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https://issues.apache.org/jira/browse/PIG-946?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thejas M Nair updated PIG-946:
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Attachment: PIG-946.1.patch
Test passes test-patch and unit tests.
[exec] +1 overall.
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[exec] +1 @author. The patch does not contain any @author tags.
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[exec] +1 tests included. The patch appears to include 3 new or
modified tests.
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[exec] +1 javadoc. The javadoc tool did not generate any warning
messages.
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[exec] +1 javac. The applied patch does not increase the total number
of javac compiler warnings.
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[exec] +1 findbugs. The patch does not introduce any new Findbugs
warnings.
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[exec] +1 release audit. The applied patch does not increase the
total number of release audit warnings.
> Combiner optimizer does not optimize when limit follow group, foreach
> ---------------------------------------------------------------------
>
> Key: PIG-946
> URL: https://issues.apache.org/jira/browse/PIG-946
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.3.0
> Reporter: Pradeep Kamath
> Assignee: Thejas M Nair
> Fix For: 0.9.0
>
> Attachments: PIG-946-codechange-draft.patch, PIG-946.1.patch
>
>
> The following script is combinable but is not optimized:
> a = load '/user/pig/tests/data/singlefile/studenttab10k';
> b = group a by $1;
> c = foreach b generate group, AVG(a.$2);
> d = limit c 10;
> dump d;
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