yaooqinn commented on issue #1796:
URL: 
https://github.com/apache/incubator-kyuubi/issues/1796#issuecomment-1016250340


   > Remove the spark.yarn.submit.waitAppCompletion=false configuration and 
call process.destroyForcibly() in org.apache.kyuubi.engine.ProcBuilder#close to 
end the spark submit process. (The process cannot be destroyed in client mode)
   
   We rely on client/driver log heavily, so I agree we shouldn't allow 
`spark.yarn.submit.waitAppCompletion=false` for better error detecting.
   
   I prefer 1 to 2 in general. Are we able to check the process is free to call 
`process.destroyForcibly()`?
   
   


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