Olga Natkovich reassigned PIG-545:

    Assignee: Amir Youssefi

> PERFORMANCE: Sampler for order bys does not produce a good distribution
> -----------------------------------------------------------------------
>                 Key: PIG-545
>                 URL: https://issues.apache.org/jira/browse/PIG-545
>             Project: Pig
>          Issue Type: Bug
>          Components: impl
>    Affects Versions: types_branch
>            Reporter: Alan Gates
>            Assignee: Amir Youssefi
>             Fix For: types_branch
> In running tests on actual data, I've noticed that the final reduce of an 
> order by has skewed partitions.  Some reduces finish in a few seconds while 
> some run for 20 minutes.  Getting a better distribution should lead to much 
> better performance for order by.

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