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https://issues.apache.org/jira/browse/PIG-4408?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14305859#comment-14305859
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Brian Johnson commented on PIG-4408:
------------------------------------

so it turns out there is an edge case here that probably has a similar issue to 
PIG-4166
Otherwise the replicated join / merge join combo works fine for 
OrderedLoadFunc. For IndexableLoadFunc the count is too low, not sure what is 
going on there yet.

> Merge join should support replicated join as a predecessor
> ----------------------------------------------------------
>
>                 Key: PIG-4408
>                 URL: https://issues.apache.org/jira/browse/PIG-4408
>             Project: Pig
>          Issue Type: New Feature
>            Reporter: Brian Johnson
>            Assignee: Brian Johnson
>
> Since a replicated join doesn't trigger a reduce or change the output 
> ordering a merge join should work after it



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