Thanks Jun !
On Fri, Jul 5, 2013 at 9:38 AM, Jun Rao <[EMAIL PROTECTED]> 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
> On Thu, Jul 4, 2013 at 7:53 PM, Hanish Bansal <
> [EMAIL PROTECTED]> 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
> > Null Pointer Exception. This may be due *data format mismatch between
> > 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
> > 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
> > with previous data ?
> > --
> > *Thanks & Regards*
> > *Hanish Bansal*
*Thanks & Regards*