I agree with you totally. but I want to know which node is the data kept? I mean which way to know the actual data kept?
-----Original Message----- From: sc...@scode.org [mailto:sc...@scode.org] On Behalf Of Peter Schuller Sent: Thursday, January 13, 2011 4:20 PM To: user@cassandra.apache.org Subject: Re: about the data directory > I have 4 nodes, then I I create one keyspace (such as FOO) with replica > factor =1 and insert an data, why I can see the directory of > /var/lib/Cassandra/data/FOO in every nodes? As I know, I just have one replica The schema (keyspaces and column families) are global across the cluster (anything else would not make a lot of sense I think). The replication factor determines the number of replicas of actual data, based on row key. Given replication factor one, the data should only show up on one node (assuming a single row), but all nodes will be aware of your keyspace/column family. -- / Peter Schuller