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Posted to issues@ozone.apache.org by "Nanda kumar (Jira)" <ji...@apache.org> on 2020/06/05 16:21:00 UTC

[jira] [Updated] (HDDS-3732) Avoid UUID#toString call in DatanodeDetails#getUuidString.

     [ https://issues.apache.org/jira/browse/HDDS-3732?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Nanda kumar updated HDDS-3732:
------------------------------
    Summary: Avoid UUID#toString call in DatanodeDetails#getUuidString.  (was: Improve the performance of SCM with 7.23% by avoid UUID.toString)

> Avoid UUID#toString call in DatanodeDetails#getUuidString.
> ----------------------------------------------------------
>
>                 Key: HDDS-3732
>                 URL: https://issues.apache.org/jira/browse/HDDS-3732
>             Project: Hadoop Distributed Data Store
>          Issue Type: Sub-task
>            Reporter: runzhiwang
>            Assignee: runzhiwang
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: output.svg, screenshot-1.png, screenshot-2.png
>
>
> I start a ozone cluster with 1000 datanodes, and run two weeks with heavy workload, and perf scm.
> UUID.toString in DatanodeDetails cost 7.23% cpu because of so many datanodes.
>  !screenshot-2.png! 



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