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https://issues.apache.org/jira/browse/YARN-6127?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ray Chiang updated YARN-6127:
-----------------------------
    Hadoop Flags: Incompatible change
    Release Note: 
This breaks rolling upgrades because it changes the major version of the NM 
state store schema. Therefore when a new NM comes up on an old state store it 
crashes.

The state store versions for this change have been updated in YARN-6798.

> Add support for work preserving NM restart when AMRMProxy is enabled
> --------------------------------------------------------------------
>
>                 Key: YARN-6127
>                 URL: https://issues.apache.org/jira/browse/YARN-6127
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: amrmproxy, nodemanager
>            Reporter: Subru Krishnan
>            Assignee: Botong Huang
>             Fix For: 2.9.0, 3.0.0-alpha4
>
>         Attachments: YARN-6127-branch-2.v1.patch, YARN-6127.v1.patch, 
> YARN-6127.v2.patch, YARN-6127.v3.patch, YARN-6127.v4.patch
>
>
> YARN-1336 added the ability to restart NM without loosing any running 
> containers. In a Federated YARN environment, there's additional state in the 
> {{AMRMProxy}} to allow for spanning across multiple sub-clusters, so we need 
> to enhance {{AMRMProxy}} to support work-preserving restart.



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