Github user jongyoul commented on the issue:
https://github.com/apache/zeppelin/pull/1265
Concerning those modes, AFAIK, before Zeppelin 0.6.0, Zeppelin has only
`shared` mode, but most of users want to run a interpreter with their own,
Zeppelin add two modes called `scoped` and `isolated`. The main difference
between them is where that interpreter is launched. `scoped` mode launches an
interpreter with same process and different thread with its own class loader.
Otherwise, `isolated` launches different process. `per user` and `per note` are
dimensions to support those modes.
@zjffdu I also agree we should try to reduce complexity, but we should try
to keep user experience equally. Zeppelin's users are not only individuals but
also enterprise. We should consider all of users' experience. And I already
argued that issue with @Leemoonsoo, and we conclude that keeping current users'
behaviour is more important than making them simple. I suggest we will start to
discuss the breaking changes. As you mentioned the above, we should think of
the relationship of those components.
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