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https://issues.apache.org/jira/browse/HDDS-3732?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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runzhiwang updated HDDS-3732:
-----------------------------
    Description: 
UUID.toString cost 7.23% CPU. We can store the string of UUID when init 
DatanodeDetails, and get the string uuid directly everytime we need, so we can 
avoid UUID.toString
 !screenshot-1.png! 

> Improve the performance of SCM by avoid UUID.toString
> -----------------------------------------------------
>
>                 Key: HDDS-3732
>                 URL: https://issues.apache.org/jira/browse/HDDS-3732
>             Project: Hadoop Distributed Data Store
>          Issue Type: Improvement
>            Reporter: runzhiwang
>            Assignee: runzhiwang
>            Priority: Major
>         Attachments: output.svg, screenshot-1.png
>
>
> UUID.toString cost 7.23% CPU. We can store the string of UUID when init 
> DatanodeDetails, and get the string uuid directly everytime we need, so we 
> can avoid UUID.toString
>  !screenshot-1.png! 



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