This is golden! thanks a heap guys On Mon, Sep 5, 2011 at 6:07 PM, Nick Bailey <n...@datastax.com> wrote:
> You can place each of the 4 new nodes exactly in the middle of 2 of > the current nodes. This way each node will still be responsible for > the same amount of data but your old nodes did not move. > > On Mon, Sep 5, 2011 at 2:56 PM, amulya rattan <talk2amu...@gmail.com> > wrote: > > Ah, missed that. Thanks for the pointer. > > While we are at it, the doc says that if I am doubling the strength of my > > cluster, and I assign calculated tokens to the new nodes, i don't need to > do > > the nodetool move for old nodes. Won't I have to assign the old nodes > with > > their new respective tokens too? If I had 4 nodes and I add 4 more, the > > token distribution for each node changes. Then how could I get away with > not > > assigning old nodes with new tokens? > > ~Amulya > > > > On Mon, Sep 5, 2011 at 4:12 AM, Sylvain Lebresne <sylv...@datastax.com> > > wrote: > >> > >> Have you done step 6 of the 'To add nodes to a Cassandra cluster' of > >> http://www.datastax.com/docs/0.8/operations/clustering#adding-capacity, > >> aka, run nodetool cleanup on the previously existing nodes ? > >> > >> -- > >> Sylvain > >> > >> On Sun, Sep 4, 2011 at 11:58 AM, amulya rattan <talk2amu...@gmail.com> > >> wrote: > >> > Hi there, > >> > I had a 3 nodes ring, added a 4th one, and moved others to > appropriate > >> > tokens..doing nodetool ring shows: > >> > 127.0.0.1 datacenter1 rack1 Up Normal 348.82 MB > >> > 25.00% 0 > >> > 127.0.0.2 datacenter1 rack1 Up Normal 349.81 MB > >> > 25.00% 42535295865117307932921825928971026432 > >> > 127.0.0.3 datacenter1 rack1 Up Normal 437.04 MB > >> > 25.00% 85070591730234615865843651857942052864 > >> > 127.0.0.4 datacenter1 rack1 Up Normal 261.74 MB > >> > 25.00% 127605887595351923798765477786913079296 > >> > Although it shows 25% on all nodes, the data distribution seems > totally > >> > unbalanced, how did that happen? > >> > Also if I happen to have a thousand node cluster, and add another 100 > >> > nodes, > >> > is it ok to start moving all nodes to their respective new tokens > >> > simultaneously or one-by-one? > >> > Any response is appreciated. > >> > ~Amulya > > > > >
