You may be able to do it with the Order Preserving Partitioner with making key to node mapping before storing data, or you may need your custom Partitioner. Please note that you are responsible to distribute load between nodes in this case. >From application design perspective, it is not clear for me why you need to store user A and his friends into same box....
maki 2011/6/5 Khanh Nguyen <nguyen.h.kh...@gmail.com>: > Hi everyone, > > Is it possible to have direct control over where objects are stored in > Cassandra? For example, I have a Cassandra cluster of 4 machines and 4 > objects A, B, C, D; I want to store A at machine 1, B at machine 2, C > at machine 3 and D at machine 4. My guess is that I need to intervene > they way Cassandra hashes an object into the keyspace? If so, how > complicated the task will be? > > I'm new to the list and Cassandra. The reason I am asking is that my > current project is related to social locality of data: if A and B are > Facebook friends, I want to store their data as close as possible, > preferably in the same machine in a cluster. > > Thank you. > > Regards, > > -k > -- w3m
