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https://issues.apache.org/jira/browse/YARN-8760?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Giovanni Matteo Fumarola updated YARN-8760:
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Fix Version/s: 3.2.0
> [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
> Fix For: 3.2.0
>
> 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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