how to kill hadoop jobs

Question

I want to kill all my hadoop jobs automatically when my code encounters an unhandled exception  I am wondering what is the best practice to do it   Thanks

User · Answer

Depending on the version  do   version  lt 2 3 0  Kill a hadoop job   hadoop job -kill  jobId   You can get a list of all jobId s doing   hadoop job -list     version   2 3 0  Kill a hadoop job   yarn application -kill  ApplicationId   You can get a list of all  ApplicationId s doing   yarn application -list

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Run list to show all the jobs  then use the jobID applicationID in the appropriate command   Kill mapred jobs   mapred job -list mapred job -kill  lt jobId gt    Kill yarn jobs   yarn application -list yarn application -kill  lt ApplicationId gt

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Use of folloing command is depreciated  hadoop job -list hadoop job -kill  jobId   consider using   mapred job -list mapred job -kill  jobId

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Simply forcefully kill the process ID  the hadoop job will also be killed automatically   Use this command     kill -9  lt process id gt        eg  process ID no  4040 namenode   username hostname    kill -9 4040

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An unhandled exception will  assuming it s repeatable like bad data as opposed to read errors from a particular data node  eventually fail the job anyway    You can configure the maximum number of times a particular map or reduce task can fail before the entire job fails through the following properties    mapred map max attempts - The maximum number of attempts per map task  In other words  framework will try to execute a map task these many number of times before giving up on it  mapred reduce max attempts - Same as above  but for reduce tasks   If you want to fail the job out at the first failure  set this value from its default of 4 to 1

User · Answer

Use below command to kill all jobs running on yarn  For accepted jobs use below command  for x in   yarn application -list -appStates ACCEPTED   awk  NR  gt  2   print  1      do yarn application -kill  x  done For running  jobs use the below command  for x in   yarn application -list -appStates RUNNING   awk  NR  gt  2   print  1      do yarn application -kill  x  done

[hadoop] how to kill hadoop jobs

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