disk (sstable file, index and BF) layout

2011-03-01 Thread Mimi Aluminium
Hi, Can you please help me in modeling the disk layout. I am estimating the size of the sstable file, index and BF (for a certain data model) using the details in ths link http://wiki.apache.org/cassandra/ArchitectureSSTable and compare it with the real DB files. Unfortunately, there is a mismatch

node failure, and automatic decommission (or removetoken)

2011-02-27 Thread Mimi Aluminium
Hi, I have a question about a tool or a wrapper that perform automatic data move upon node failure? Assuming I have 3 nodes with a replication factor of 3. In case of one node failure, does the third replica (that was located before on the failed node ) re-appears on one the of live nodes? I am lo

Re: cluster size, several cluster on one node for multi-tenancy

2011-02-17 Thread Mimi Aluminium
Cassandra support several clusters per node? Does it mean several Cassandra daemons on each node? Do you recommend doing that ? what is the overhead? is there any link that explain how to do that? Thanks a lot, Mimi On Wed, Feb 16, 2011 at 6:43 PM, Mimi Aluminium wrote: > Hi, > We are interes