Re: Is ReplicationFactor (eventually) guaranteed?

[Rob Coli]

On 3/26/10 5:57 PM, Jianing Hu wrote:
In a cluster with ReplicationFactor>  1, if one server goes down, will
new replicas be created on other servers to satisfy the set
ReplicationFactor?

Yes, via Anti-Entropy.

http://wiki.apache.org/cassandra/AntiEntropy
http://wiki.apache.org/cassandra/ArchitectureAntiEntropy

It's worth noting that "hot" keys are likely to be re-replicated by Read 
Repair before Anti Entropy is triggered.

http://wiki.apache.org/cassandra/ReadRepair

=Rob