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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] Created: (MAPREDUCE-2158) Remove need for taskcontroller.cfg
Date Wed, 27 Oct 2010 00:12:19 GMT
Remove need for taskcontroller.cfg
----------------------------------

                 Key: MAPREDUCE-2158
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2158
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
          Components: task-controller
    Affects Versions: 0.22.0
            Reporter: Aaron T. Myers
            Assignee: Aaron T. Myers


The taskcontroller.cfg configuration file seems unnecessary. It's parsed by the task-controller
binary, and the path to it is baked into that binary at compile-time. It contains only 3 values,
none of which are secret, all of which are also specified in either core-site.xml or mapred-site.xml.
It seems like getting rid of taskcontroller.cfg will simplify configuration, and have no impact
on the security of the system

I suggest we either:

# Pass these values as arguments to task-controller when we execute it.
# Use xerces to enable the task-controller to parse *-site.xml.

Of these two options, I think option 1 seems the cleanest/easiest. Either would be backward-compatible
with existing configurations.

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