I saw the upgrade path documentation at http://kafka.apache.org/documentation.html and that kind of answers (1). Not sure if there is anything about client compatibility though.
On Tue, Dec 1, 2015 at 8:51 AM, Rajiv Kurian <ra...@signalfx.com> wrote: > I plan to upgrade both the server and clients to 0.9. Had a few questions > before I went ahead with the upgrade: > > 1. Do all brokers need to be on 0.9? Currently we are running 0.8.2. We'd > ideally like to convert only a few brokers to 0.9 and only if we don't see > problems convert the rest. > > 2. Is it possible to run Kafka 0.9 clients (specifically the consumer) > with Kafka 0.8.2 brokers? > > Any link to the upgrade path would be really useful. > > Thanks, > Rajiv >