Github user del680202 commented on the issue: https://github.com/apache/zeppelin/pull/1976 @AhyoungRyu Thanks for your reply. >>But I seem when I edit&save interpreter config then the zombie process will be occurred Sorry, I miss this test case. I test it by current ``branch-0.7`` too. My test steps as below: 1. Execute sample code with ``%python`` in ``global`` mode. 2. Switch python interpreter to ``per user`` mode 3. Restart/Shutdown Zeppelin It looks like a issue of switching interpreter mode function. 
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