That seems to indicate something has gone wrong with the installation. It’s been a while since I looked at this but what the Couchbase connector does at the moment is grabs the “http://” configuration space for itself in sqoop. Since sqoop is saying there is “No manager for connect string”, the install may not have gone correctly.
I’d recommend walking through the manual install instructions (let me know if you need a pointer) to verify. Various releases of CDH have changed the layout and there are different install methods.