[jira] [Resolved] (TEZ-276) N input N output Mapper/Reducer

["Hitesh Shah (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TEZ-276?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hitesh Shah resolved TEZ-276.
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    Resolution: Won't Fix

The processor interface already support multiple inputs and outputs. However, MapProcessor and ReduceProcessor which support MR will always only accept a single input and output.  

> N input N output Mapper/Reducer
> -------------------------------
>
>                 Key: TEZ-276
>                 URL: https://issues.apache.org/jira/browse/TEZ-276
>             Project: Apache Tez
>          Issue Type: New Feature
>            Reporter: Achal Soni
>
> This ask is for a N input/N output mapper/reducer processor. This is the only thing (I believe) standing in the way of a fully arbitrary dag. Instead of having to create separate dags in Pig to get around this, the sooner this is done the better as we will be closer to a more fully finished product. 
> If we can agree on semantics of N output mapper/reducer (how we would expose to the mapper and reducer), then I can prototype on local mode in the meantime. 



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