Thank you for helpful reply :) Cheers, -- Hyunsik Choi
On Wed, Aug 10, 2011 at 2:23 PM, Arun C Murthy <a...@hortonworks.com> wrote: > > On Aug 9, 2011, at 9:28 PM, Hyunsik Choi wrote: > > > Hi guys, > > > > MRv2 looks very promising for various applications. We have considered > > an application based on Yarn, but this app is required the adaptive > > resource assignment. In other words, this app may need additional > > resources while this app is running. Is it possible? > > > > Absolutely. > > > After I look at some code, especially YARNRunner, ResourceMgrDelegate, > > and ClientRMProtocol. In these classes, an application seems to be > > submitted with necessary resource capacity description. So, it is > > impossible? > > Typically, MR applications present resource requirements for maps upfront > (after split calculation), but submit reduce resource requirements later. > > So, yes - applications can change their resource requests at any point > during their lifecycle. > > hth, > Arun > >
