I'm not sure if your suggesting running a mixed mode cluster there, but AFAIK the changes to the internode protocol prohibit this. The nodes will probable see each either via gossip, but the way the messages define their purpose (their verb handler) has been changed.
Out of interest which is more painful, stopping the cluster and upgrading it or upgrading your client code? Aaron On 21/01/2011, at 12:35 AM, Daniel Josefsson <jid...@gmail.com> wrote: > In our case our replication factor is more than half the number of nodes in > the cluster. > > Would it be possible to do the following: > Upgrade half of them > Change Thrift Port and inter-server port (is this the storage_port?) > Start them up > Upgrade clients one by one > Upgrade the the rest of the servers > Or might we get some kind of data collision when still writing to the old > cluster as the new storage is being used? > > /Daniel >
