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From "Xuan Gong (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-365) Each NM heartbeat should not generate an event for the Scheduler
Date Wed, 27 Feb 2013 22:31:14 GMT

    [ https://issues.apache.org/jira/browse/YARN-365?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13588861#comment-13588861
] 

Xuan Gong commented on YARN-365:
--------------------------------

bq:Do we need to worry about there being overlap between the 2 lists. i.e. a newlyLaunchedContainer
also got completed by the time the slow RM handled the NM updates?

Thanks for the comments. I think we are fine here. The way to handle newlyLaunchedContainers
is to submit a LAUNCHED event to RMContainerImpl, and RMContainerImpl will unregister(remove)
this container from containerAllocationExpirer list. That is how we handle the newlyLaunchedContainers.
It does not actually launch the container. Just tell the RM that this container is being used
right now. 
                
> Each NM heartbeat should not generate an event for the Scheduler
> ----------------------------------------------------------------
>
>                 Key: YARN-365
>                 URL: https://issues.apache.org/jira/browse/YARN-365
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager, scheduler
>    Affects Versions: 0.23.5
>            Reporter: Siddharth Seth
>            Assignee: Xuan Gong
>             Fix For: 2.0.4-beta
>
>         Attachments: Prototype2.txt, Prototype3.txt, YARN-365.10.patch, YARN-365.1.patch,
YARN-365.2.patch, YARN-365.3.patch, YARN-365.4.patch, YARN-365.5.patch, YARN-365.6.patch,
YARN-365.7.patch, YARN-365.8.patch, YARN-365.9.patch
>
>
> Follow up from YARN-275
> https://issues.apache.org/jira/secure/attachment/12567075/Prototype.txt

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