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From "Richard Ding (JIRA)" <j...@apache.org>
Subject [jira] Created: (PIG-1389) Implement Pig counter to track number of rows for each input files
Date Thu, 22 Apr 2010 17:41:49 GMT
Implement Pig counter to track number of rows for each input files 
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                 Key: PIG-1389
                 URL: https://issues.apache.org/jira/browse/PIG-1389
             Project: Pig
          Issue Type: Improvement
    Affects Versions: 0.7.0
            Reporter: Richard Ding
             Fix For: 0.8.0


A MR job generated by Pig not only can have multiple outputs (in the case of multiquery) but
also can have multiple inputs (in the case of join or cogroup). In both cases, the existing
Hadoop counters (e.g. MAP_INPUT_RECORDS, REDUCE_OUTPUT_RECORDS) can not be used to count the
number of records in the given input or output.  PIG-1299 addressed the case of multiple outputs.
 We need to add new counters for jobs with multiple inputs.

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