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From "Thejas M Nair (JIRA)" <j...@apache.org>
Subject [jira] [Created] (PIG-1963) in nested foreach, accumutive udf taking input from order-by does not get results in order
Date Mon, 04 Apr 2011 22:19:05 GMT
in nested foreach, accumutive udf taking input from order-by does not get results in order
------------------------------------------------------------------------------------------

                 Key: PIG-1963
                 URL: https://issues.apache.org/jira/browse/PIG-1963
             Project: Pig
          Issue Type: Bug
    Affects Versions: 0.8.0, 0.9.0
            Reporter: Thejas M Nair


This happens only when secondary sort is not being used for the order-by. 
For example -
{code}
a1 = load 'fruits.txt' as (f1:int,f2);
a2 = load 'fruits.txt' as (f1:int,f2);

b = cogroup a1 by f1, a2 by f1;

d = foreach b {
   sort1 = order a1 by f2;
   sort2 = order a2 by f2; -- secondary sort not getting used here, MYCONCATBAG gets results
in wrong order
   generate group, MYCONCATBAG(sort1.f1), MYCONCATBAG(sort2.f2);
}

-- explain d;
dump d;
{code}



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