Magic Collaboration Studio no longer supports Apache Cassandra 3.x, therefore before upgrading Magic Collaboration Studio, you need to upgrade Cassandra to version 4.x (we recommend using Cassandra 4.0.3).
If you are running Cassandra in a cluster environment, upgrade it one node at a time to allow clients to access the cluster during the process.
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Before upgrading
Make sure that all the nodes are ready.
Create a snapshot of your data for backup.
Upgrade sstables by running the command nodetool upgradesstables on each node.
To upgrade Cassandra
Flush memtables to the disk by executing the following command: