Yes, there's going to be a lot of replicas in total, but the replication factor will be 3 in each DC.  Will it still be an issue?

Blair

On Jul 12, 2013, at 10:58 AM, sankalp kohli <kohlisankalp@gmail.com> wrote:

More than the DC, I think you will be bound  by number of replicas. I dont know how it will work in case of 10-20 replication factor specially for range queries.


On Thu, Jul 11, 2013 at 7:14 PM, Blair Zajac <blair@orcaware.com> wrote:
In this C* Summit 2013 talk titled "A Deep Dive Into How Cassandra Resolves Inconsistent Data" [1], Jason Brown of Netflix mentions that they have 5 data centers  in the same cluster, two in the US, one in Europe, one in Brazil and one in Asia (I'm going from memory now since I don't want to watch the video again).

Is there a practical limit on how many different data centers one can have in a single cluster?

Thanks,
Blair

[1] http://www.youtube.com/watch?v=VRZk-NhfX18&list=PLqcm6qE9lgKJzVvwHprow9h7KMpb5hcUU&index=57