Support scalar relationship in nested foreach
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Key: PIG-2123
URL: https://issues.apache.org/jira/browse/PIG-2123
Project: Pig
Issue Type: Improvement
Reporter: Gianmarco De Francisci Morales
Priority: Minor
It would be nice to have the possibility to compute and use scalar relationship
inside a nested foreach block.
As an example, the following code is not currently supported by Pig.
{code}
a = LOAD 'data.txt' AS (id:chararray, num:int);
b = GROUP a BY id;
c = FOREACH b { n = COUNT(a); d = FILTER a BY num == n; GENERATE d; };
{code}
This would be useful with LIMIT and SAMPLE as well.
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