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https://issues.apache.org/jira/browse/MRUNIT-64?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13216658#comment-13216658
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Jim Donofrio commented on MRUNIT-64:
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And just to clarify by multiple inputs we are talking about giving a mapper or 
reducer class multiple sets of key, value pairs not using the MultipleInputs 
class. However, what is your thought on adding support for the MultipleInputs 
class to the MapReduceDriver. A user would then test their different mappers 
for multiple inputs with the MapDriver and could then test the combination of 
the mappers with a reducer in the MapReduceDriver class
                
> Multiple Input Key, Value Pairs should be supported
> ---------------------------------------------------
>
>                 Key: MRUNIT-64
>                 URL: https://issues.apache.org/jira/browse/MRUNIT-64
>             Project: MRUnit
>          Issue Type: Improvement
>            Reporter: Brock Noland
>
> The comments on MRUNIT-14 brought up a great point. The API today only allows 
> a single key value pair input. In many scenarios multiple inputs would be 
> useful.

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