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MapReduce >> mail # user >> Question about Yarn


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Re: Question about Yarn
Can you clarify?

What tutorial and specific sections are you referring to?

Marco

> On Jan 19, 2014, at 9:26 AM, chandler song <[EMAIL PROTECTED]> wrote:
>
> hi all
>
>   I have some question about yarn when I read the tutorial on the website.
>  
>  1) the contain is physical or logic? for example, there are three PCs(A,B,C) on Cluster.  if I allocate one container. it will run on one PC all the time. or the container will work on different PC at different time.
>
> 2) the contain, I can think it's a virtual PC which can run java application? is my correct?
>
> 3)about mapreduce, how mapreduce run on yarn? after reading the tutorial, I think yarn and mapreduce is totally different thing. I think the basic unit of yarn is container. map and reduce's basic unit is map and reduce.
>
> or how yarn handle concurrent? I know in mapreduce, I don't need to think too much about concurrent. because mapreduce will do this for you. it will split data into a small unit and you can do what you do. but I don't find yarn has same thing.
>