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https://issues.apache.org/jira/browse/SPARK-18299?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun resolved SPARK-18299.
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Resolution: Fixed
Fix Version/s: 3.0.0
This is resolved via https://github.com/apache/spark/pull/24993
> Allow more aggregations on KeyValueGroupedDataset
> -------------------------------------------------
>
> Key: SPARK-18299
> URL: https://issues.apache.org/jira/browse/SPARK-18299
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Matthias Niehoff
> Priority: Minor
> Fix For: 3.0.0
>
>
> The number of possible aggregations on a KeyValueGroupedDataset created by
> groupByKey is limited to 4, as there are only methods with a maximum of 4
> parameters.
> This value should be increased or - even better - made be completely
> unlimited.
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