GitHub user viirya opened a pull request:

    https://github.com/apache/spark/pull/20817

    [SPARK-23599][SQL] Add a UUID generator from Pseudo-Random Numbers

    ## What changes were proposed in this pull request?
    
    This patch adds a UUID generator from Pseudo-Random Numbers. We can use it 
later to have deterministic `UUID()` expression.
    
    ## How was this patch tested?
    
    Added unit tests.


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

    $ git pull https://github.com/viirya/spark-1 SPARK-23599

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

    https://github.com/apache/spark/pull/20817.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 #20817
    
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commit b7bce25f83622c4adb97dd03e7414811770d7d4d
Author: Liang-Chi Hsieh <viirya@...>
Date:   2018-03-14T05:31:13Z

    Add a UUID generator from Pseudo-Random Numbers.

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