[jira] [Resolved] (YARN-10784) Optimize RMNodeStatusEvent process performance

["chaosju (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YARN-10784?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

chaosju resolved YARN-10784.
----------------------------
    Fix Version/s: 3.3.0
       Resolution: Fixed

> Optimize RMNodeStatusEvent process performance
> ----------------------------------------------
>
>                 Key: YARN-10784
>                 URL: https://issues.apache.org/jira/browse/YARN-10784
>             Project: Hadoop YARN
>          Issue Type: Improvement
>    Affects Versions: 2.8.5
>            Reporter: chaosju
>            Assignee: chaosju
>            Priority: Major
>             Fix For: 3.3.0
>
>         Attachments: screenshot-2.png
>
>
> According to YARN-9927 analysis. The RMNodeStatusEvent dominates 90% time consumption of RM event scheduler.
> Use async-profiler profile the  Processing of RMNodeStatusEvent，ProtoUtils.convertFromProtoFormat  Use JDK String.replace().
> It is definitely worth considering not using these JDK String methods and opting for the faster Apache Commons StringUtils.replace() instead.
> Test case on jdk8:
> for (int i=0 ; i<100000 ;i++){
>             ProtoUtils.convertFromProtoFormat(builder.getState());
>  }
> Apache Commons StringUtils.replace() :  used 30ms
>  JDK String.replace()  : used 60ms



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