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https://issues.apache.org/jira/browse/YARN-8018?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16408986#comment-16408986
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Chandni Singh commented on YARN-8018:
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[~gsaha] thanks for the review.
{quote}Is the new state supposed to be called UPGRADE or UPGRADING?
{quote}
None of the existing {{ServiceState}} are in present continuous including
{{FLEX}} so I called it {{UPGRADE}}. I don't have a strong opinion here. I can
change it to {{UPGRADING}}.
{quote}In inner class ComponentNeedsUpgradeTransition does the service state
need to be updated in the transition method?
{quote}
The Service state will not be updated in this transition.
# The service state becomes {{UPGRADE}} in
{{ServiceManager.StartUpgradeTransition}}
# The service state will become {{STABLE}} once the containers of all the
component that need upgrade will be upgraded. The code for that will be in
YARN-7939.
I will provide a new patch to address rest of the comments.
> Yarn service: Add support for initiating service upgrade
> --------------------------------------------------------
>
> Key: YARN-8018
> URL: https://issues.apache.org/jira/browse/YARN-8018
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Chandni Singh
> Assignee: Chandni Singh
> Priority: Major
> Attachments: YARN-8018.001.patch, YARN-8018.002.patch,
> YARN-8018.003.patch
>
>
> Add support for initiating service upgrade which includes the following main
> changes:
> # Service API to initiate upgrade
> # Persist service version on hdfs
> # Start the upgraded version of service
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