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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7634) Cluster setup docs specify wrong owner for task-controller.cfg
Date Sat, 17 Sep 2011 01:03:08 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7634?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13106977#comment-13106977
] 

Aaron T. Myers commented on HADOOP-7634:
----------------------------------------

+1.

Note that the file can actually be owned by anyone, it just can't  be writable by anyone but
root. The error message displayed is correct:

{noformat}
11/09/16 17:59:06 INFO mapred.TaskController: Invalid permissions or ownership on conf file
/etc/hadoop/conf/taskcontroller.cfg
11/09/16 17:59:06 INFO mapred.TaskController: Must be owned by root and not writable by group
or other
{noformat}

{noformat}
$ ls -l taskcontroller.cfg 
-rw-r--r-- 1 root atm 185 2011-09-16 17:53 taskcontroller.cfg
{noformat}

> Cluster setup docs specify wrong owner for task-controller.cfg 
> ---------------------------------------------------------------
>
>                 Key: HADOOP-7634
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7634
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: documentation, security
>    Affects Versions: 0.20.204.0
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>            Priority: Minor
>             Fix For: 0.20.205.0
>
>         Attachments: hadoop-7634.patch
>
>
> The cluster setup docs indicate task-controller.cfg must be owned by the user running
TaskTracker but the code checks for root. We should update the docs to reflect the real requirement.

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