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https://issues.apache.org/jira/browse/MAPREDUCE-915?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinod K V updated MAPREDUCE-915:
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Status: Open (was: Patch Available)
- The newly added tests {{TestDebugScript}} and
{{TestDebugScriptWithLinuxTaskController}} are missing from the latest patch.
Please also do not forget to include the minor comments I've put up earlier
w.r.t the first of these.
- Please include a info log statement in
{{src/c++/task-controller/task-controller.c}}, in function
{{run_process_as_user()}} as to which of the two commands it is actually
running. Either in this function, or the callers.
bq. The one thing which I and Owen felt should be left as is is to have the
same file for writing the commands for launching tasks and debug scripts.
The taskjvm.sh file helps a lot during debugging of edge cases. If debug-script
overwrites it, we lose this small but useful help. Logging the contents of
taskjvm.sh to TT log file before the taskjvm.sh is actually written may help in
these situations. I'll ask Hemanth's opinion about this too.
> For secure environments, the Map/Reduce debug script must be run as the user.
> -----------------------------------------------------------------------------
>
> Key: MAPREDUCE-915
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-915
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: security, tasktracker
> Affects Versions: 0.21.0
> Reporter: Hemanth Yamijala
> Assignee: Devaraj Das
> Priority: Blocker
> Fix For: 0.21.0
>
> Attachments: 915-4.patch, 915.1.patch, 915.2.patch, 915.patch
>
>
> The Taskcontroller model allows admins to set up a cluster configuration that
> runs tasks as users. The debug script feature of Map/Reduce provided by the
> configuration options: mapred.map.task.debug.script and
> mapred.reduce.task.debug.script need to be run as the user as well in such
> environments, rather than as the tasktracker user.
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