Github user zjffdu commented on the issue:
https://github.com/apache/zeppelin/pull/2675
@weand In ZEPPELIN-3013, I try to make interpreter name only contains
alphabet ,number and under score, just like valid variable name in most of
programing languages. Is it necessary and normal for you to have special
character in your interpreter ? although it is possible to do that, I would
recommend user don't include special character in interpreter name.---
