I'll partially answer my own post since I've not heard back anything yet. On Sat, Apr 17, 2010 at 03:56:34PM -0700, Anthony Molinaro wrote: > I was looking over http://wiki.apache.org/cassandra/Operations > and it seems like I could do something like. > > 1) shutdown cassandra on instance I want to replace > 2) create a new instance, start cassandra with AutoBootstrap = true > 3) run nodeprobe removetoken against the token of the instance I am > replacing > > Then according to the 'Handling failure' the new instance will "find the > appropriate position automatically". However, it's not clear to me > if this means it will take the same range as the shutdown node or not, > because normally AutoBootstrap == true means it will take "half the keys > from the node with the most disk space used." (from the 'Bootstrap' section). > > So will the process I describe above result in what I want, a new node > replacing an old one?
The answer to this is 'no'. If you shutdown a node and start a new node with AutoBootstrap = true, the new node will take "half the keys from the node with the most disk space used" and not "find the appropriate position automatically." I'll keep experimenting and see if I can figure out the real processes to replace bad nodes. -Anthony -- ------------------------------------------------------------------------ Anthony Molinaro <antho...@alumni.caltech.edu>
