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From "Chandni Singh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-8018) Yarn service: Add support for initiating service upgrade
Date Fri, 16 Mar 2018 23:15:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-8018?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16403105#comment-16403105
] 

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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