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From "Amir Youssefi (JIRA)" <j...@apache.org>
Subject [jira] Created: (PIG-750) Use combiner when a mix of algebraic and non-algebraic functions are used
Date Fri, 03 Apr 2009 00:01:13 GMT
Use combiner when a mix of algebraic and non-algebraic functions are used
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                 Key: PIG-750
                 URL: https://issues.apache.org/jira/browse/PIG-750
             Project: Pig
          Issue Type: Improvement
            Reporter: Amir Youssefi
            Priority: Minor


Currently Pig uses combiner when all a,b, c,... are algebraic (e.g. SUM, AVG etc.) in foreach:

foreach X generate a,b,c,... 

 It's a performance improvement if it uses combiner when a mix of algebraic and non-algebraic
functions are used as well.

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