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Kafka >> mail # user >> Kafka rolling upgrade


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Re: Kafka rolling upgrade
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
> 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 <
> [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
> 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*