[GitHub] [ozone] siddhantsangwan opened a new pull request #1982: Hdds 4872. Upgrade UsageInfoSubcommand with options to show most and least used datanodes.

[GitBox]

siddhantsangwan opened a new pull request #1982:
URL: https://github.com/apache/ozone/pull/1982


   ## What changes were proposed in this pull request?
   
   Introduce `--most-used` and `--least-used` options in `UsageInfoSubcommand` 
to get the usage info of most used and least used datanodes, respectively. 
`--count` option can be used to specify number of nodes along with 
`--most-used` or `--least-used`.
   
   All options except `--count` are now exclusive.
   
   ## What is the link to the Apache JIRA
   
   https://issues.apache.org/jira/browse/HDDS-4872
   
   ## How was this patch tested?
   
   Tested using docker-compose. Screenshots have been attached below.
   
   <img width="798" alt="test1" 
src="https://user-images.githubusercontent.com/34305492/109654699-827e0e00-7b88-11eb-91f5-eef3fe050d4b.png";>
   <img width="945" alt="test2" 
src="https://user-images.githubusercontent.com/34305492/109654728-8ad64900-7b88-11eb-98b5-2c2ac3544a3a.png";>
   <img width="945" alt="test3" 
src="https://user-images.githubusercontent.com/34305492/109654772-96c20b00-7b88-11eb-9c75-68f8b45d2c0d.png";>
   <img width="945" alt="image" 
src="https://user-images.githubusercontent.com/34305492/109654829-ab9e9e80-7b88-11eb-8ac8-dbab46b94a7a.png";>
   


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