EACH_QUORUM for one DC

2012-09-06 Thread Chong Zhang
Hi, If there is only one DC, can we still use EACH_QUORUM for write? We only have one DC now, but will build another one in future and like to use EACH_QUORUM when there are two. But like to know if it's good to use EACH_QUORUM with the current 1 DC. And if there are two DCs but in some cases one

Re: tokens and RF for multiple phases of deployment

2012-06-01 Thread Chong Zhang
de? > > How did you add the node ? (see > http://www.datastax.com/docs/1.0/operations/cluster_management#adding-nodes-to-a-cluster > ) > > if in doubt run nodetool repair on the new node. > > Cheers > > > - > Aaron Morton > Freelance Developer > @aa

Re: tokens and RF for multiple phases of deployment

2012-05-31 Thread Chong Zhang
waiting for the quorum from the second DC to ack the write. > > > Cheers > - > Aaron Morton > Freelance Developer > @aaronmorton > http://www.thelastpickle.com > > On 31/05/2012, at 3:20 AM, Chong Zhang wrote: > > Hi all, > > We are planning to

tokens and RF for multiple phases of deployment

2012-05-30 Thread Chong Zhang
Hi all, We are planning to deploy a small cluster with 4 nodes in one DC first, and will expend that to 8 nodes, then add another DC with 8 nodes for fail over (not active-active), so all the traffic will go to the 1st cluster, and switch to 2nd cluster if the whole 1st cluster is down or on maint