About counter types.
To use counter types, see the DataStax blog about counters and Using a counter. Do not assign this type to a column that serves as the primary key. Also, do not use the counter type in a table that contains anything other than counter types (and primary key). To generate sequential numbers for surrogate keys, use the timeuuid type instead of the counter type. You cannot create an index on a counter column.
Attention: Be sure this document version matches your product version