network interface trunking

[Ryan Smith <ry...@gmail.com>]

Hello everyone,
If I have a machine (DN) with 2 network cards, can i get double bandwidth
for my data node in hadoop?
Or is the preferred solution to link aggregate the 2 interfaces on the os
layer?  Any thoughts on this would be appreciated.
Thanks in advance.
-Ryan

Re: network interface trunking

[Todd Lipcon <to...@cloudera.com>]

Hi Ryan,
Yes, you can do this -- the term is called "interface bonding" and isn't too
hard to set up in Linux as long as your switch supports it. However, it is
pretty rare that it provides an appreciable performance benefit on typical
hardware and workloads -- probably not worth the doubled switch port
requirement in most cases.

-Todd

On Wed, Aug 5, 2009 at 5:28 AM, Ryan Smith <ry...@gmail.com>wrote:

> Hello everyone,
> If I have a machine (DN) with 2 network cards, can i get double bandwidth
> for my data node in hadoop?
> Or is the preferred solution to link aggregate the 2 interfaces on the os
> layer?  Any thoughts on this would be appreciated.
> Thanks in advance.
> -Ryan
>