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https://issues.apache.org/jira/browse/PIG-1172?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Dai updated PIG-1172:
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Attachment: PIG-1172-2.patch
hadoop20.jar should not be in patch. I reattched the patch. Thanks.
> PushDownForeachFlatten shall not push ForEach below Join if the flattened
> fields is used in Join
> ------------------------------------------------------------------------------------------------
>
> Key: PIG-1172
> URL: https://issues.apache.org/jira/browse/PIG-1172
> Project: Pig
> Issue Type: Bug
> Components: impl
> Affects Versions: 0.6.0
> Reporter: Daniel Dai
> Assignee: Daniel Dai
> Fix For: 0.6.0
>
> Attachments: PIG-1172-1.patch, PIG-1172-2.patch
>
>
> Currently the following script will push B below D. But we will use fattened
> column in the join, we cannot push that.
> A = load '1.txt' as (bg:bag{t:tuple(a0,a1)});
> B = FOREACH A generate flatten($0);
> C = load '3.txt' AS (c0, c1);
> D = JOIN B by a1, C by c1;
> E = limit D 10;
> explain E;
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