Thanks Jun !
On Fri, Jul 5, 2013 at 9:38 AM, Jun Rao <jun...@gmail.com> wrote: > Kafka 0.8 is not backward compatible with 0.7. So you can't do inplace > upgrade. We do have a migration tool. See > https://cwiki.apache.org/confluence/display/KAFKA/Migrating+from+0.7+to+0.8 > > Thanks, > > Jun > > > On Thu, Jul 4, 2013 at 7:53 PM, Hanish Bansal < > hanish.bansal.agar...@gmail.com> wrote: > > > Hi All, > > > > I am using *Kafka-0.7.2 *in distributed mode. > > > > Now i want to upgrade Kafka version to recent stable release-*0.8 Beta > > *with > > rolling upgrade without * *any downtime. > > > > I tried to upgrade one kafka node but after starting that node i am > getting > > Null Pointer Exception. This may be due *data format mismatch between > both > > release*. > > > > My main purpose is to upgrade Kafka without shutting down whole cluster. > > > > I want to know if on one machine i upgrade Kafka and add that node to > same > > running cluster while on another machines old Kafka version are running. > > Will it create any problem? > > > > If i upgrade whole cluster to new Kafka version then will it be > consistent > > with previous data ? > > > > -- > > *Thanks & Regards* > > *Hanish Bansal* > > > -- *Thanks & Regards* *Hanish Bansal*
