Upgrade to version 3

[Mun Dega <mu...@gmail.com>]

Hello,

If we are upgrading from version 2.2 to 3.x, should we go directly to
latest version 3.11.3?

Anything we need to look out for?  If anyone can point to an upgrade
process that would be great!

Re: Upgrade to version 3

[Alain RODRIGUEZ <ar...@gmail.com>]

Hello,

You might want to have a look at
https://issues.apache.org/jira/browse/CASSANDRA-14823

It seems that you could face a *data loss* while upgrading to Cassandra
3.11.3. Apparently, it is still somewhat unsafe to upgrade Cassandra to
C*3, even if you use the latest C*3.0.17/3.11.3. According to Blake who
reported and worked on the fix:

[...], which will lead to duplicate start bounds being emitted, and
> incorrect dropping of rows in some cases
>

It's a bug that was recently fixed and that should be soon released, I hope.

I imagine that a lot of people did this upgrade already, it might be just
fine for you as well. Yet you might want to explore this issue and maybe
consider to wait for this patch to be released to reduce the risks (or
apply this patch yourself).

C*heers,
-----------------------
Alain Rodriguez - alain@thelastpickle.com
France / Spain

The Last Pickle - Apache Cassandra Consulting
http://www.thelastpickle.com

Le jeu. 18 oct. 2018 à 12:31, Anup Shirolkar <an...@instaclustr.com>
a écrit :

> Hi,
>
> Yes you can upgrade from 2.2 to 3.11.3
>
> The steps for upgrade are there on lots of blogs and sites.
>
>  You can follow:
>
> https://myopsblog.wordpress.com/2017/12/04/upgrade-cassandra-cluster-from-2-x-to-3-x/
>
> You should read the NEWS.txt for information on any release while planning
> for upgrade.
> https://github.com/apache/cassandra/blob/trunk/NEWS.txt
>
> Please see below mail archive for your case of 2.2 to 3.x :
> https://www.mail-archive.com/user@cassandra.apache.org/msg45381.html
>
> Regards,
>
> Anup Shirolkar
>
>
>
>
> On Thu, 18 Oct 2018 at 09:30, Mun Dega <mu...@gmail.com> wrote:
>
>> Hello,
>>
>> If we are upgrading from version 2.2 to 3.x, should we go directly to
>> latest version 3.11.3?
>>
>> Anything we need to look out for?  If anyone can point to an upgrade
>> process that would be great!
>>
>>
>>

Re: Upgrade to version 3

[Anup Shirolkar <an...@instaclustr.com>]

Hi,

Yes you can upgrade from 2.2 to 3.11.3

The steps for upgrade are there on lots of blogs and sites.

 You can follow:
https://myopsblog.wordpress.com/2017/12/04/upgrade-cassandra-cluster-from-2-x-to-3-x/

You should read the NEWS.txt for information on any release while planning
for upgrade.
https://github.com/apache/cassandra/blob/trunk/NEWS.txt

Please see below mail archive for your case of 2.2 to 3.x :
https://www.mail-archive.com/user@cassandra.apache.org/msg45381.html

Regards,

Anup Shirolkar




On Thu, 18 Oct 2018 at 09:30, Mun Dega <mu...@gmail.com> wrote:

> Hello,
>
> If we are upgrading from version 2.2 to 3.x, should we go directly to
> latest version 3.11.3?
>
> Anything we need to look out for?  If anyone can point to an upgrade
> process that would be great!
>
>
>