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https://issues.apache.org/jira/browse/YARN-8018?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16403105#comment-16403105
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Chandni Singh commented on YARN-8018:
-------------------------------------
[~billie.rinaldi]
I see the following in {{ServiceClient}} during flex action:
{code:java}
ApplicationReport appReport =
yarnClient.getApplicationReport(getAppId(serviceName));
if (appReport.getYarnApplicationState() != RUNNING) {
String message =
serviceName + " is at " + appReport.getYarnApplicationState()
+ " state, flex can only be invoked when service is running";
{code}
So flex is not supported while the service is stopped.
> 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.wip.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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