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Date: Wed, 18 Apr 2012 22:30:41 +0000 (UTC)
From: "Dmitriy V. Ryaboy (Updated) (JIRA)" <jira@apache.org>
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Subject: [jira] [Updated] (PIG-2652) Skew join and order by don't trigger
 reducer estimation
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     [ https://issues.apache.org/jira/browse/PIG-2652?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dmitriy V. Ryaboy updated PIG-2652:
-----------------------------------

    Status: Patch Available  (was: Reopened)
    
> Skew join and order by don't trigger reducer estimation
> -------------------------------------------------------
>
>                 Key: PIG-2652
>                 URL: https://issues.apache.org/jira/browse/PIG-2652
>             Project: Pig
>          Issue Type: Bug
>            Reporter: Bill Graham
>            Assignee: Bill Graham
>             Fix For: 0.10.0, 0.9.3, 0.11
>
>         Attachments: PIG-2652_1.patch, PIG-2652_2.patch, PIG-2652_3.patch, PIG-2652_3_10.patch, PIG-2652_4.patch, PIG-2652_5.patch
>
>
> If neither PARALLEL, default parallel or {{mapred.reduce.tasks}} are set, the number of reducers is not estimated based on input size for skew joins or order by. Instead, these jobs get only 1 reducer.

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