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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-2) Reused Keys and Values fail with a Combiner
Date Fri, 03 Feb 2006 20:55:03 GMT
Reused Keys and Values fail with a Combiner
-------------------------------------------

         Key: HADOOP-2
         URL: http://issues.apache.org/jira/browse/HADOOP-2
     Project: Hadoop
        Type: Bug
  Components: mapred  
    Reporter: Owen O'Malley


If the map function reuses the key or value by destructively modifying it after the output.collect(key,value)
call and your application uses a combiner, the data is corrupted by having lots of instances
with the last key or value.

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