[GitHub] spark pull request #22903: [SPARK-24196][SQL] Implement Spark's own GetSchem...

[wangyum]

GitHub user wangyum opened a pull request:

    https://github.com/apache/spark/pull/22903

    [SPARK-24196][SQL] Implement Spark's own GetSchemasOperation

    ## What changes were proposed in this pull request?
    
    This PR fix SQL Client tools can't show DBs by implementing Spark's own 
`GetSchemasOperation`.
    
    ## How was this patch tested?
    unit tests and manual tests
    
![image](https://user-images.githubusercontent.com/5399861/47782885-3dd5d400-dd3c-11e8-8586-59a8c15c7020.png)
    
![image](https://user-images.githubusercontent.com/5399861/47782899-4928ff80-dd3c-11e8-9d2d-ba9580ba4301.png)
    


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

    $ git pull https://github.com/wangyum/spark SPARK-24196

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

    https://github.com/apache/spark/pull/22903.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 #22903
    
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commit e4f7205cf07ab9230f1546b70ff115d92184c8b7
Author: Yuming Wang <yumwang@...>
Date:   2018-10-31T10:36:58Z

    Add GetSchemasOperation

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