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https://issues.apache.org/jira/browse/MAPREDUCE-4397?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13492801#comment-13492801
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Yu Gao commented on MAPREDUCE-4397:
-----------------------------------

Posted test-patch result. Here is the test result of test-task-controller:
     [exec] Starting tests
     [exec]
     [exec] Testing get_user_directory()
     [exec]
     [exec] Testing get_job_directory()
     [exec]
     [exec] Testing get_attempt_directory()
     [exec]
     [exec] Testing get_task_launcher_file()
     [exec]
     [exec] Testing get_job_log_dir()
     [exec]
     [exec] Testing get_config_path
     [exec]
     [exec] Testing check_configuration_permissions
     [exec] File /tmp/test-task-controller must be owned by root, but is owned 
by 500
     [exec]
     [exec] Testing get_task_log_dir()
     [exec]
     [exec] Testing delete_task()
     [exec] Unreadable directory 
/tmp/test-task-controller/local-2/taskTracker/biadmin/jobcache/job_1/task_1/work/who/let,
 chmoding.
     [exec]
     [exec] Testing delete_job()
     [exec] Unreadable directory 
/tmp/test-task-controller/local-2/taskTracker/biadmin/jobcache/job_2/task_1/work/who/let,
 chmoding.
     [exec]
     [exec] Testing delete_user
     [exec]
     [exec] Testing test_check_user
     [exec] Requested user lp has id 4, which is below the minimum allowed 100
     [exec] Running as root is not allowed
     [exec] User mapred not found
     [exec]
     [exec] Testing test_create_log_directory
     [exec]
     [exec] Testing delete_log_directory
     [exec]
     [exec] Running test test_signal_task in child process
     [exec]
     [exec] Testing signal_task
     [exec] Child task launched as 26548
     [exec] Killing process 26548 with 3
     [exec]
     [exec] Running test test_signal_task_group in child process
     [exec]
     [exec] Testing group signal_task
     [exec] Child task launched as 26550
     [exec] Killing process group 26550 with 9
     [exec]
     [exec] Finished tests
     [exec] PASS: test-task-controller
     [exec] ==================
     [exec] All 1 tests passed
     [exec] ==================

                
> Introduce HADOOP_SECURITY_CONF_DIR for task-controller
> ------------------------------------------------------
>
>                 Key: MAPREDUCE-4397
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4397
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: task-controller
>            Reporter: Luke Lu
>            Assignee: Yu Gao
>         Attachments: mapreduce-4397-branch-1.patch, test-patch.result
>
>
> The linux task controller concurrently hard code the directory to look for 
> its config file at compile time (via the HADOOP_CONF_DIR macro). Adding a new 
> environment variable to look for task-controller's conf dir (with strict 
> permission checks) would make installation much more flexible.

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