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RE: Requesting containers on a specific host
Hi Kishore,

hadoop-2.1.0 beta release is in voting process now.

You can try out from hadoop-2.1.0 beta RC http://people.apache.org/~acmurthy/hadoop-2.1.0-beta-rc0/ or you could check the same with trunk build.

Thanks
Devaraj k

From: Krishna Kishore Bonagiri [mailto:[EMAIL PROTECTED]]
Sent: 04 July 2013 21:33
To: [EMAIL PROTECTED]
Subject: Re: Requesting containers on a specific host

Thanks Arun, it seems to be available with 2.1.0-beta, when will that be released? Or if I want it now, could I get from the trunk?

-Kishore

On Thu, Jul 4, 2013 at 5:58 PM, Arun C Murthy <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>> wrote:
To guarantee nodes on a specific container you need to use the whitelist feature we added recently:

https://issues.apache.org/jira/browse/YARN-398
Arun

On Jul 4, 2013, at 3:14 AM, Krishna Kishore Bonagiri <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>> wrote:
I could get containers on specific nodes using addContainerRequest() on AMRMClient. But there are issues with it. I have two nodes, node1 and node2 in my cluster. And, my Application Master is trying to get 3 containers on node1, and 3 containers on node2 in that order.

While trying to request on node1, it sometimes gives me those on node2, and vice verse. When I get a container on a different node than the one I need, I release it and make a fresh request. I am having to do like that forever to get a container on the node I need.

 Though the node I am requesting has enough resources, why does it keep giving me containers on the other node? How can I make sure I get a container on the node I want?

Note: I am using the default scheduler, i.e. Capacity Scheduler.

Thanks,
Kishore

On Fri, Jun 21, 2013 at 7:25 PM, Arun C Murthy <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>> wrote:
Check if the hostname you are setting is the same in the RM logs...

On Jun 21, 2013, at 2:15 AM, Krishna Kishore Bonagiri <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>> wrote:
Hi,
  I am trying to get container on a specific host, using setHostName(0 call on ResourceRequest, but could not get allocated anything forever, which just works fine when I change the node name to "*". I am working on a single node cluster, and I am giving the name of the single node I have in my cluster.

  Is there any specific format that I need to give for setHostName(), why is it not working...

Thanks,
Kishore

--
Arun C. Murthy
Hortonworks Inc.
http://hortonworks.com/

--
Arun C. Murthy
Hortonworks Inc.
http://hortonworks.com/