I’m not quite sure why you would need to do this - the broker IDs are not significant outside of the internal metadata. But this is what you would have to do for each move (assuming you are running with at least replication factor 2):
1) Shut down the broker 2) Clear its partition data 3) Reconfigure the broker to the new ID 4) Restart the broker 5) Issue a partition reassignment to reassign all of broker 1’s partitions to broker 0 6) Wait for the broker to replicate all it’s partitions from other members of the cluster That’s a lot of moving data around, just to renumber. You can’t just issue the reassignment while the broker is down, and not delete the partitions, because the ID number 0 is unknown, so the reassignment will fail (the broker is not online). If you wanted to shut the entire cluster down you could, in theory, walk through the Zookeeper tree manually changing all the replica information. That assumes you can shut the whole cluster down for a while. -Todd On Fri, Nov 6, 2015 at 1:23 PM, Arathi Maddula <amadd...@boardreader.com> wrote: > Hi, > Is it possible to change the broker.ids property for a node belonging to a > Kafka cluster? For example, currently if I have brokers with ids 1,2,3. If > I want to stop broker 1, can I change broker.id to 0 (with current id = > 1) in server.properties and meta.properties files and then restart broker > 1. Can I repeat this for brokers 2 and 3 as well? > > Thanks, > Arathi > >
