ah, you know ... i have been reading it wrong. the output shows a nice fancy column called "Owns" but i've only ever seen the percentage ... the amount of data or "load" is even ... doh. thanks for the reply. cheers -sd
On Mon, Mar 14, 2011 at 10:47 PM, Narendra Sharma <narendra.sha...@gmail.com> wrote: > On the same page there is a section on Load Balance that talks about python > script to compute tokens. I believe your question is more about assigning > new tokens and not compute tokens. > > 1. "nodetool loadbalance" will result in recomputation of tokens. It will > pick tokens based on the load and not the once assigned by you. > 2. You can either use decommission and bootstrap with new tokens OR Use > "nodetool move" > > Thanks, > Naren > > On Mon, Mar 14, 2011 at 1:18 PM, Sasha Dolgy <sdo...@gmail.com> wrote: >> >> Sorry for being a bit daft ... Wanted a bit of validation or rejection ... >> >> If I have a 6 node cluster, replication factor 2 (don't think this is >> applicable to the token decision) is the following sufficient and >> correct for determining the tokens: >> >> #!/bin/bash >> for nodes in {0..5}; >> do >> echo "$nodes*(2^127/5)" | bc; >> done >> >> >> >> >> Gives me a result of: >> >> 0 >> 34028236692093846346337460743176821145 >> 68056473384187692692674921486353642290 >> 102084710076281539039012382229530463435 >> 136112946768375385385349842972707284580 >> 170141183460469231731687303715884105725 >> >> My ring right now is: >> >> >> 10.0.0.2 Up Normal 225 KB 40.78% >> 24053088190195663439419935163232881936 >> 10.0.0.3 Up Normal 201.21 KB 19.17% >> 56667357399723182105247119364967854254 >> 10.0.0.4 Up Normal 213.15 KB 17.61% >> 86624712919272143003828971968762407027 >> 10.0.0.5 Up Normal 214.54 KB 11.22% >> 105714724128406151241468359303513100912 >> 10.0.0.6 Up Normal 206.39 KB 5.61% >> 115259729732973155360288052970888447854 >> 10.0.0.7 Up Normal 247.68 KB 5.61% >> 124804735337540159479107746638263794797 >> >> If my new tokens are correct: >> >> 1. cassandra.yaml is updated on each node with new token >> 2. node is restarted and a nodetool repair is run, or is a nodetool >> loadbalance run >> >> Thanks in advance ... been staring at >> http://wiki.apache.org/cassandra/Operations#Token_selection for too >> long >> >> -- >> Sasha Dolgy >> sasha.do...@gmail.com > > -- Sasha Dolgy sasha.do...@gmail.com