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https://issues.apache.org/jira/browse/YARN-7192?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arun Suresh updated YARN-7192:
------------------------------
Attachment: YARN-7192.005.patch
Thanks [~jlowe] for the rev.
Updating the patch (005) with a {{MultiStateTranstitionListener}} as well :)
I also updated the NodeManager config to take a list of listeners, rather than
just one.
Also updated the testcases to verify the wiring works.
Do take a look.
Caveat - This is similar to the {{AsyncDispatcher::MultListenerHandler}} and
calls the listeners in order. And like you noted, an earlier one can screw up a
later one etc. I have put in a javadoc comment stating the same.
> 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,
> YARN-7192.003.patch, YARN-7192.004.patch, YARN-7192.005.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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