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From "Olga Natkovich (JIRA)" <j...@apache.org>
Subject [jira] Created: (PIG-480) Use identity mapper in a chain of M-R jobs
Date Thu, 09 Oct 2008 19:00:47 GMT
Use identity mapper in a chain of M-R jobs
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                 Key: PIG-480
                 URL: https://issues.apache.org/jira/browse/PIG-480
             Project: Pig
          Issue Type: Improvement
    Affects Versions: types_branch
            Reporter: Olga Natkovich
             Fix For: types_branch


For jobs with two or more MR jobs, use identity mapper wherever possible in second and subsequent
MR jobs. Identity mapper is about 50% than pig empty map job because it doesn't parse the
data. 


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