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https://issues.apache.org/jira/browse/PIG-461?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alan Gates updated PIG-461:
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Attachment: PIG-461.patch
Fixed MRCompiler and JobControlCompiler so that limit that is added to the end
to get a single reduce will use the same sort partitioner as the order by above
it.
> Limit produces results in the wrong order
> -----------------------------------------
>
> Key: PIG-461
> URL: https://issues.apache.org/jira/browse/PIG-461
> Project: Pig
> Issue Type: Bug
> Affects Versions: types_branch
> Reporter: Olga Natkovich
> Assignee: Alan Gates
> Fix For: types_branch
>
> Attachments: PIG-461.patch
>
>
> Script:
> A = load 'studenttab200m' as (name, age, gpa);
> B = filter A by age > 20;
> C = group B by name;
> D = foreach C generate group, COUNT(B) PARALLEL 16;
> E = order D by $0 PARALLEL 16;
> F = limit E 10;
> --explain F;
> dump F;
> Output:
> comes out not sorted on the name
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