>> So, if I understand correctly the data of rack1's 5 nodes will be replicated >> on the single node of rack2. >> And then, the node of rack1 will host all the data of the cluster. Yup.
To get RF3 NTS will place a replica in rack 1, then one in rack 2 and then one in rack 1. If you are using racks it's best to have an even distribution of nodes and the RF to be a multiple of the number of racks. Cheers ----------------- Aaron Morton Freelance Cassandra Developer New Zealand @aaronmorton http://www.thelastpickle.com On 21/12/2012, at 8:13 AM, Rob Coli <[email protected]> wrote: > On Thu, Dec 20, 2012 at 10:18 AM, DE VITO Dominique > <[email protected]> wrote: >> With RF=3 and NetworkTopologyStrategy, "The first replica per data center is >> placed according to the partitioner (same as with SimpleStrategy). >> Additional replicas in the same data center are then determined by walking >> the ring clockwise until a node in a different rack from the previous >> replica is found." >> >> So, if I understand correctly the data of rack1's 5 nodes will be replicated >> on the single node of rack2. >> And then, the node of rack1 will host all the data of the cluster. > > https://issues.apache.org/jira/browse/CASSANDRA-3810 > > =Rob > > -- > =Robert Coli > AIM>ALK - [email protected] > YAHOO - rcoli.palominob > SKYPE - rcoli_palominodb
