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From "Ray Chiang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-6127) Add support for work preserving NM restart when AMRMProxy is enabled
Date Tue, 18 Jul 2017 19:44:00 GMT

     [ https://issues.apache.org/jira/browse/YARN-6127?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

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

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