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From "Jian He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7351) High CPU usage issue in RegistryDNS
Date Wed, 18 Oct 2017 21:31:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16210085#comment-16210085
] 

Jian He commented on YARN-7351:
-------------------------------

Billie and I debugged more. In fact, the tcp channel isn't working... usually the DNS lookup
goes to the UDP channel, hence, the tcp channel code was not tested. 
I'll comment out the tcp channel code out and open a separate jira for it. 


> High CPU usage issue in RegistryDNS
> -----------------------------------
>
>                 Key: YARN-7351
>                 URL: https://issues.apache.org/jira/browse/YARN-7351
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Jian He
>            Assignee: Jian He
>         Attachments: YARN-7351.yarn-native-services.01.patch, YARN-7351.yarn-native-services.02.patch
>
>
> Thanks [~aw] for finding this issue.
> The current RegistryDNS implementation is always running on high CPU and pretty much
eats one core. 



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