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From "Richard Ding (JIRA)" <j...@apache.org>
Subject [jira] Updated: (PIG-1642) Order by doesn't use estimation to determine the parallelism
Date Fri, 24 Sep 2010 18:18:34 GMT

     [ https://issues.apache.org/jira/browse/PIG-1642?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Richard Ding updated PIG-1642:
------------------------------

    Attachment: PIG-1642.patch

The patch passed test-core.

The results of test-patch:

{code}
    [exec] +1 overall.  
     [exec] 
     [exec]     +1 @author.  The patch does not contain any @author tags.
     [exec] 
     [exec]     +1 tests included.  The patch appears to include 8 new or modified tests.
     [exec] 
     [exec]     +1 javadoc.  The javadoc tool did not generate any warning messages.
     [exec] 
     [exec]     +1 javac.  The applied patch does not increase the total number of javac compiler
warnings.
     [exec] 
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs warnings.
     [exec] 
     [exec]     +1 release audit.  The applied patch does not increase the total number of
release audit warnings.
{code}

> Order by doesn't use estimation to determine the parallelism
> ------------------------------------------------------------
>
>                 Key: PIG-1642
>                 URL: https://issues.apache.org/jira/browse/PIG-1642
>             Project: Pig
>          Issue Type: Bug
>    Affects Versions: 0.8.0
>            Reporter: Richard Ding
>            Assignee: Richard Ding
>             Fix For: 0.8.0
>
>         Attachments: PIG-1642.patch
>
>
> With PIG-1249, a simple heuristic is used to determine the number of reducers if it isn't
specified (via PARALLEL or default_parallel). For order by statement, however, it still defaults
to 1.

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