1

INVALID_ARGUMENT_NUMBER

• Incorrect number of arguments provided for the given task-controller command
• Failure to initialize the job localizer

2

INVALID_USER_NAME

The user passed to the task-controller does not exist.

3

INVALID_COMMAND_PROVIDED

The task-controller does not recognize the command it was asked to execute.

4

SUPER_USER_NOT_ALLOWED_TO_RUN_TASKS

The user passed to the task-controller was the super user.

5

INVALID_TT_ROOT

The passed TaskTracker root does not match the configured TaskTracker root (mapred.local.dir), or does not exist.

6

SETUID_OPER_FAILED

Either could not read the local groups database, or could not set UID or GID

7

UNABLE_TO_EXECUTE_TASK_SCRIPT

The task-controller could not execute the task launcher script.

8

UNABLE_TO_KILL_TASK

The task-controller could not kill the task it was passed.

9

INVALID_TASK_PID

The PID passed to the task-controller was negative or 0.

10

ERROR_RESOLVING_FILE_PATH

The task-controller couldn't resolve the path of the task launcher script file.

11

RELATIVE_PATH_COMPONENTS_IN_FILE_PATH

The path to the task launcher script file contains relative components (for example, "..").

12

UNABLE_TO_STAT_FILE

The task-controller didn't have permission to stat a file it needed to check the ownership of.

13

FILE_NOT_OWNED_BY_TASKTRACKER

A file which the task-controller must change the ownership of has the wrong the ownership.

14

PREPARE_ATTEMPT_DIRECTORIES_FAILED

The mapred.local.dir is not configured, could not be read by the task-controller, or could not have its ownership secured.

15

INITIALIZE_JOB_FAILED

The task-controller couldn't get, stat, or secure the job directory or job working working directory.

16

PREPARE_TASK_LOGS_FAILED

The task-controller could not find or could not change the ownership of the task log directory to the passed user.

17

INVALID_TT_LOG_DIR

The hadoop.log.dir is not configured.

18

OUT_OF_MEMORY

The task-controller couldn't determine the job directory path or the task launcher script path.

19

INITIALIZE_DISTCACHEFILE_FAILED

Couldn't get a unique value for, stat, or the local distributed cache directory.

20

INITIALIZE_USER_FAILED

Couldn't get, stat, or secure the per-user task tracker directory.

21

UNABLE_TO_BUILD_PATH

The task-controller couldn't concatenate two paths, most likely because it ran out of memory.

22

INVALID_TASKCONTROLLER_PERMISSIONS

The task-controller binary does not have the correct permissions set. See Appendix B - Information about Other Hadoop Security Programs.

23

PREPARE_JOB_LOGS_FAILED

The task-controller could not find or could not change the ownership of the job log directory to the passed user.

24

INVALID_CONFIG_FILE

The taskcontroller.cfg file is missing, malformed, or has incorrect permissions.

255

Unknown Error

There are several causes for this error. Some common causes are:

• There are user accounts on your cluster that have a user ID less than the value specified for the min.user.id property in the taskcontroller.cfg file. The default value is 1000 which is appropriate on Ubuntu systems, but may not be valid for your operating system. For information about setting min.user.id in the taskcontroller.cfg file, see this step.
• Jobs won't run and the TaskTracker is unable to create a Hadoop logs directory. For more information, see (MRv1 Only) Problem 8: Jobs won't run and TaskTracker is unable to create a Hadoop logs directory. .
• This error is often caused by previous errors; look earlier in the log file for possible causes.