Github user volumeint commented on the issue:
https://github.com/apache/zeppelin/pull/2373
I just submitted a [pull request to
buji-pac4j](https://github.com/bujiio/buji-pac4j/pull/62) to make the value of
Principal.getName() configurable via shiro.ini. We just have to wait for it to
be accepted and released. I will provide some documentation on integrating
with one of the social OAuth providers after I clean up my zeppelin pull
request. An ounce of code can save a pound of documentation.
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