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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1512) Enhance CS to decouple scheduling from node heartbeats
Date Mon, 17 Mar 2014 16:59:44 GMT

    [ https://issues.apache.org/jira/browse/YARN-1512?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13938027#comment-13938027
] 

Vinod Kumar Vavilapalli commented on YARN-1512:
-----------------------------------------------

Good that we are marking the configs private and the feature disabled by default for now.

You have two sleeps inside the scheduler loop - one for 5ms and the 1sec sleep in the scheduler
thread. May be we should pull the 5ms wait into the caller and also make it configurable so
as to help tuning in large clusters depending on the cost of the scheduling loop?

Looks fine enough to me otherwise.


> Enhance CS to decouple scheduling from node heartbeats
> ------------------------------------------------------
>
>                 Key: YARN-1512
>                 URL: https://issues.apache.org/jira/browse/YARN-1512
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Arun C Murthy
>            Assignee: Arun C Murthy
>         Attachments: YARN-1512.patch, YARN-1512.patch, YARN-1512.patch
>
>
> Enhance CS to decouple scheduling from node heartbeats; a prototype has improved latency
significantly.



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