Hi All

We were evaluating the upgrades of Cassandra clusters managed by us to
Cassandra 5.0. It's clear that Cassandra 4.0 to Cassandra 5.0 is supported.
But I am not sure what is the status with respect to upgrading Cassandra
3.x to Cassandra 5.0.

Some online resources I found say it is not possible and you should first
jump to Cassandra 4.x. Following resources talk about the upgrade path

1.
https://planetcassandra.org/news/top-5-questions-we-re-asked-about-apache-cassandra-r-5-0/
2.
https://www.instaclustr.com/blog/top-5-questions-were-asked-about-apache-cassandra-5-0/

Also Cassandra 5.0 announcement says, "Upgrading from 4.x to 5.0 has been
designed and tested as an online upgrade, minimizing downtime for your
applications." Here is the link
<https://cassandra.apache.org/_/blog/Apache-Cassandra-5.0-Announcement.html>
.

Meanwhile there is a slack discussion
<https://the-asf.slack.com/archives/CJZLTM05A/p1726630791029329> based on
which my understanding is that there should not be an issue for upgrading
to Cassandra 5.0 from Cassandra 3.x.

I tried upgrading path (3.11.12- -> 5.0.0) using ccm but ccm seems to not
allow me to change the JAVA version on one node and is picking the
JAVA_HOME set on the machine.

It would be of great help if somebody could confirm if Cassandra upgrade
from 3.11.x to 5.0.0 is supported or not?

Regards
Manish

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