[Hadoop-common-user] kill-task syntax?

hadoop job -kill-task and -fail-task don't work for me. I get this kind of error:

Exception in thread "main" java.lang.IllegalArgumentException: TaskAttemptId string : task_201103101623_12995_r_000000 is not properly formed
at org.apache.hadoop.mapreduce.TaskAttemptID.forName(TaskAttemptID.java:170)
at org.apache.hadoop.mapred.TaskAttemptID.forName(TaskAttemptID.java:108)
at org.apache.hadoop.mapred.JobClient.run(JobClient.java:1787)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
at org.apache.hadoop.mapred.JobClient.main(JobClient.java:1956)

How is that not a properly formed task id? I copied it straight off the job tracker? Killing a job generally works for me........although much to my dismay the job often doesn't actually die, which is why I'm not attempting to kill the underlying tasks directly.

Thanks.

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Keith Wiley [email protected] keithwiley.com music.keithwiley.com

"You can scratch an itch, but you can't itch a scratch. Furthermore, an itch can
itch but a scratch can't scratch. Finally, a scratch can itch, but an itch can't
scratch. All together this implies: He scratched the itch from the scratch that
itched but would never itch the scratch from the itch that scratched."
-- Keith Wiley
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