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https://issues.apache.org/jira/browse/FLINK-2312?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14631653#comment-14631653
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Sachin Goel commented on FLINK-2312:
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Hey [~pietropinoli]
I've already started working on this. Forgot to assign it to myself. Apologies. 
If you want, we can sync our work, in case you've already worked on it. 
Otherwise, you can contribute to it. I'll create a PR as WIP soon.

> Random Splits
> -------------
>
>                 Key: FLINK-2312
>                 URL: https://issues.apache.org/jira/browse/FLINK-2312
>             Project: Flink
>          Issue Type: Wish
>          Components: Machine Learning Library
>            Reporter: Maximilian Alber
>            Assignee: pietro pinoli
>            Priority: Minor
>
> In machine learning applications it is common to split data sets into f.e. 
> training and testing set.
> To the best of my knowledge there is at the moment no nice way in Flink to 
> split a data set randomly into several partitions according to some ratio.
> The wished semantic would be the same as of Sparks RDD randomSplit.



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