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What is the use of the Top command in Hadoop ?

What is the use of the Top command in Hadoop ?

 
2 REPLIES 2

Re: What is the use of the Top command in Hadoop ?

Could you elaborate on that question? Are you asking the general usefulness that top would provide, or are you asking about "yarn top"? For now I'm assuming you meant "yarn top", using yarn top you can the current running applications and their usage statistics such as memory and cores used. It's a way to view whats going on more real time than the resource manager UI for example.

ex.

YARN top - 16:00:50, up 0d, 7:14, 1 active users, queue(s): root
NodeManager(s): 3 total, 3 active, 0 unhealthy, 0 decommissioned, 0 lost, 0 rebooted
Queue(s) Applications: 1 running, 3 submitted, 0 pending, 2 completed, 0 killed, 0 failed
Queue(s) Mem(GB): 0 available, 45 allocated, 155 pending, 0 reserved
Queue(s) VCores: 0 available, 90 allocated, 311 pending, 0 reserved
Queue(s) Containers: 90 allocated, 311 pending, 0 reserved


                  APPLICATIONID USER             TYPE      QUEUE PRIOR   #CONT  #RCONT  VCORES RVCORES     MEM    RMEM  VCORESECS    MEMSECS %PROGR       TIME NAME
 application_1531989988564_0003 hdfs        mapreduce    default     0      90       0      90       0     45G      0G        357        189   5.00   00:00:00 QuasiMonteCarlo

Re: What is the use of the Top command in Hadoop ?

I am asked about the Yarn Top .With the help of that command may I know the size of the cluster? and could please explain the attributes?