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From "Alejandro Abdelnur (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-2457) job submission should inject group.name (on the JT side)
Date Thu, 28 Apr 2011 05:15:03 GMT
job submission should inject group.name (on the JT side)
--------------------------------------------------------

                 Key: MAPREDUCE-2457
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2457
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: jobtracker
    Affects Versions: 0.21.0, 0.22.0
            Reporter: Alejandro Abdelnur
            Assignee: Alejandro Abdelnur
            Priority: Critical
             Fix For: 0.22.0


Until Hadoop 0.20, the JobClient was injecting the property 'group.name' on the JobConf submitted
to the JobTracker.

Since Hadoop 0.21, due to security related changes, this is not done anymore.

This breaks backwards compatibility for jobs/components that expect the 'group.name' to be
automatically set at submission time.

An example of a component being affected by this change is the FairScheduler where it is common
to use the group.name as pool name. Different from other properties, a special characteristic
of the group.name is that its value cannot be tampered by a user.

For security reasons this should not be done (as it was done before) in the JobClient side.
Instead, it should be done in the JobTracker when the JobConf is received.


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