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From Sasha Bengal <sashatheben...@gmail.com>
Subject Re: Question about Application Master (MiniYARNcluster)
Date Fri, 29 May 2015 14:49:21 GMT
Thank you, Steve!
I figured out by now that AM (MRAppMaster) is running. I confirmed it by
inspecting closely log files on individual mini cluster nodes. Not stopping
at the break points is an Eclipse/Ubuntu issue.
Thank you again,
Sasha

On Fri, May 29, 2015 at 7:49 AM, Steve Loughran <stevel@hortonworks.com>
wrote:

> 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 <sashathebengal@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
>
>

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