查看当前hadoop正在执行的jobs: hadoop job -list

JobId   State   StartTime       UserName        Priority        SchedulingInfo
job_201212111628_11166  1       1375083632268   dbs     NORMAL  NA
job_201212111628_11219  1       1375280297644   dbs     NORMAL  NA

杀掉job： 

hadoop job -kill job_201212111628_11166
Killed job job_201212111628_11166