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https://issues.apache.org/jira/browse/HADOOP-1851?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12530774
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Doug Cutting commented on HADOOP-1851:
--------------------------------------

Yes, OutputFormat-specific parameters should not be accessed through JobConf, 
but rather through static methods on the appropriate OutputFormat class.  So, 
yes, we should deprecate existing OutputFormat-specific methods of JobConf.

> Map output compression codec cannot be set independently of job output 
> compression codec
> ----------------------------------------------------------------------------------------
>
>                 Key: HADOOP-1851
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1851
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.14.1
>            Reporter: Riccardo
>            Assignee: Arun C Murthy
>
> The property "mapred.output.compression.codec" is used when setting and 
> getting the map output compression codec in JobConf, thus making it 
> impossible to use a different codec for map outputs and overall job outputs.

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