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https://issues.apache.org/jira/browse/SPARK-13561?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Cheng Lian deleted SPARK-13561:
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> Migrate Dataset untyped aggregations
> ------------------------------------
>
> Key: SPARK-13561
> URL: https://issues.apache.org/jira/browse/SPARK-13561
> Project: Spark
> Issue Type: Sub-task
> Reporter: Cheng Lian
>
> Should migrate the following methods and corresponding tests to Dataset:
> {noformat}
> - Aggregations
> - Typed aggregations (depends on GroupedDataset)
> - groupBy[K: Encoder](T => K): GroupedDataset[K, T] // rename to
> groupByKey
> - groupBy[K](MapFunction[T, K], Encoder[K]): GroupedDataset[K, T] //
> Rename to groupByKey
> - count
> {noformat}
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