Tested (today) on Astra DB with 1.0.12 VS HCD stargateio/data-api:v1.0.12 (on top of datastax/hcd:1.0.0-early-preview).

Dropping a collection on a keyspace that does not exist results in:

• {"ok": 1} on HCD
• (error) Unknown keyspace ... on Astra DB

This discrepancy is probably unintentional (?).

For context, trying the same drop on HCD through cql console does error out:

cassandra@cqlsh> drop table scytodes.notable;
InvalidRequest: Error from server: code=2200 [Invalid query] message="Table 'scytodes.notable' doesn't exist"