Then you'll have under-replicated partitions. However, even if you have 3 brokers with a replication factor of 2 and you lose a single broker you'll still likely have under-replicated partitions. Partitions are assigned to brokers, 1 broker will be the leader and n brokers will be followers. If any of the brokers with replicas of the partition on it crash then you'll have under-replicated partitions.
On 16 February 2016 at 14:45, Sean Morris (semorris) <semor...@cisco.com> wrote: > So if I have a replication factor of 2, but only 2 brokers, then > replication works, but what if I lose one broker? > > Thanks, > Sean > > On 2/16/16, 9:14 AM, "Damian Guy" <damian....@gmail.com> wrote: > > >Hi, > > > >You need to have at least replication factor brokers. > >replication factor = 1 is no replication. > > > >HTH, > >Damian > > > >On 16 February 2016 at 14:08, Sean Morris (semorris) <semor...@cisco.com> > >wrote: > > > >> Should your number of brokers be atleast one more then your replication > >> factor of your topic(s)? > >> > >> So if I have a replication factor of 2, I need atleast 3 brokers? > >> > >> Thanks, > >> Sean > >> > >> > >
