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https://issues.apache.org/jira/browse/YARN-7939?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16418014#comment-16418014
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Chandni Singh commented on YARN-7939:
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[~gsaha]
{quote}Yes, we should use UPGRADING instead of UPGRADE (which is an action
verb).
{quote}
This is inconsistent with other states. Please see my previous comment.
# To trigger stop of the service, the ServiceState that is specified is
{{STOPPED}} instead of {{STOP}}
# To trigger start of the service, the ServiceState that is specified is
{{STARTED}} instead of {{START}}
> Yarn Service Upgrade: add support to upgrade a component instance
> ------------------------------------------------------------------
>
> Key: YARN-7939
> URL: https://issues.apache.org/jira/browse/YARN-7939
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Chandni Singh
> Assignee: Chandni Singh
> Priority: Major
> Attachments: YARN-7939.001.patch
>
>
> Yarn core supports in-place upgrade of containers. A yarn service can
> leverage that to provide in-place upgrade of component instances. Please see
> YARN-7512 for details.
> Will add support to upgrade a single component instance first and then
> iteratively add other APIs and features.
>
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