Hi Sandy,
If I set relaxlocality to true with host name, I don't get the container
on specified host even though node has the resources.
I am using AMRMClient, only thing is I made following changes to get the
containers on the specified node.
/
//Line: 361 //
//Original//
// addResourceRequest(req.getPriority(), node, req.getCapability(), req,
true);//
//Modifiled//
// addResourceRequest(req.getPriority(), node, req.getCapability(), req,
req.getRelaxLocality());//
//
//Line 374//
//Original//
// addResourceRequest(req.getPriority(), rack, req.getCapability(), req,
true);//
//Modifiled//
// addResourceRequest(req.getPriority(), rack, req.getCapability(), req,
req.getRelaxLocality());//
///
Thanks
-Gaurav
On 11/13/2013 4:02 PM, Sandy Ryza wrote:
Yeah, specifying a host name with relaxLocality is meaningful. Schedulers
use delay scheduling (
http://www.cs.berkeley.edu/~matei/talks/2010/eurosys_delaysched.pdf) to
achieve locality when relaxLocality is on. But it is turned off by
default. The individual scheduler docs have specifics on how to configure
it.
Guarav,
Using ResourceRequests directly is not straightforward and error prone. Is
there a reason that AMRMClient is unsuitable for your needs?
-Sandy
On Wed, Nov 13, 2013 at 3:55 PM, Thomas Weise <[email protected]>wrote:
Is it possible to specify a particular node and have RM fallback to an
different node only after making an attempt to allocate for the requested
node? In other words, is the combination of specific host name and
relaxLocality=TRUE meaningful at all?
Thanks.
On Wed, Nov 13, 2013 at 3:23 PM, Alejandro Abdelnur <[email protected]
wrote:
Gaurav,
Setting relaxLocality to FALSE should do it.
thanks.
On Wed, Nov 13, 2013 at 2:58 PM, gaurav <[email protected]> wrote:
Hi,
I am trying to allocate containers on a particular node in Yarn but
Yarn
is returning me containers on different node although the requested
node
has resources available.
I checked into the allocate(AllocateRequest request) function of
ApplicationMasterService and my request is as follows
*request: ask { priority { priority: 1 } resource_name: "h2"
capability {
memory: 1000 } num_containers: 2 } ask { priority { priority: 1 }
resource_name: "/default-rack" capability { memory: 1000 }
num_containers:
2 } ask { priority { priority: 1 } resource_name: "*" capability {
memory:
1000 } num_containers: 2 } response_id: 1 progress: 0.0*
but the containers that I am getting back is as follows
[Container: [ContainerId: container_1384381084244_0001_01_000002,
NodeId:
h1:1234, NodeHttpAddress: h1:2, Resource: <memory:1024, vCores:1>,
Priority: 1, Token: Token { kind: ContainerToken, service: h1:1234 },
],
Container: [ContainerId: container_1384381084244_0001_01_000003,
NodeId:
h1:1234, NodeHttpAddress: h1:2, Resource: <memory:1024, vCores:1>,
Priority: 1, Token: Token { kind: ContainerToken, service: h1:1234 },
]]
I am attaching the test case that I have written along with the mail.
It
uses classes under org.apache.hadoop.yarn.server.resourcemanager
package.
Any pointers would be of great help
Thanks
Gaurav
--
Alejandro
