Run two Cassandra clusters...
-----Original Message-----
From: Eric tamme [mailto:[email protected]]
Sent: Friday, June 17, 2011 11:31 AM
To: [email protected]
Subject: Re: Docs: Token Selection
> What I don't like about NTS is I would have to have more replicas than
> I need. {DC1=2, DC2=2}, RF=4 would be the minimum. If I felt that 2
> local replicas was insufficient, I'd have to move up to RF=6 which
> seems like a waste... I'm predicting data in the TB range so I'm
> trying to keep replicas to a minimum.
>
> My goal is to have 2-3 replicas in a local data center and 1 replica
> in another dc. I think that would be enough barring a major
> catastrophe. But, I'm not sure this is possible. I define "local" as
> in the same data center as the client doing the insert/update.
Yes, not being able to configure the replication factor differently for each
data center is a bit annoying. Im assuming you basically want DC1 to have a
replication factor of {DC1:2, DC2:1} and DC2 to have {DC1:1,DC2:2}.
I would very much like that feature as well, but I dont know the feasibility of
it.
-Eric
