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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1851) Map output compression codec cannot be set independently of job output compression codec
Date Mon, 01 Oct 2007 19:24:50 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1851?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12531604
] 

Doug Cutting commented on HADOOP-1851:
--------------------------------------

Renaming mapred.compress.map.output is not back-compatible.  Perhaps we should continue to
use this if it is set for back-compatibility?  Or else don't rename.

It also appears that all of the previous public constructors for MapFile are no longer present.
 If there are public constructors that are no longer used, these should be deprecated, not
simply removed.  Later we can remove the deprecated methods.


> 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
>             Fix For: 0.15.0
>
>         Attachments: HADOOP-1851_1_20070929.patch, HADOOP-1851_2_20070929.patch
>
>
> 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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