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https://issues.apache.org/jira/browse/SPARK-17185?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-17185.
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Resolution: Won't Fix
I think the point is reasonable but I'm pretty sure we would not change the API
or even introduce deprecations plus new methods just for this.
> Unify naming of API for RDD and Dataset
> ---------------------------------------
>
> Key: SPARK-17185
> URL: https://issues.apache.org/jira/browse/SPARK-17185
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core, SQL
> Reporter: Xiang Gao
> Priority: Minor
>
> In {{RDD}}, {{groupByKey}} is used to generate a key-list pair and
> {{aggregateByKey}} is used to do aggregation.
> In {{Dataset}}, aggregation is done by {{groupBy}} and {{groupByKey}}, and no
> API for key-list pair is provided.
> The same name {{groupBy}} is designed to do different things and this might
> be be confusing. Besides, it would be more convenient to provide API to
> generate key-list pair for {{Dataset}}.
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