StephanEwen commented on issue #11196: [FLINK-16246][connector kinesis] Exclude AWS SDK MBean registry from Kinesis build URL: https://github.com/apache/flink/pull/11196#issuecomment-591347938 @hwanju You just gave me an idea here: What if we expose something like `getUserCodeClassLoader().registerCleanupHook(Runnable)`? Then one could register an MBean unregister action, a thread shutdown action, etc. whatever helps. Prerequisites for that would be: - Changing the type of the user code class loader to `FlinkDynamicClassLoader extends ClassLoader`. - Adjusting methods like `RuntimeContext.getUserCodeClassLoader();` to return that type. - Adding a `registerCleanupHook(Runnable)` method on the `FlinkDynamicClassLoader` class and calls these hooks in the `close()` method. - This also should go together well with [FLINK-16245](https://issues.apache.org/jira/browse/FLINK-16245)
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