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https://issues.apache.org/jira/browse/FLINK-4205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15420281#comment-15420281
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ASF GitHub Bot commented on FLINK-4205:
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Github user doflink commented on the issue:
https://github.com/apache/flink/pull/2267
Till Rohrmann had a look, this pull request needs some more works.
Therefore, I think you should not spend time to review it for now.
> Implement stratified sampling for DataSet
> -----------------------------------------
>
> Key: FLINK-4205
> URL: https://issues.apache.org/jira/browse/FLINK-4205
> Project: Flink
> Issue Type: New Feature
> Components: DataSet API
> Reporter: Do Le Quoc
>
> Since a Dataset might consist of data from disparate sources. As such, every
> data source should be considered fairly to have a representative sample. For
> this, stratified sampling is needed to ensure that data from every source
> (stratum) is selected and none of the minorities are excluded.
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