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https://issues.apache.org/jira/browse/MAPREDUCE-842?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinod K V updated MAPREDUCE-842:
--------------------------------
Release Note:
Modified TaskTracker and related classes so that per-job local data on the
TaskTracker node has right access-control. Important changes:
- All files/directories of the job on the TaskTracker are now user-owned by
the job-owner and group-owner by a special TaskTracker's group.
- The permissions of the file/directories are set to the most restrictive
permissions possible.
- Files/dirs shareable by all tasks of the job on this TT are set proper
access control as soon as possible, i.e immediately after job-localization and
those that are private to a single task are set access control after the
corresponding task's localization.
- Also fixes MAPREDUCE-131 which is related to a bug because of which tasks
hang when the taskcontroller.cfg has multiple entries for mapred.local.dir
- A new configuration entry hadoop.log.dir corresponding to the hadoop.log.dir
in TT's configuration is now needed in task-controller.cfg so as to support
restricted access control for userlogs of the tasks on the TaskTracker.
was:
Modified TaskTracker and related classes so that per-job local data on the
TaskTracker node has right access-control. Important changes:
- All files/directories of the job on the TaskTracker are now user-owned by
the job-owner and group-owner by a special TaskTracker's group.
- The permissions of the file/directories are set to the most restrictive
permissions possible.
- Files/dirs shareable by all tasks of the job on this TT are set proper
access control as soon as possible, i.e immediately after job-localization and
those that are private to a single task are set access control after the
corresponding task's localization.
- A new configuration entry hadoop.log.dir corresponding to the hadoop.log.dir
in TT's configuration is now needed in task-controller.cfg
> Per-job local data on the TaskTracker node should have right access-control
> ---------------------------------------------------------------------------
>
> Key: MAPREDUCE-842
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-842
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Components: tasktracker
> Reporter: Arun C Murthy
> Assignee: Vinod K V
> Fix For: 0.21.0
>
> Attachments: HADOOP-4491-20090623-common.1.txt,
> HADOOP-4491-20090623-mapred.1.txt, HADOOP-4491-20090703-common.1.txt,
> HADOOP-4491-20090703-common.txt, HADOOP-4491-20090703.1.txt,
> HADOOP-4491-20090703.txt, HADOOP-4491-20090707-common.txt,
> HADOOP-4491-20090707.txt, HADOOP-4491-20090716-mapred.txt,
> HADOOP-4491-20090803.1.txt, HADOOP-4491-20090803.txt,
> HADOOP-4491-20090806.txt, HADOOP-4491-20090807.2.txt,
> HADOOP-4491-20090810.1.txt, HADOOP-4491-20090810.3.txt,
> HADOOP-4491-20090811.txt, HADOOP-4491-20090812.txt
>
>
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