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From "Vinod K V (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAPREDUCE-842) Per-job local data on the TaskTracker node should have right access-control
Date Tue, 22 Sep 2009 06:44:16 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-842?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

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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