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Posted to mapreduce-issues@hadoop.apache.org by "Ravi Gummadi (JIRA)" <ji...@apache.org> on 2010/01/20 11:07:55 UTC

[jira] Updated: (MAPREDUCE-871) Job/Task local files have incorrect group ownership set by LinuxTaskController binary

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

Ravi Gummadi updated MAPREDUCE-871:
-----------------------------------

    Attachment: 871.20S.patch

Attaching patch for Y! 20 distribution. Not for commit here.

> 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: 871.20S.patch, 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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