[GitHub] zeppelin pull request #2572: [ZEPPELIN-2919] fix: Fallback to table when vis...

[1ambda]

GitHub user 1ambda opened a pull request:

    https://github.com/apache/zeppelin/pull/2572

    [ZEPPELIN-2919] fix: Fallback to table when vis is not available

    ### What is this PR for?
    
    fallback to table when vis is not available. 
    
    The erroneous situation can happen when
    
    - user enabled helium visualization
    - and open the visualization in paragraph
    - and disabled the helium visualization
    - and open again the paragraph. 
    - then you will see the empty paragraph because the specific visualization 
is now not available
    
    ### What type of PR is it?
    [Bug Fix]
    
    ### What is the Jira issue?
    
    [ZEPPELIN-2919](https://issues.apache.org/jira/browse/ZEPPELIN-2919)
    
    ### How should this be tested?
    
    - user enabled helium visualization
    - and open the visualization in paragraph
    - and disabled the helium visualization
    - and open again the paragraph with **refresh**
    
    ### Screenshots (if appropriate)
    
    #### Before
    
    
![2919_before](https://user-images.githubusercontent.com/4968473/30196276-66a182da-949a-11e7-8208-6bb4e4643833.gif)
    
    #### After
    
    
![2919_after](https://user-images.githubusercontent.com/4968473/30196278-68cced10-949a-11e7-8527-1c233f5fbbc1.gif)
    
    ### 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/1ambda/zeppelin 
ZEPPELIN-2919/fallback-to-table-when-vis-is-not-available

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

    https://github.com/apache/zeppelin/pull/2572.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 #2572
    
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commit e9ca08d3d5bd53056e4bc02c201fc2d434b5e016
Author: 1ambda <1am...@gmail.com>
Date:   2017-09-08T04:19:35Z

    fix: Fallback to table when helium is not avaiable

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