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https://issues.apache.org/jira/browse/HADOOP-1001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12485626
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Owen O'Malley commented on HADOOP-1001:
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I'm sorry, I wasn't very clear. The error message should be included in a
thrown IOException as you were doing. That would be caught and log the stack
trace too, which should help the user find the source of the problem.
> the output of the map is not type checked against the specified types
> ---------------------------------------------------------------------
>
> Key: HADOOP-1001
> URL: https://issues.apache.org/jira/browse/HADOOP-1001
> Project: Hadoop
> Issue Type: Bug
> Components: mapred
> Affects Versions: 0.11.0
> Reporter: Owen O'Malley
> Assigned To: Tahir Hashmi
> Fix For: 0.13.0
>
> Attachments: 1001.patch, 1001.patch
>
>
> The output of the map is not checked against the types specified in the
> JobConf leading to hard to diagnose bugs.
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