This is golden! thanks a heap guys
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 <firstname.lastname@example.org> 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?
> On Mon, Sep 5, 2011 at 4:12 AM, Sylvain Lebresne <email@example.com>
>> Have you done step 6 of the 'To add nodes to a Cassandra cluster' of
>> aka, run nodetool cleanup on the previously existing nodes ?
>> On Sun, Sep 4, 2011 at 11:58 AM, amulya rattan <firstname.lastname@example.org>
>> > 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