Hi John, Please read the upgrade documentation for the relevant versions:
http://kafka.apache.org/documentation.html#upgrade Also, let's try to keep the discussion in one thread. I asked some questions in the related "0.10.1 memory and garbage collection issues" thread that you started. Ismael On Sun, Jul 9, 2017 at 3:30 PM, John Yost <hokiege...@gmail.com> wrote: > Hi Everyone, > > Ever since we've upgraded from 0.9.0.1 to 0.10.0 our five-node Kafka > cluster is unstable. Specifically, whereas before a 6GB memory heap worked > fine, following the upgrade all five brokers crashed with out of memory > errors within an hour of the upgrade. I boosted the memory heap to 10GB, > which fixed the OOM error problem, but now it appears the GC pauses are > preventing the cluster from maintaining more than one ISR. I realize I > could up the replica lag settings to improve the ISR numbers, but that's > treating the symptom and not the root problem. > > There appears to be a change in the memory requirements somewhere in the > Kafka stack, which could be on the producer side as well, but I want to > rule out any configuration issues on the broker side. Are there any 0.9 > defaults in particular anyone is aware of that I should change for 0.10.x > to resolve the root problem(s) of these observations? > > --John >
