Are there any good resources about managing schema changes in Cassandra? In our relational database, we have added/removed columns and indexes number of times over the development cycles. Sometimes we need to migrate data, but overall the effort is minimal since the data is normalized. But in Cassandra, the same data may be duplicated in multiple places, it seems difficult to change the schemas once they are defined.
UPDATE: I don't have any specific cases since still evaluating it. In general, it seems how data models are defined influence how the data is store in Cassandra, so changes to the schema would require to reinsert the same data, for example when a new column is added to the primary key.