how to load data( that has no primary keys) from S3 to keyspace.If there is any alternative to load the data which has no primary key, kindly suggest.

how to load data( that has no primary keys) from S3 to keyspace.If there is any alternative to load the data which has no primary key, kindly suggest.Please let me know if any further details are required.There are no columns to pair and create composite keys either.