Re: node failure, and automatic decommission (or removetoken)

2011-03-01 Thread Mimi Aluminium
It helps, Thanks a lot, miriam On Mon, Feb 28, 2011 at 9:50 PM, Aaron Morton wrote: > I thought there was more to it. > > The steps for move or removing nodes are outlined on the operations page > wiki as you probably know. > > What approach are you considering to rebalancing the token distribut

Re: node failure, and automatic decommission (or removetoken)

2011-02-28 Thread Aaron Morton
I thought there was more to it. The steps for move or removing nodes are outlined on the operations page wiki as you probably know. What approach are you considering to rebalancing the token distribution when removing a node? E.g. If you have 5 nodes and remove 1 the best long term solution is

Re: node failure, and automatic decommission (or removetoken)

2011-02-28 Thread Mimi Aluminium
Aaron, Thanks a lot, Actually I meant a larger number of nodes than 3 and replication factor of 3. We are looking on a system that may shrink due to permanent failures, and then automatically detects the failure and stream its range to other nodes in the cluster to have again 3 replicas. I understn

Re: node failure, and automatic decommission (or removetoken)

2011-02-28 Thread aaron morton
AFAIK the general assumption is that you will want to repair the node manually, within the GCGraceSeconds period. If this cannot be done then nodetool decomission and removetoken are the recommended approach. In your example though, with 3 nodes and an RF of 3 your cluster can sustain a single

node failure, and automatic decommission (or removetoken)

2011-02-27 Thread Mimi Aluminium
Hi, I have a question about a tool or a wrapper that perform automatic data move upon node failure? Assuming I have 3 nodes with a replication factor of 3. In case of one node failure, does the third replica (that was located before on the failed node ) re-appears on one the of live nodes? I am lo