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https://issues.apache.org/jira/browse/SPARK-2280?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-2280.
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Resolution: Incomplete
> Java & Scala reference docs should describe function reference behavior.
> ------------------------------------------------------------------------
>
> Key: SPARK-2280
> URL: https://issues.apache.org/jira/browse/SPARK-2280
> Project: Spark
> Issue Type: Improvement
> Components: Documentation
> Affects Versions: 1.0.0
> Reporter: Hans Uhlig
> Priority: Minor
> Labels: bulk-closed, starter
>
> Example
> <K> JavaPairRDD<K,Iterable<T>> groupBy(Function<T,K> f)
> Return an RDD of grouped elements. Each group consists of a key and a
> sequence of elements mapping to that key.
> T and K are not described and there is no explanation of what the function's
> inputs and outputs should be and how GroupBy uses this information.
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