dailidong commented on issue #4847:
URL: 
https://github.com/apache/incubator-dolphinscheduler/issues/4847#issuecomment-784257761


   > hadoop job -list
   you'd better not to use this command.
   
   this command will list all the running yarn tasks to the task instance log, 
these yarn tasks will generate many application ids, DolphinScheduler will 
monitor all these yarn task until to finish, this operation will cost too  much 
time


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