Hi all, We’re planning a big upgrade from 0.9.0.1 to 0.11. As part of this upgrade, we’ll be replacing the all the hardware in the cluster.
We are considering doing this as follows: One by one, we’d shut down an original broker machine, and then start up a broker on a new node with the same broker.id as the one just shutdown. I believe that this would cause the newly started broker to replicate all of its partitions from the other brokers. If needed, we could also copy over the original broker log dirs before starting up the new broker. Would this work as I expect it to? Is there anything I’m missing? Are there gotchas related with on disk log file formats that might cause some issues? Thanks! - Andrew Otto Systems Engineer, Wikimedia Foundation
