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MapReduce, mail # user - Container launch from appmaster


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Re: Container launch from appmaster
Bing Jiang 2012-01-11, 08:43
I think you can make control of allocated container, and check whether it
meets your requirements.
2012/1/11 Vinod Kumar Vavilapalli <[EMAIL PROTECTED]>

> Yes, you can.
>
>
> http://hadoop.apache.org/common/docs/r0.23.0/hadoop-yarn/hadoop-yarn-site/WritingYarnApplications.html#Writing_an_ApplicationMaster
> should give you a very good idea and example code about this.
>
> But, the requirements are not hard-fixed. If the scheduler cannot find
> free resources on the nodes you mention, it will try to get containers
> on a different node. Despite that, the total number of containers can
> be controlled by limiting the count against the entry for "*".
>
> HTH,
> +Vinod
>
> On Mon, Jan 9, 2012 at 10:12 PM, raghavendhra rahul
> <[EMAIL PROTECTED]> wrote:
> > Hi all,
> > I am trying to write an application master.Is there a way to specify
> > node1: 10 conatiners
> > node2: 10 containers
> > Can we specify this kind of list using the application master????
> >
>

--
Bing Jiang
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National Research Center for Intelligent Computing Systems
Institute of Computing technology
Graduate University of Chinese Academy of Science