Re: meaning or usage of reserved containers in YARN Capacity scheduler

2014-02-24 Thread ricky l
Thanks, Arun. The scenario makes sense!! thx. On Mon, Feb 24, 2014 at 5:56 PM, Arun C Murthy wrote: > Apologies for the late reply. > > The concept of reservation is used to prevent starvation. > > For e.g. let's say you have 2 machines with 8G each. Now each of those are > running containers whi

Re: meaning or usage of reserved containers in YARN Capacity scheduler

2014-02-24 Thread Arun C Murthy
Apologies for the late reply. The concept of reservation is used to prevent starvation. For e.g. let's say you have 2 machines with 8G each. Now each of those are running containers which take up 6G on nodeA and 7G on nodeB. Another application comes in and then asks for a single container of 4

meaning or usage of reserved containers in YARN Capacity scheduler

2014-02-07 Thread ricky l
Hi all, I have a question about reserved containers in the YARN capacity scheduler. After reading the source code and related document, it is not very clear. What is the purpose or practical usage of the reserved container? thx.