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https://issues.apache.org/jira/browse/PIG-1687?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Olga Natkovich updated PIG-1687:
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Assignee: Xuefu Zhang
> validate type as soon as each line of script is entered in grunt shell
> ----------------------------------------------------------------------
>
> Key: PIG-1687
> URL: https://issues.apache.org/jira/browse/PIG-1687
> Project: Pig
> Issue Type: Improvement
> Affects Versions: 0.8.0
> Reporter: Thejas M Nair
> Assignee: Xuefu Zhang
> Fix For: 0.9.0
>
>
> In interactive mode (grunt shell), the type validation should be done as soon
> as a line of script is added .
> For example -
> {code}
> grunt> l = load 'x' as (a : chararray, b : int);
> -- no error when following statement is typed
> grunt> f = foreach l generate a + b;
> -- errors only when explain/describe/dump/store is called
> grunt> describe f;
> 2010-10-21 15:46:09,137 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR
> 1039: In alias f, incompatible types in Add Operator left hand side:chararray
> right hand side:int
> Details at logfile: /Users/tejas/pig_comb/trunk/pig_1287700533547.log
> {code}
> Another example-
> {code}
> grunt> l = load 'x' as (a : chararray, b : int);
> grunt> f = foreach l generate CONCAT(a,b);
> grunt> describe f;
> 2010-10-21 15:46:51,477 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR
> 1045: Could not infer the matching function for org.apache.pig.builtin.CONCAT
> as multiple or none of them fit. Please use an explicit cast.
> {code}
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