Resource Manager to assume identity of user to execute task
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Key: HADOOP-4451
URL: https://issues.apache.org/jira/browse/HADOOP-4451
Project: Hadoop Core
Issue Type: Improvement
Components: mapred
Reporter: Marco Nicosia
Fix For: 0.20.0
In the coming resource manager, the current model is that all tasks will run as
the same generic user (task.java is called directly by the TaskTracker).
Instead of calling "java task.java [arguments]" allow for calling a program
which will assume the UID (euid, gid, etc) of the calling user and call
task.java on behalf of the TaskTracker.
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