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Date: Tue, 30 Dec 2008 00:08:44 -0800 (PST)
From: "Sreekanth Ramakrishnan (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Updated: (HADOOP-4930) Implement setuid executable for Linux
 to assist in launching tasks as job owners
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     [ https://issues.apache.org/jira/browse/HADOOP-4930?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sreekanth Ramakrishnan updated HADOOP-4930:
-------------------------------------------

    Attachment: HADOOP-4930-6.patch

Attaching patch incorporating Hemanth's offline comment.

* Made changes in build.xml to introduce a new target task-controller to build task-controller binary.
** target requires -Dhadoop.conf.dir or HADOOP_CONF_DIR set.
*** if HADOOP_CONF_DIR is set and hadoop.conf.dir is passed, then hadoop.conf.dir value is used.
*** if either one of them is defined then that value is used.
*** if none of t hem is defined then build fails.
** Default install directory for the binary is distribution directory/bin. This can be overriden by passing -Dtask-controller.install.dir=$HADOOP_HOME/bin


> Implement setuid executable for Linux to assist in launching tasks as job owners
> --------------------------------------------------------------------------------
>
>                 Key: HADOOP-4930
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4930
>             Project: Hadoop Core
>          Issue Type: Sub-task
>          Components: mapred
>            Reporter: Hemanth Yamijala
>            Assignee: Sreekanth Ramakrishnan
>         Attachments: HADOOP-4930-1.patch, HADOOP-4930-2.patch, HADOOP-4930-3.patch, HADOOP-4930-4.patch, HADOOP-4930-5.patch, HADOOP-4930-6.patch
>
>
> HADOOP-4490 tracks the design and implementation of launching tasks as job owners. As per discussion there, the proposal is to implement a setuid executable for Linux that would be launched by the tasktracker to run tasks as the job owners. In this task we will track the implementation of the setuid executable. HADOOP-4490 will be used to track changes in the tasktracker.

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