[SPARK-2280] Java & Scala reference docs should describe function reference behavior.

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Incomplete
• Affects Version/s: 1.0.0
• Component/s: Documentation
• Labels: bulk-closed starter
• Assignee: Unassigned
• Reporter: Hans Uhlig
• Created: 25/Jun/14 16:36
• Updated: 21/May/19 05:37
• Resolved: 21/May/19 05:37

Description

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.