Github user DrIgor commented on the issue: https://github.com/apache/zeppelin/pull/1911 I tried to wrap with `ClassloaderInterpreter` and it works But I don't like this solution. We force every user of `IgniteInterpreter` to wrap it with `ClassloaderInterpreter`. It's very easy to broke this test again. For example, to add new test and forget about wrapping. It looks like dirty fix for me. `IgniteInterpreter` is still broker and we try to reduce negative effects by wrapper. I think it is acceptable for third party libraries when we can't change sources. But if we can fix original code we should do it If you think that wrapper is more appropriate I will update PR
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