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https://issues.apache.org/jira/browse/YARN-8298?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16573685#comment-16573685
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Suma Shivaprasad commented on YARN-8298:
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Thanks for the patch [~eyang] validateAndResolveCompsStable does not seem to be
used in the code - Should it be replaced with validateAndResolveCompsUpgrade?.
Is there a reason why we want to allow only READY instances to be upgraded?
> Yarn Service Upgrade: Support fast component upgrades which accepts component
> spec
> ----------------------------------------------------------------------------------
>
> Key: YARN-8298
> URL: https://issues.apache.org/jira/browse/YARN-8298
> Project: Hadoop YARN
> Issue Type: Sub-task
> Affects Versions: 3.1.1
> Reporter: Chandni Singh
> Assignee: Chandni Singh
> Priority: Major
> Attachments: YARN-8298.001.patch, YARN-8298.002.patch
>
>
> Currently service upgrade involves 2 steps
> * initiate upgrade by providing new spec
> * trigger upgrade of each instance/component
>
> We need to add the ability to upgrade a component in shot which accepts the
> spec of the component. However there are couple of limitations when upgrading
> in this way:
> # Aborting the upgrade will not be supported
> # Upgrade finalization will be done automatically.
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