[GitHub] zeppelin pull request #2670: [ZEPPELIN-3052] Chrome console: TypeError: Cann...

[buxiaoliang]

GitHub user buxiaoliang opened a pull request:

    https://github.com/apache/zeppelin/pull/2670

    [ZEPPELIN-3052] Chrome console: TypeError: Cannot set property 'principal' 
of undefined

    ### What is this PR for?
    To fix console error when user logout after Apache Shiro enabled.
    
    
    ### What type of PR is it?
    [Bug Fix]
    
    
    ### What is the Jira issue?
    * Open an issue on Jira https://issues.apache.org/jira/browse/ZEPPELIN-3052
    
    ### Screenshots
    
![image](https://user-images.githubusercontent.com/11644623/32828564-6754c6cc-ca2a-11e7-9020-52a0e8817741.png)
    
    ### Questions:
    * Does the licenses files need update? No
    * Is there breaking changes for older versions? No
    * Does this needs documentation? No


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/buxiaoliang/zeppelin master

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/zeppelin/pull/2670.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #2670
    
----
commit 850c2fd259090dd9489d3602ad51aba276c24d19
Author: bur <robert.x...@emc.com>
Date:   2017-11-15T09:19:15Z

    [ZEPPELIN-3052] Chrome console: TypeError: Cannot set property 'principal' 
of undefined

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