1. this is really a user/YARN question 2. even in the mini yarn cluster, your AM is starting in a new process. Your IDE needs to attach to it
> On 22 May 2015, at 22:41, Sasha Bengal <sashatheben...@gmail.com> wrote: > > Hi, > I am learning insides of Hadoop by following a map reduce job in Eclipse > debugger with break points. I am using MiniYARNcluster. Most of sequence > goes according to Hadoop books and lessons I have studied before. Except > none of the break points are stopping in ApplicationMaster or MRAppMaster > java classes. I see that ApplicationMasterLauncher, > ApplicationMasterService, ApplicationMasterProtocol > (ApplicationMasterProtocolPBServiceImpl) get invoked, but no actual > applicationMaster class. > Can someone please answer: Is there other main application master class > that I do not know (besides ApplicationMaster and MRAppMaster)? is > ApplicationMaster not always invoked as a class? If yes, what are the cases > and what class running services (such as sending container allocation > requests) in this case? > Thank you in advanse, > Sasha
