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https://issues.apache.org/jira/browse/PIG-2652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13254187#comment-13254187
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Daniel Dai commented on PIG-2652:
---------------------------------

Get couple of unit test failures:
    [junit] Test org.apache.pig.test.TestCounters FAILED
    [junit] Test org.apache.pig.test.TestEvalPipeline2 FAILED
    [junit] Test org.apache.pig.test.TestFRJoin FAILED
    [junit] Test org.apache.pig.test.TestGrunt FAILED
    [junit] Test org.apache.pig.test.TestJobSubmission FAILED
    [junit] Test org.apache.pig.test.TestJoin FAILED
    [junit] Test org.apache.pig.test.TestLimitVariable FAILED
    [junit] Test org.apache.pig.test.TestMultiQueryLocal FAILED
    [junit] Test org.apache.pig.test.TestPigRunner FAILED
    [junit] Test org.apache.pig.test.TestPigSplit FAILED
    [junit] Test org.apache.pig.test.TestSampleOptimizer FAILED
                
> 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
>
>
> 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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