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From "Personal" <nitin.mo...@gmail.com>
Subject Re: Help writing a YARN application
Date Tue, 24 Sep 2013 05:39:58 GMT
Hi Pradeep,

You can also look at Weave - A simpler thread abstraction over YARN. 


Runs on multiple HDs.


On Mon, Sep 23, 2013 at 10:20 PM, Pradeep Gollakota <pradeepg26@gmail.com>

> Hi Arun,
> Thanks so much for your reply. I looked at the app you linked, it's way
> easier to understand. Unfortunately, I can't use YarnClient class. It
> doesn't seem to be in the 2.0.0 branch. Our production environment is using
> cdh-4.x and it looks like they're tracking the 2.0.x branch.
> However, I have looked at other implementations (notably Kitten and Giraph)
> for inspiration and able to get my containers successfully launching.
> Thanks for the help!
> - Pradeep
> On Mon, Sep 23, 2013 at 4:46 PM, Arun C Murthy <acm@hortonworks.com> wrote:
>> I looked at your code, it's using really old apis/protocols which are
>> significantly different now. See hadoop-2.1.0-beta release for latest
>> apis/protocols.
>> Also, you should really be using yarn client module rather than raw
>> protocols.
>> See https://github.com/hortonworks/simple-yarn-app for a simple example.
>> thanks,
>> Arun
>> On Sep 20, 2013, at 11:24 AM, Pradeep Gollakota <pradeepg26@gmail.com>
>> wrote:
>> Hi All,
>> I've been trying to write a Yarn application and I'm completely lost. I'm
>> using Hadoop 2.0.0-cdh4.4.0 (Cloudera distribution). I've uploaded my
>> sample code to github at https://github.com/pradeepg26/sample-yarn
>> The problem is that my application master is exiting with a status of 1
>> (I'm expecting that since my code isn't complete yet). But I have no logs
>> that I can examine. So I'm not sure if the error I'm getting is the error
>> I'm expecting. I've attached the nodemanger and resourcemanager logs for
>> your reference as well.
>> How can I get started on writing YARN applications beyond the initial
>> tutorial?
>> Thanks for any help/pointers!
>> Pradeep
>> <yarn-yarn-nodemanager-pradeep-gollakota.vm.lithium.com.log>
>> <yarn-yarn-resourcemanager-pradeep-gollakota.vm.lithium.com.log>
>> --
>> Arun C. Murthy
>> Hortonworks Inc.
>> http://hortonworks.com/
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