[GitHub] [ozone] siddhantsangwan opened a new pull request #1919: HDDS-4816. Add DiskMetricsSubCommand to get Datanode usage information.

[GitBox]

siddhantsangwan opened a new pull request #1919:
URL: https://github.com/apache/ozone/pull/1919


   ## What changes were proposed in this pull request?
   
   The `DiskMetricsSubCommand` is a datanode admin sub command that can be used 
to query information such as Capacity, SCMUsed, and Remaining space in a 
datanode. IP address or UUID is used to get the datanode.
   
   ## What is the link to the Apache JIRA
   
   https://issues.apache.org/jira/browse/HDDS-4816
   
   ## How was this patch tested?
   
   Manually tested using docker-compose. Screenshots have been attached.
   
   Initial, before adding keys:
   <img width="1098" alt="initial" 
src="https://user-images.githubusercontent.com/34305492/107949969-11512f00-6fbc-11eb-95b9-8ff68325db2d.png";>
   
   After adding keys:
   <img width="607" alt="keys added" 
src="https://user-images.githubusercontent.com/34305492/107949996-1d3cf100-6fbc-11eb-8681-baec79310139.png";>
   
   Using UUID:
   <img width="1098" alt="uuid" 
src="https://user-images.githubusercontent.com/34305492/107950069-3a71bf80-6fbc-11eb-9efe-5b54a3cef16f.png";>
   
   


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