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https://issues.apache.org/jira/browse/PIG-2070?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13034135#comment-13034135
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Richard Ding commented on PIG-2070:
-----------------------------------
+1
> "Unknown" appears in error message for an error case
> ----------------------------------------------------
>
> Key: PIG-2070
> URL: https://issues.apache.org/jira/browse/PIG-2070
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.9.0
> Reporter: Xuefu Zhang
> Assignee: Thejas M Nair
> Fix For: 0.9.0
>
> Attachments: PIG-2070.1.patch
>
>
> For the following query:
> a = load '1.txt' as (a0:int, a1:int);
> b = load '2.txt' as (a0:int, a1:chararray);
> c = cogroup a by (a0,a1), b by (a0,a1);
> Pig gives the following message, which includes "unknown" word.
> 2011-05-13 11:01:18,682 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR
> 1051:
> <line 3, column 4> Cannot cast to Unknown
> The error message should be more meaningful.
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