[jira] Resolved: (PIG-51) Combiner gives wrong result in the presence of flattening

["Alan Gates (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PIG-51?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alan Gates resolved PIG-51.
---------------------------

       Resolution: Fixed
    Fix Version/s: 0.1.0

Fix for this was checked in some time ago (12/13/07).

> Combiner gives wrong result in the presence of flattening
> ---------------------------------------------------------
>
>                 Key: PIG-51
>                 URL: https://issues.apache.org/jira/browse/PIG-51
>             Project: Pig
>          Issue Type: Bug
>            Reporter: Utkarsh Srivastava
>            Priority: Critical
>             Fix For: 0.1.0
>
>         Attachments: combiner-flatten.patch
>
>
> If you do something like
> a = load ... as (f1,f2,f3);
> b = group a by (f1,f2);
> c = foreach b generate flatten(group), SUM(a.f3);
> The reduce side refers to field number expecting data will not have been flattened yet. But if the combiner kicks in, it already flattens the group, leading to column references being wrong.
>  

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.