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https://issues.apache.org/jira/browse/PIG-1458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12897484#action_12897484
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Richard Ding commented on PIG-1458:
-----------------------------------

For 1. and 2. above, another approach is to do nothing and rely on 
MultiFileInputFormat (PIG-1518) to merge small files. 

> aggregate files for replicated join
> -----------------------------------
>
>                 Key: PIG-1458
>                 URL: https://issues.apache.org/jira/browse/PIG-1458
>             Project: Pig
>          Issue Type: Improvement
>            Reporter: Olga Natkovich
>            Assignee: Richard Ding
>             Fix For: 0.8.0
>
>
> We have noticed that if the smaller data in replicated join has many files, 
> this puts  unneeded burden on the name node. pre-aggregating the files can 
> improve the situation

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