Github user Leemoonsoo commented on the issue: https://github.com/apache/zeppelin/pull/1911 Thanks @DrIgor for fix and explanation of the issue! When RemoteInterpreterServer creates Interpreter, it [wraps interpreter instance with LazyOpenInterpreter](https://github.com/apache/zeppelin/blob/master/zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/remote/RemoteInterpreterServer.java#L187). If we wrap interpreter instance with [ClassLoaderInterpreter](https://github.com/apache/zeppelin/blob/master/zeppelin-interpreter/src/main/java/org/apache/zeppelin/interpreter/ClassloaderInterpreter.java) as well, like [zeppelin do when creating interpreter locally](https://github.com/apache/zeppelin/blob/ae1cb0527bc223b25761e1370618929e228183f8/zeppelin-zengine/src/main/java/org/apache/zeppelin/interpreter/InterpreterFactory.java#L1123), then every interpreter will benefit by ClassloaderInterpreter. ClassloaderInterpreter restores classloader after methods call. @DrIgor @jongyoul Shell we try make RemoteInterpreterServer wrap interpreter with ClassloaderInterpreter? what do you think?
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