Hi Brian, Your way of creation seems fine. Are you "adding" this to the AMRMClient somewhere though, via [1], right before you call allocate(progress)? Cause otherwise this object's not used at all.
P.s. I'm not sure we'll handle that null for racks all that well in certain places yet; I've noticed errors in my app when I've missed passing elements or passed them as nulls, but I didn't rebase it onto 2.0.3 yet so haven't reported anything so far - will do so soon. I'd check the RM log to see if there's any WARN logged there with an NPE. [1] - http://hadoop.apache.org/docs/current/api/org/apache/hadoop/yarn/client/AMRMClient.html#addContainerRequest(org.apache.hadoop.yarn.client.AMRMClient.ContainerRequest) On Thu, Apr 11, 2013 at 11:30 PM, Brian C. Huffman <bhuff...@etinternational.com> wrote: > All, > > I'm starting to work with YARN and I'm trying to make some changes to the > distributedshell example. > > Specifically I'm trying to set the host where the distributed shell > container will run. I added the following code into ApplicationMaster.java: > final String[] containerNodes = { "node1" }; > > LOG.info("Trying to request node: " + containerNodes[0]); > ContainerRequest request = new ContainerRequest(capability, > containerNodes, null, > pri, numContainers); > > And while the log output shows this code is being executed ("Trying to > request..."), it doesn't seem to use it. Is this functionality that isn't > complete yet in the 2.0.3 yarn alpha? Or am I doing something wrong? > > Thanks, > Brian > -- Harsh J
