Good idea to run NameNode and JobTracker on same machine?

2009-11-26 Thread Raymond Jennings III
Do people normally combine these two processes onto one machine? Currently I have them on separate machines but I am wondering they use that much CPU processing time and maybe I should combine them and create another DataNode.

Re: Good idea to run NameNode and JobTracker on same machine?

2009-11-26 Thread Jeff Zhang
It depends on the size of your cluster. I think you can combine them together if your cluster has less than 10 machines. Jeff Zhang On Thu, Nov 26, 2009 at 6:26 AM, Raymond Jennings III wrote: > Do people normally combine these two processes onto one machine? Currently > I have them on sep

Re: Good idea to run NameNode and JobTracker on same machine?

2009-11-26 Thread Yongqiang He
I think it is definitely not a good idea to combine these two in production environment. Thanks Yongqiang On 11/26/09 6:26 AM, "Raymond Jennings III" wrote: > Do people normally combine these two processes onto one machine? Currently I > have them on separate machines but I am wondering they us

Re: Good idea to run NameNode and JobTracker on same machine?

2009-11-26 Thread John Martyniak
I have a cluster of 4 machines plus one machine to run nn & jt. I have heard that 5 or 6 is the magic #. I will see when I add the next batch of machines. And it seems to running fine. -Jogn On Nov 26, 2009, at 11:38 AM, Yongqiang He wrote: I think it is definitely not a good idea to

RE: Good idea to run NameNode and JobTracker on same machine?

2009-11-26 Thread Srigurunath Chakravarthi
e- >From: John Martyniak [mailto:j...@beforedawnsolutions.com] >Sent: Friday, November 27, 2009 3:06 AM >To: common-user@hadoop.apache.org >Cc: >Subject: Re: Good idea to run NameNode and JobTracker on same machine? > >I have a cluster of 4 machines plus one machine to run nn

Re: Good idea to run NameNode and JobTracker on same machine?

2009-11-27 Thread Aaron Kimball
or sar should tell you. > > Regards, > Sriguru > > >-Original Message- > >From: John Martyniak [mailto:j...@beforedawnsolutions.com] > >Sent: Friday, November 27, 2009 3:06 AM > >To: common-user@hadoop.apache.org > >Cc: > >Subject: Re: Good id