You can perform an upgrade from 2.2.x straight to 3.11.2, but the op suggests adding nodes in 3.10 to a cluster that runs 2.2.8, which is why Jeff says it won't work.
I see no reason to upgrade to 3.10 and not 3.11.2 by the way. On Wed, Mar 28, 2018 at 5:10 PM Fred Habash <fmhab...@gmail.com> wrote: > Hi ... > I'm finding anecdotal evidence on the internet that we are able to upgrade > 2.2.8 to latest 3.11.2. Post below indicates that you can upgrade to latest > 3.x from 2.1.9 because 3.x no longer requires 'structured upgrade path'. > > I just want to confirm that such upgrade is supported. If yes, where can I > find official documentation showing upgrade path across releases. > > > https://stackoverflow.com/questions/42094935/apache-cassandra-upgrade-3-x-from-2-1 > > Thanks > > On Mon, Aug 7, 2017 at 5:58 PM, ZAIDI, ASAD A <az1...@att.com> wrote: > >> Hi folks, I’ve question on upgrade method I’m thinking to execute. >> >> >> >> I’m planning from apache-Cassandra 2.2.8 to release 3.10. >> >> >> >> My Cassandra cluster is configured like one rack with two Datacenters >> like: >> >> >> >> 1. DC1 has 4 nodes >> >> 2. DC2 has 16 nodes >> >> >> >> We’re adding another 12 nodes and would eventually need to remove those 4 >> nodes in DC1. >> >> >> >> I’m thinking to add another third data center with like DC3 with 12 nodes >> having apache Cassandra 3.10 installed. Then, I start upgrading seed nodes >> first in DC1 & DC2 – once all 20nodes in ( DC1 plus DC2) upgraded – I can >> safely remove 4 DC1 nodes, >> >> can you guys please let me know if this approach would work? I’m >> concerned if having mixed version on Cassandra nodes may cause any issues >> like in streaming data/sstables from existing DC to newly created third DC >> with version 3.10 installed, will nodes in DC3 join the cluster with data >> without issues? >> >> >> >> Thanks/Asad >> >> >> >> >> >> >> >> >> > > > > -- > > > Thank you ... > ---------------------------------------- > Fred Habash, Database Solutions Architect (Oracle OCP 8i,9i,10g,11g) > > -- ----------------- Alexander Dejanovski France @alexanderdeja Consultant Apache Cassandra Consulting http://www.thelastpickle.com
