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https://issues.apache.org/jira/browse/YARN-8298?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16586330#comment-16586330
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Eric Yang commented on YARN-8298:
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[~csingh] Patch 2 was working in progress. It only figured out the dependency
order, and submit the upgrade request. The enhancement depends on
ServiceScheduler to walk through the component list in a for loop and check
upgrade status of each component before proceeding to the next component. This
will also meet your thinking to introduce ability to cancel or abort an upgrade.
> Yarn Service Upgrade: Support express upgrade of a service
> ----------------------------------------------------------
>
> 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,
> YARN-8298.003.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 the service in one shot:
> # Aborting the upgrade will not be supported
> # Upgrade finalization will be done automatically.
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