Hi,
As per the Datastax Cassandra Documentation 1.2,
"for single data center deployments, tokens are calculated by dividing
the hash range by the number of nodes in the cluster", *does it mean we
have to recalculate the tokens of keys when nodes come and go?**
*
"for multiple data center deployments, tokens are calculated per data
center so that the hash range is evenly divide for the nodes in each
data center." *This is understandable, but when I go to the getToken
method of RandomPartitioner, I can't find any datacenter-aware token
calculation* *codes.
By the way, the documentation doesn't mention how Murmur3Partitioner
calculate tokens for multiple data center. Assuming it doesn't calculate
tokens per data center, what difference between Murmur3Partitioner and
RandomPartitioner has made that unnecessary?
*Thanks.
*
*Manu Zhang*
*
