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From Daning Wang <>
Subject How to change existing cluster to multi-center
Date Thu, 25 Apr 2013 20:00:56 GMT
Hi All,

We have 8 nodes cluster(replication factor is 3), about 50G data on each
node. we need to change the cluster to multi-center environment(to EC2).
the data need to have one replica on ec2.

Here is the plan,

- Change cluster config to mult-center.
- Add 2 or 3 nodes in another center, which is ec2.
- Change the replication factor to make data synced to other center.

We have not done the test yet, is this doable? the main concern is that
since connection to ec2 is slow, it will take longer time to streaming
data(should be more than 100G) at the beginning.

Anybody has done this before, please share some light,

Thanks in advance,


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