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Posted to yarn-issues@hadoop.apache.org by "Botong Huang (JIRA)" <ji...@apache.org> on 2018/10/01 15:59:00 UTC

[jira] [Commented] (YARN-8760) [AMRMProxy] Fix concurrent re-register due to YarnRM failover in AMRMClientRelayer

    [ https://issues.apache.org/jira/browse/YARN-8760?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16634229#comment-16634229 ] 

Botong Huang commented on YARN-8760:
------------------------------------

TestNMProxy failure is irrelevant and is tracked under YARN-8837

> [AMRMProxy] Fix concurrent re-register due to YarnRM failover in AMRMClientRelayer
> ----------------------------------------------------------------------------------
>
>                 Key: YARN-8760
>                 URL: https://issues.apache.org/jira/browse/YARN-8760
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Botong Huang
>            Assignee: Botong Huang
>            Priority: Major
>         Attachments: YARN-8760.v1.patch
>
>
> When home YarnRM is failing over, FinishApplicationMaster call from AM can have multiple retry threads outstanding in FederationInterceptor. When new YarnRM come back up, all retry threads will re-register to YarnRM. The first one will succeed but the rest will get "Application Master is already registered" exception. We should catch and swallow this exception and move on. 



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