That was my instinct as well. I *think* any ZK writes would require a quorum before the transaction is committed. Getting a quorum over a several hundred/thousand node ensemble seems like a lot of traffic. Plus, from what I've read - though not 100% certain, it seems the number ZK nodes is capped at 255.
On Fri, Apr 10, 2020 at 2:52 PM Bram Van Dam <[email protected]> wrote: > On 10/04/2020 20:13, James Arbo wrote: > > When we proposed this, there was great concern from the software > architects > > that network traffic between the kubernetes pods and the ZK ensemble must > > be minimized. > > > This means that, at a minimum, we would be running at least 1 ZK ensemble > > member on every node of our K8S cluster. > > Sounds to me like this would *increase* network traffic, not decrease > it. Instead of having communication between the pod and ZK whenever > needed (which likely isn't very frequently?), you'll now be having > constant communication between the ensemble and your hundreds of > observers in order to keep the observers in sync. > > Maybe I'm missing something? > > - Bram > >
