Github user echarles commented on the issue:
https://github.com/apache/zeppelin/pull/2404
@zjffdu yes, but the fix implemented in #2769 only addresses scheduler
isolation per interpreter groups which is a good thing, but not enough to cover
the case we are talking in this PR (isolation per user).
Actually I am running with both #2769 change + the snippet I have given in
https://github.com/apache/zeppelin/pull/2404#issuecomment-372529822 to get a
fully isolated scheduled interpreter groups per user.
cc/ @prabhjyotsingh @wary
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