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From Sandy Ryza <sandy.r...@cloudera.com>
Subject Re: Node scheduling in 2.1.x
Date Fri, 06 Sep 2013 06:22:47 GMT
Hi Hilfi,

Nodes are constantly heartbeating to the ResourceManager.  A node update
event is triggered each time this happens.

-Sandy


On Fri, Sep 6, 2013 at 3:20 PM, hilfi alkaff <hilfialkaff@gmail.com> wrote:

> Hi,
>
> I'm trying to trace the code flow on the scheduling done in YARN. I would
> like to know where the code that does which node to schedule for the jobs.
>
> I found the handle() function in the resource manager's scheduler (eg:
> CapacityScheduler.java) that handles node update event which then executes
> the assignment of containers for that particular node, but I do not
> understand how that node even get chosen.
>
> If anybody could tell me about a file, function or module name that does
> this, that would be extremely helpful.
>
> --
> ~Hilfi Alkaff~
>

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