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From "Vinod K V (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAPREDUCE-871) Job/Task local files have incorrect group ownership set by LinuxTaskController binary
Date Tue, 22 Sep 2009 05:54:16 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-871?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vinod K V updated MAPREDUCE-871:
--------------------------------

    Release Note: Fixed LinuxTaskController binary so that permissions of local files on TT
are set correctly: user owned by the job-owner and group-owned by the group owner of the binary
and _not_ the primary group of the TaskTracker.

> Job/Task local files have incorrect group ownership set by LinuxTaskController binary
> -------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-871
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-871
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: tasktracker
>            Reporter: Vinod K V
>            Assignee: Vinod K V
>             Fix For: 0.21.0
>
>         Attachments: MAPREDUCE-871-20090820.1.txt
>
>
> HADOOP-4491 fixed the secure permissions of local files on a TT. While testing HADOOP-4491
on a cluster, [~karams] found out a bug. All the files/dirs have should be owned by the group
corresponding to the group owner of the task-controller binary (via using getegid()) which
in turn is a special group to which *only* TT user belongs. HADOOP-4491 incorrectly set it
to primary group of the TT via getgid(), and not the special group.

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