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From Joel Samuelsson <samuelsson.j...@gmail.com>
Subject Re: Simple upgrade for outdated cluster
Date Fri, 03 Aug 2018 13:21:51 GMT
Thank you for your replies! We're at 2.0.17.

Den fre 3 aug. 2018 kl 14:34 skrev Romain Hardouin
<romainh_ml@yahoo.fr.invalid>:

> Also, you didn't mention which C*2.0 version you're using but prior to
> upgrade to 2.1.20, make sure to use the latest 2.0 - or at least >= 2.0.7
>
> Le vendredi 3 août 2018 à 13:03:39 UTC+2, Romain Hardouin
> <romainh_ml@yahoo.fr.INVALID> a écrit :
>
>
> Hi Joel,
>
> No it's not supported. C*2.0 can't stream data to C*3.11.
>
> Make the upgrade 2.0 -> 2.1.20 then you'll be able to upgrade to 3.11.3
> i.e. 2.1.20 -> 3.11.3. You can upgrade to 3.0.17 as an intermediary step (I
> would do), but don't upgrade to 2.2. Also make sure to read carefully
> https://github.com/apache/cassandra/blob/cassandra-3.11/NEWS.txt It's a
> long read but it's important. There are lots of changes between all these
> versions.
>
> Best,
>
> Romain
> Le vendredi 3 août 2018 à 11:40:26 UTC+2, Joel Samuelsson <
> samuelsson.joel@gmail.com> a écrit :
>
>
> Hi,
>
> We have a pretty outdated Cassandra cluster running version 2.0.x. Instead
> of doing step by step upgrades (2.0 -> 2.1, 2.1 -> 2.2, 2.2 -> 3.0, 3.0 ->
> 3.11.x), would it be possible to add new nodes with a recent version (say
> 3.11.x) and start decommissioning the old ones until we have a cluster with
> only 3.11.x?
>
> Best regards,
> Joel
>

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