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MapReduce >> mail # user >> Re: Requesting containers on a specific host


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Re: Requesting containers on a specific host
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]> 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]> 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]> 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/
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB