Splitting output data on key field
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                 Key: PIG-958
                 URL: https://issues.apache.org/jira/browse/PIG-958
             Project: Pig
          Issue Type: Bug
    Affects Versions: 0.4.0
            Reporter: Ankur


Pig users often face the need to split the output records into a bunch of files 
and directories depending on the type of record. Pig's SPLIT operator is useful 
when record types are few and known in advance. In cases where type is not 
directly known but is derived dynamically from values of a key field in the 
output tuple, a custom store function is a better solution.

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