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Brock Noland commented on MRUNIT-65:
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This is a great jira.
> return better error message when mapper or reducer is null for MapDriver or ReduceDriver
> ----------------------------------------------------------------------------------------
>
> Key: MRUNIT-65
> URL: https://issues.apache.org/jira/browse/MRUNIT-65
> Project: MRUnit
> Issue Type: Improvement
> Reporter: Jim Donofrio
> Priority: Minor
>
> Currently if you use the default constructor for MapDriver or ReduceDriver you just get
a nullpointer exception instead of a more meaningful error stating that you did not specify
a mapper or reducer class
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