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https://issues.apache.org/jira/browse/PIG-2673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13270719#comment-13270719
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Ashutosh Chauhan commented on PIG-2673:
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I took a quick look at your patch. For chaining together of MR jobs (i.e.,
order-by MR job feeding into merge-join MR job), you will need changes in
MRCompiler which are outlined in PIG-959 patch. I don't see any of that in your
patch. There must be something which I am missing here.
> Allow Merge join to follow an ORDER statement
> ---------------------------------------------
>
> Key: PIG-2673
> URL: https://issues.apache.org/jira/browse/PIG-2673
> Project: Pig
> Issue Type: Improvement
> Reporter: Dmitriy V. Ryaboy
> Assignee: Dmitriy V. Ryaboy
> Attachments: PIG-2673_0.patch
>
>
> Currently, we insist that data for a merge join must come from an
> OrderedLoadFunc.
> We can relax this condition and allow explicit ordering operations to precede
> a MergeJoin.
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