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https://issues.apache.org/jira/browse/YARN-6667?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shilun Fan updated YARN-6667:
-----------------------------
          Component/s: federation
                       router
     Target Version/s: 3.4.0
    Affects Version/s: 3.4.0

> Handle containerId duplicate without failing the heartbeat in Federation 
> Interceptor
> ------------------------------------------------------------------------------------
>
>                 Key: YARN-6667
>                 URL: https://issues.apache.org/jira/browse/YARN-6667
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: federation, router
>    Affects Versions: 3.4.0
>            Reporter: Botong Huang
>            Assignee: Shilun Fan
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 3.4.0
>
>
> From the actual situation, the probability of this happening is very low. 
> It can only be caused by the master-slave fail-hover of YARN and the wrong 
> Epoch parameter configuration.
> We will try to be compatible with this situation and let the Application run 
> as much as possible, using the following measures:
> 1. Select a node whose heartbeat does not time out for allocation, and at the 
> same time require the node to be in the RUNNING state.
> 2. If the heartbeat of both RMs does not time out, and both are in the 
> RUNNING state, select the previously allocated RM for Container processing.



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