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Date: Mon, 30 May 2011 17:14:47 +0000 (UTC)
From: "Dan Harvey (JIRA)" <jira@apache.org>
To: mapreduce-dev@hadoop.apache.org
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 <45721551.53788.1306775687490.JavaMail.tomcat@hel.zones.apache.org>
Subject: [jira] [Created] (MAPREDUCE-2546) MRunit ReduceDriver does not
 fully replicate the reducers behaviour with reusing pointers over the
 iterator
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MRunit ReduceDriver does not fully replicate the reducers behaviour with reusing pointers over the iterator
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                 Key: MAPREDUCE-2546
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2546
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: contrib/mrunit
    Affects Versions: 0.21.0, 0.20.2, 0.20.1
            Reporter: Dan Harvey
            Priority: Minor


The MRunit ReduceDriver does not replicate the behaviour of re-using the pointer to the returned values as they are iterated over. This is a problem for testing as it does not fail when you are incorrectly storing this pointer for a value if you want to use it later on in the iteration over the values.

The behaviour should be modified so the iterator will return the same pointer every time.

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