Sriranjan Manjunath updated PIG-964:

    Attachment: skewedjoinnull.patch

Cleared end-end tests and added a new unit test to check for nulls in the 

> Handling null  in skewed join
> -----------------------------
>                 Key: PIG-964
>                 URL: https://issues.apache.org/jira/browse/PIG-964
>             Project: Pig
>          Issue Type: Bug
>            Reporter: Sriranjan Manjunath
>            Assignee: Sriranjan Manjunath
>         Attachments: skewedjoinnull.patch
> For null tuples, the tuple size is calculated incorrectly and thus  skewed 
> join ends up expecting a large number of reducers. Further, skewed join 
> should not bail out after the second job if the number of reducers specified 
> by the user is low. It should print a warning message and continue execution.

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