Topic: Can you Update a Primary Key in Scylla?
Audience: Scylla administrators
In Scylla, you cannot update a primary key. It is impossible to do so.
However, you can migrate the data from the old table with the old primary key to a new table with a new primary key. There are two ways to handle the migration:
Fork-lifting the historical data with the Spark Migrator tool.
Double writing the new data.
If you are running Scylla Enterprise it is advantageous to control the migration resources using Workload Prioritization.