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From "Siddharth Seth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-365) Each NM heartbeat should not generate an event for the Scheduler
Date Tue, 19 Feb 2013 22:37:15 GMT

    [ https://issues.apache.org/jira/browse/YARN-365?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13581701#comment-13581701
] 

Siddharth Seth commented on YARN-365:
-------------------------------------

Xuan, Thanks for updating the patch. Comments on the latest patch.
There's some formatting issues - exceeding the 80 width limit, spaces after commas, etc. Also,
there's some formatting changes to code which is unrelated to the patch which should be avoided.
- Don't think the RMNode internal counter for number of queued events should be exposed. Infact,
it can be implemented as a boolean instead of an integer for now, which gets reset whenever
the scheduler tries fetching the list of container updates. Additional interfaces can be introduced
when this behaviour is changed in the future.
- The nodeUpdateQueue should be cleared early, before sending out the NodeRemovedEvent - applies
to StatusUpdateWhenHealthyTransition, DeactivateNodeTransition and ReconnectNodeTransition
- getContainerInfoList can be renamed to getContainerUpdates
- In the unit tests, TestRMNodeTransition.setup() can be simplified. Don't think the 'first'
flag is required. Also, testExpiredContainer and testStatusChange need to be updated after
the latest change to the patch.


                
> 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
>         Attachments: Prototype2.txt, Prototype3.txt, YARN-365.1.patch, YARN-365.2.patch,
YARN-365.3.patch, YARN-365.4.patch, YARN-365.5.patch, YARN-365.6.patch
>
>
> Follow up from YARN-275
> https://issues.apache.org/jira/secure/attachment/12567075/Prototype.txt

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