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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PIG-2673) Allow Merge join to follow an ORDER statement
Date Tue, 08 May 2012 18:59:51 GMT

    [ https://issues.apache.org/jira/browse/PIG-2673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13270719#comment-13270719
] 

Ashutosh Chauhan commented on PIG-2673:
---------------------------------------

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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