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From: "Sean Owen (JIRA)" <jira@apache.org>
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Subject: [jira] [Updated] (SPARK-2280) Java & Scala reference docs should
 describe function reference behavior.
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     [ https://issues.apache.org/jira/browse/SPARK-2280?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen updated SPARK-2280:
-----------------------------
    Priority: Minor  (was: Major)
    Assignee: Sean Owen

I'd like to work on this, but, would a change to add a bunch of {{@tparam}} in all the RDD classes going to be welcome or too much merge noise? It's not hard to describe all of these params.

> 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
>            Assignee: Sean Owen
>            Priority: Minor
>
> 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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