FWIW, Y! and LI (and I'm sure others) have been using failover A
records for years. The only known problem/limitation is exactly what Dhruba
states.
On Jan 29, 2011, at 11:19 PM, Dhruba Borthakur wrote:
> If you want to protect urself against a rack-switch failure, then you would
> wa
If you want to protect urself against a rack-switch failure, then you would
want to keep ur primary and standby on machines in different racks.
Typically, machines in different racks have different subnets.
thanks
dhruba
On Wed, Jan 26, 2011 at 7:10 AM, mac fang wrote:
> Hi, dhruba,
>
> Thanks
Hi, dhruba,
Thanks for sharing. Seems we only need to let NameNode & Backup Node in the
same subnet. Why it is a main problem?
regards
macf
On Wed, Jan 26, 2011 at 4:14 PM, Harsh J wrote:
> Thank you for correcting that :)
>
> On Wed, Jan 26, 2011 at 11:17 AM, Dhruba Borthakur
> wrote:
> > Fb
Thank you for correcting that :)
On Wed, Jan 26, 2011 at 11:17 AM, Dhruba Borthakur wrote:
> Fb does not use the VIP approach, we tried that but quickly found out some
> limitations, one main problem being that the failover server pair has to be
> in the same subnet (for VIP to work). Instead we
Fb does not use the VIP approach, we tried that but quickly found out some
limitations, one main problem being that the failover server pair has to be
in the same subnet (for VIP to work). Instead we now use the AvatarNode
integrated with Zookeeper.
-dhruba
On Tue, Jan 25, 2011 at 6:12 PM, Harsh
Thanks, Harsh.
Any issues you see if we use this? I've already done some researches of this
approach. However i am NOT sure if there has some potential risks if we use
VIP (i am NOT a seasoned hadooper :) )
regards
macf
On Wed, Jan 26, 2011 at 10:12 AM, Harsh J wrote:
> This is a good approach
This is a good approach, is used by many to mask the NameNode address
for the DataNodes; and is also good to use while using BackupNode
(Even Facebook does this).
On Wed, Jan 26, 2011 at 7:38 AM, mac fang wrote:
> Hi, guys,
>
> Do we have any plan to enable VIP between NameNode and DataNodes, I m
Hi, guys,
Do we have any plan to enable VIP between NameNode and DataNodes, I mean
multiple NameNodes and we use a VIP stands before the NNs. Then DNs only
need to connect to the VIP. I don't know if it is valuable we have this impl
in our hdsf and if there has any issues?
Any hints are valuable
