Github user weand commented on the issue:
https://github.com/apache/zeppelin/pull/2914
@zjffdu are you sure this works when logged out? i followed the call stack
and I'm wondering if there would happen NPE if no AuthenticationInfo is present:
org.apache.zeppelin.notebook.Note.runAll(AuthenticationInfo, boolean)
> org.apache.zeppelin.notebook.Paragraph.execute(boolean) : Line 353
>
org.apache.zeppelin.notebook.Paragraph.setAuthenticationInfo(AuthenticationInfo)
: Line 209 << NPE---
