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From "Amar Kamat (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-4112) Got ArrayOutOfBound exception while analyzing the job history
Date Mon, 08 Sep 2008 05:20:44 GMT
Got ArrayOutOfBound exception while analyzing the job history
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                 Key: HADOOP-4112
                 URL: https://issues.apache.org/jira/browse/HADOOP-4112
             Project: Hadoop Core
          Issue Type: Bug
          Components: mapred
            Reporter: Amar Kamat


HADOOP-3150 introduced 2 new type of tasks called the cleanup tasks. These are logged to history
either as map tasks or reduce tasks. The number of maps/reducers is also logged to history.
Since the number of maps will be less than the total number of map tasks logged to history
(actual num maps + cleanup tasks), I think thats the reason for this exception. The important
question is to investigate the effect of HADOOP-3150 on job history and code related to it.

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