I am thinking about the frequent example:

dc1 - node1: 0
dc1 - node2: large...number

dc2 - node1: 1
dc2 - node2: large...number + 1

In theory using the same tokens in dc2 as in dc1 does not significantly affect key distribution, specifically the two keys on the border will move to the next one, but that is not much. However it seems that there is an unexplained requirement (at least I could not find an explanation), that all nodes must have a unique token, even if they are put into a different circle by NetworkTopologyStrategy.




On 2012.03.05. 11:48, aaron morton wrote:
Moreover all tokens must be unique (even across datacenters), although - from pure curiosity - I wonder what is the rationale behind this.
Otherwise data is not evenly distributed.

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