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https://issues.apache.org/jira/browse/SPARK-4728?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14242924#comment-14242924
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RJ Nowling commented on SPARK-4728:
-----------------------------------

I posted a PR for this issue:
https://github.com/apache/spark/pull/3680

> Add exponential, log normal, and gamma distributions to data generator to 
> MLlib
> -------------------------------------------------------------------------------
>
>                 Key: SPARK-4728
>                 URL: https://issues.apache.org/jira/browse/SPARK-4728
>             Project: Spark
>          Issue Type: New Feature
>          Components: MLlib
>    Affects Versions: 1.1.0
>            Reporter: RJ Nowling
>            Priority: Minor
>
> MLlib supports sampling from normal, uniform, and Poisson distributions.  
> I'd like to add support for sampling from exponential, gamma, and log normal 
> distributions, using the features of math3 like the other generators.
> Please assign this to me.



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