0.9 clients cannot connect to 0.8 brokers. If you want to upgrade to 0.9, you first need to upgrade your brokers to 0.9 -- your running 0.8 clients will be able to connect to 0.9 brokers. Afterwards, you can update your clients to 0.9, too.
Btw: since 0.10.2, clients are backward compatible to 0.10.0 and 0.10.1 brokers (bot not to 0.9 or older brokers). -Matthias On 4/14/17 12:14 PM, Milind Vaidya wrote: > Is Kafka Producer 0.9.0 compatible with 0.8.* brokers ? > > I could not conclude to tried it out myself. > > I tried using that setup, which works, in the sense messages to come > through on consumer side. > > But with new producer I was trying to user flush() call to force sending of > messages from the producer. This call is blocking forever. Any suggestions > to get rid of that ? or this is due to incompatibility ? > > Thanks >
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