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From Vitalii Stoianov <vitalii.stoianov...@gmail.com>
Subject Re: [EXTERNAL] Kafka upgrade from 0.10 to 2.3.x
Date Tue, 26 Nov 2019 22:03:35 GMT
On Fri, Nov 22, 2019 at 10:18 AM Jose Manuel Vega Monroy <
jose.monroy@williamhill.com> wrote:

> Hi Vitalii,
>
> About log format, if clients are old ones will start to fail since they
> couldn't understand the messages.
>
> So bump them if you planning upgrade the log format version.
>
> Thanks
>
> Get Outlook for Android<https://aka.ms/ghei36>
>
> ________________________________
> From: Vitalii Stoianov <vitalii.stoianov.ua@gmail.com>
> Sent: Thursday, November 21, 2019 10:31:22 PM
> To: users@kafka.apache.org <users@kafka.apache.org>
> Subject: [EXTERNAL] Kafka upgrade from 0.10 to 2.3.x
>
> Hi All,
>
> All the docs that I was able to find describe the rolling upgrade.
> But I didn't find any docs that describe how to perform no-rolling upgrade.
>
> So if system can afford downtime how in this case to upgrade kafka form
> version 0.10.0 to 2.3.x.
> Is it still required to do few restarts or we can just upgrade all in one
> go?
>
> For example:
> 0. Stop producers -> consumer -> brokers.
> 1. Upgrade brokers, clients.
> 2. Upgrade brokers, inter.broker.protocol.version.
> 3. Upgrade brokers, log.message.format.version.
> 4. Start brokers.
> 5. Start consumers.
> 6. Start producers.
>
> In case of upgrade from 0.10.0 to 2.3.x Docs states that message format has
> changed since version 0.10.0
>
> https://urldefense.proofpoint.com/v2/url?u=https-3A__kafka.apache.org_22_documentation.html-23messageset&d=DwIBaQ&c=pWn2jKJ-j-AhxLuiRFe-Qw&r=i5Pk4pirVCmwsmddZqplM1jyQtVWeoOOb-vkuqku5P8&m=1Bbq_fCBGYdws-Lil0jrt3sHYfBeO69HPka-rrOZbH4&s=B_4bFQr79wzHjrL7LRtsG7wOCcTJqmcQqOUfoAC80gc&e=
> (old format that
> is used by 0.10.0) and in 0.11.0 was introduced new format that is used
> till now 2.3.x (as I understand).
>
> What will happen with kafka brokers data logs on disk after message format
> change change ?
> And if data on disk is not changed during change of message format: What
> will happen if new consumer receive message in old message format because
> it was not read by consumer before upgrade?
>
> Regards,
> Vitalii.
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