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https://issues.apache.org/jira/browse/PIG-980?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Dai closed PIG-980.
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> Optimizing nested order bys
> ---------------------------
>
>                 Key: PIG-980
>                 URL: https://issues.apache.org/jira/browse/PIG-980
>             Project: Pig
>          Issue Type: Improvement
>            Reporter: Alan Gates
>            Assignee: Ying He
>             Fix For: 0.7.0
>
>
> Pig needs to take advantage of secondary sort in Hadoop to optimize nested 
> order bys.

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