Re: Can we replace namenode machine with some other machine ?

2011-09-21 Thread Uma Maheswara Rao G 72686
You copy the same installations to new machine and change ip address. After that configure the new NN addresses to your clients and DNs. >Also Does Namenode/JobTracker machine's configuration needs to be better >than datanodes/tasktracker's ?? I did not get this question. Regards, Uma - Ori

Re: Can we replace namenode machine with some other machine ?

2011-09-21 Thread praveenesh kumar
If I just change configuration settings in slave machines, Will it effect any of the data that is currently residing in the cluster ?? And my second question was... Do we need the master node (NN/JT hosting machine) to have good configuration than our slave machines(DN/TT hosting machines). Actua

Re: Can we replace namenode machine with some other machine ?

2011-09-21 Thread Uma Maheswara Rao G 72686
kumar Date: Thursday, September 22, 2011 10:42 am Subject: Re: Can we replace namenode machine with some other machine ? To: common-user@hadoop.apache.org > If I just change configuration settings in slave machines, Will it > effectany of the data that is currently residing in the c

Re: Can we replace namenode machine with some other machine ?

2011-09-21 Thread praveenesh kumar
:-) > > > Regards, > Uma > - Original Message - > From: praveenesh kumar > Date: Thursday, September 22, 2011 10:42 am > Subject: Re: Can we replace namenode machine with some other machine ? > To: common-user@hadoop.apache.org > > > If I just change configurat

Re: Can we replace namenode machine with some other machine ?

2011-09-22 Thread Uma Maheswara Rao G 72686
uide. All this details has been documented very well. Regards, Uma - Original Message - From: praveenesh kumar Date: Thursday, September 22, 2011 11:45 am Subject: Re: Can we replace namenode machine with some other machine ? To: common-user@hadoop.apache.org > But apart from storing m

Re: Can we replace namenode machine with some other machine ?

2011-09-22 Thread Harsh J
On Thu, Sep 22, 2011 at 11:44 AM, praveenesh kumar wrote: > But apart from storing metadata info, Is there anything more NN/JT machines > are doing ?? . > So I can say I can survive with poor NN if I am not dealing with lots of > files in HDFS ? The JT and NN are your central throughput machines

Re: Can we replace namenode machine with some other machine ?

2011-09-22 Thread Steve Loughran
On 22/09/11 05:42, praveenesh kumar wrote: Hi all, Can we replace our namenode machine later with some other machine. ? Actually I got a new server machine in my cluster and now I want to make this machine as my new namenode and jobtracker node ? Also Does Namenode/JobTracker machine's configur

RE: Can we replace namenode machine with some other machine ?

2011-09-22 Thread Michael Segel
: Re: Can we replace namenode machine with some other machine ? > > On 22/09/11 05:42, praveenesh kumar wrote: > > Hi all, > > > > Can we replace our namenode machine later with some other machine. ? > > Actually I got a new server machine in my cluster and now I want to ma

Re: Can we replace namenode machine with some other machine ?

2011-09-22 Thread Steve Loughran
On 22/09/11 17:13, Michael Segel wrote: I agree w Steve except on one thing... RAID 5 Bad. RAID 10 (1+0) good. Sorry this goes back to my RDBMs days where RAID 5 will kill your performance and worse... sorry, I should have said RAID >=5. The main thing is you don't want the NN data lost.

RE: Can we replace namenode machine with some other machine ?

2011-09-22 Thread Michael Segel
, 22 Sep 2011 17:18:55 +0100 > From: ste...@apache.org > To: common-user@hadoop.apache.org > Subject: Re: Can we replace namenode machine with some other machine ? > > On 22/09/11 17:13, Michael Segel wrote: > > > > I agree w Steve except on one thing... > > >