Github user zjffdu commented on the issue:
https://github.com/apache/zeppelin/pull/2350
Thanks @sergeymazin for the contribution. But I am afraid the right fix
should be delegating the `getProcess` to the inner `sparkInterpreter` of
`LivySparkSQLInterpreter`. Otherwise although we fix the NPE, we still could
not get the right progress. Could you help to update the PR ? Thanks
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