Hi Nils Can you try with the latest mm2 default config file found at https://github.com/apache/kafka/blob/trunk/config/connect-mirror-maker.properties. Please feel free to reach out again if you are still stuck.
Thanks Karan On Tue, Jan 14, 2020 at 1:48 PM Nils Hermansson < nils.hermans...@getdreams.com> wrote: > Hello, > I am trying to setup a replication between 2 clusters with MM2. The goal is > to be able to disksnapshot the secondary cluster for backups hence we only > want one broker on the secondary cluster. It's very important for us that > we can replicate the offsets which MM2 should solve for us. > > Cluster: > A=primary > B=secondary > > Primary cluster have 3 brokers and secondary has one broker. > > My first attempt was as standalone worker. > This attempt yielded replication of the topics but no topics for offsets > were created. > MM2 configuration replication.factor = 1 was honored. > > Since I did not get any offsets in standalone mode I decided to test > cluster mode. > > Secondary attempt was running MM2 in cluster mode(still one broker in > secondary cluster) however the problem I get here is that MM2 tries to > write the messages with a replication of 3 to the secondary cluster. In > this case MM2 seem to create the offset topics but fail when trying to > create them. > > Giving: > org.apache.kafka.connect.errors.ConnectException: Error while attempting to > create/find topic(s) 'mm2-offsets.A.internal' > ... > ... > InvalidReplicationFactorException: Replication factor: 3 larger than > available brokers: 1 > ... > > I have tried setting these config value in the properties config but they > do not seem to be honored: > replication.factor = 1 > > A.replication.factor = 1 > B.replication.factor = 1 > > BR > Nils > -- Thanks Karan
