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From "Jun Gong (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-4316) Make NM's version information useful for upgrade
Date Thu, 29 Oct 2015 13:32:27 GMT

     [ https://issues.apache.org/jira/browse/YARN-4316?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Jun Gong updated YARN-4316:
    Attachment: nodes.png

> Make NM's version information useful for upgrade
> ------------------------------------------------
>                 Key: YARN-4316
>                 URL: https://issues.apache.org/jira/browse/YARN-4316
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: nodemanager
>            Reporter: Jun Gong
>            Assignee: Jun Gong
>            Priority: Minor
>         Attachments: nodes.png
> When upgrading all NM to a new bug fix version, we often upgrade some NM first, then
upgrade rest NM if all looks right. We could avoid breakdown whole cluster in this way if
new version of NM does not work well. But there is no easy way to tell us whether we have
missed upgrading some NM.
> We could see all NM's version info in RM's web page as attached. These version info are
too generic, e.g. 2.4.1, 2.6.1, 2.6.2. For small bug fix version, version will remain same.
If we could change the version info more detailed(e.g., we could make sure whether
we have upgrade all NM to the new bug fix version.
> I propose to add a new config(yarn.nodemanager.version) in yarn-site.xml to solve this
problem. When upgrading NM, we configure it to the new version at the same time. NM will report
this version to RM, then we could see it.

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