Thanks Vinod. Yes it's the second case where I am working with MR over yarn.
When I run a job then for a specific Machine I am trying to compute that how much time the machine takes to execute mapping tasks and reduce tasks. What I am doing now is that I compute time difference between container assignment and container released steps. But I can't determine if that container was assigned for a mapping or reduce task. I'll try to look into ApplicationMaster if I can get this information. On Thu, Aug 23, 2012 at 11:27 AM, Vinod Kumar Vavilapalli < vino...@hortonworks.com> wrote: > > Moving to yarn-dev, as that is the right place for this discussion. > > Can you let us know more about what you are trying to accomplish? Working > with MapReduce over YARN or your own YARN application? > > If you are working with MR over YARN, you have to note that > TaskId/TaskAttemptID/Map/Reduce tasks are MapReduce concepts. So > ResourceManager has no idea about them. MapReduce ApplicationMaster is the > place where you can obtain more such MR specific information. > > If it is the later, your question is moot. > > HTH, > +Vinod > > On Aug 22, 2012, at 6:23 PM, Shekhar Gupta wrote: > > > In ResourceManager, is there any way to findout if the assigned container > > is going to execute a mapping task or a reduce task? I can access objects > > Container, Application and Request in ResourceManager, can I somehow get > > TaskId by using any of these objects?? Please let me know a way. > > > > Thanks. > >
