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From "Araceli Henley (JIRA)" <j...@apache.org>
Subject [jira] Created: (PIG-667) Error in projection implementation or in typechecking when casting a member of Bag
Date Wed, 11 Feb 2009 22:37:59 GMT
Error in projection implementation or in typechecking  when casting a member of Bag
-----------------------------------------------------------------------------------

                 Key: PIG-667
                 URL: https://issues.apache.org/jira/browse/PIG-667
             Project: Pig
          Issue Type: Bug
         Environment: i686 i386 GNU/Linux
            Reporter: Araceli Henley


As one of its members, a bag contains "age" of type "int". When this value is used as an argument
to DIFF and cast as an int for the comparison, the following error is thrown:

9/02/11 14:20:46 INFO mapReduceLayer.MapReduceLauncher: 50% complete
09/02/11 14:21:31 ERROR mapReduceLayer.MapReduceLauncher: Map reduce job failed
09/02/11 14:21:31 ERROR mapReduceLayer.MapReduceLauncher: Number of failed jobs: 1
09/02/11 14:21:31 ERROR mapReduceLayer.MapReduceLauncher: Job failed!
error message for task: map
error message for task: reduce
09/02/11 14:21:31 ERROR grunt.Grunt: ERROR 1072: Out of bounds access: Request for field number
1 exceeds tuple size of 1



Steps to reproduce 

 # valid use of DIFF with valid cast for bag field
TEST ErrorHandling.AggregateFunc_601

 A =LOAD '/user/pig/tests/data/types/DataAll' USING PigStorage() AS ( Fint:int, Flong:long,
Fdouble:double, Ffloat:float, Fchar:chararray, Fchararray:chararray, Fbytearray:bytearray,
Fmap:map[], Fbag:BAG{ t:tuple( name, age, avg ) }, Ftuple:( name:chararray, age:int, avg:float)
);
B =GROUP A ALL; 
X =FOREACH B GENERATE DIFF ( ( BAG{tuple(int)} ) A.Fbag.age, A.Fint );
 STORE X INTO '/user/pig/tests/results/araceli.1234390832/AggregateFunc_601.out' USING PigStorage();

 # invalid use of DIFF with valid cast for bag field, DIFF contains one argument instead off
two
TEST ErrorHandling.AggregateFunc_60

 A =LOAD '/user/pig/tests/data/types/DataAll' USING PigStorage() AS ( Fint:int, Flong:long,
Fdouble:double, Ffloat:float, Fchar:chararray, Fchararray:chararray, Fbytearray:bytearray,
Fmap:map[], Fbag:BAG{ t:tuple( name, age, avg ) }, Ftuple:( name:chararray, age:int, avg:float)
);
B =GROUP A ALL; 
X =FOREACH B GENERATE DIFF ( ( BAG{tuple(int)} ) A.Fbag.age ); 
STORE X INTO '/user/pig/tests/results/araceli.1234381533/AggregateFunc_60.out' USING PigStorage();



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