[jira] [Created] (MRUNIT-198) Serialization is missing in MockMultipleOutputs

["Lars Grote (JIRA)" <ji...@apache.org>]

Lars Grote created MRUNIT-198:
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             Summary: Serialization is missing in MockMultipleOutputs
                 Key: MRUNIT-198
                 URL: https://issues.apache.org/jira/browse/MRUNIT-198
             Project: MRUnit
          Issue Type: Bug
    Affects Versions: 1.1.0
            Reporter: Lars Grote
             Fix For: 1.1.0


Hi, 
with issue MRUNIT-13 MockMultipleOutputs was introduced. Which is great! Unfortunately the inner class MockRecordWriter doesn't serialize the Object and therefore isn't storing a copy of the Object but the Object itself. I would suggest to use org.apache.hadoop.mrunit.internal.output.MockOutputCollector instead of the inner class. This Collector does store a copy of the Object and I see no point in having more or less the same Collector/Writer twice. 

Another thing that bugs me, is that MockMultipleOutputs requires you to use Comparable Objects in your MR Jobs, and I don't see for what reason this restriction is imposed on me.

I'll provide a patch for this soon and would be glad if someone can comment on it. 
Cheers, Lars 





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