Why is that tricky? That's what bootstrap will give you automatically :)
On Wed, Dec 9, 2009 at 8:10 AM, Sunil Khedar <[email protected]> wrote: > And while adding 2nd DC we have to make sure that, nodes along the ring > should alternate data centers to avoid hot spots. As you explained in > http://wiki.apache.org/cassandra/Operations > > And that can be a tricky. Correct? > > Thanks, > Sunil > > On Wed, Dec 9, 2009 at 7:06 PM, Jonathan Ellis <[email protected]> wrote: >> >> It should work, but because of the way RAS works you need to have >> equal nodes in DCs for it to be balanced. so, when you do decide to >> add the 2nd DC, you should add as many nodes as you have in the first. >> >> On Wed, Dec 9, 2009 at 4:27 AM, Sunil Khedar <[email protected]> >> wrote: >> > "Replication strategy may not be changed without wiping your data and >> > starting over." >> > >> > To start with I want to have all my nodes in a single DC. But over a >> > time of >> > period, nodes will be placed in multiple DCs. In that is it safe to >> > start >> > using "RackAwareStrategy" even if nodes are in a single DC? So, that >> > when I >> > start using multiple DCs, data wiping won't be required. >> > >> > -Sunil >> > >> > On Wed, Dec 9, 2009 at 4:27 AM, Jonathan Ellis <[email protected]> >> > wrote: >> >> >> >> On Tue, Dec 8, 2009 at 7:21 AM, Rakesh Sharma <[email protected]> wrote: >> >> > f) Can I take backups from each node and merge them on a single node? >> >> > Or >> >> > it's not at all required? >> >> >> >> All you would need to do would be to copy the snapshotted sstables >> >> into the data directory on the target node, but I'm not sure why you >> >> would want to do that. >> >> >> >> I wrote http://wiki.apache.org/cassandra/Operations to answer the >> >> other questions in more detail. :) >> >> >> >> -Jonathan >> > >> > > >
