job submission should inject group.name (on the JT side)
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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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