How do I kill running map tasks on Amazon EMR?
Generally, on a Hadoop cluster you can kill a particular task by issuing:
hadoop job -kill-task [attempt_id]This will kill the given map task and re-submits it on an differentnode with a new id.
To get the attemp_id navigate on the Jobtracker's web UI to the map taskin question, click on it and note it's id (e.g: attempt_201210111830_0012_m_000000_0)