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From "Arun Suresh (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-7192) Add a pluggable StateMachine Listener that is notified of NM Container State changes
Date Fri, 15 Sep 2017 00:30:00 GMT

     [ https://issues.apache.org/jira/browse/YARN-7192?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arun Suresh updated YARN-7192:
------------------------------
    Attachment: YARN-7192.002.patch

Updated the patch based on suggestions - and fixed the testcases / checkstyle and added some
javadocs.

[~roniburd], I like the Async / Sync idea, but given that the async listener might need some
extra coding - and other considerations like creating a dispatcher and handler (we can mayb
reuse the AsyncDispatcher for eg.) - lets move that to another improvement JIRA. 

> Add a pluggable StateMachine Listener that is notified of NM Container State changes
> ------------------------------------------------------------------------------------
>
>                 Key: YARN-7192
>                 URL: https://issues.apache.org/jira/browse/YARN-7192
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Arun Suresh
>            Assignee: Arun Suresh
>         Attachments: YARN-7192.001.patch, YARN-7192.002.patch
>
>
> This JIRA is to add support for a plugggable class in the NodeManager that is notified
of changes to the Container StateMachine state and the events that caused the change.
> The proposal is to modify the basic StateMachine class add support for a hook that is
called before and after a transition.



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