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https://issues.apache.org/jira/browse/SPARK-2280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14044780#comment-14044780
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Hans Uhlig commented on SPARK-2280:
-----------------------------------
This looks to be partially done for the Python docs although some more complex
examples might be better.
> 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
>
> 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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