I've been using the MapR REST API to create tables and streams for quite a while now.
It is, and has always been, very slow. Creating a table may take 20 seconds, and each column family takes the same.
Is this normal/expected? I'ts not a huge problem since I only have to do it once per environment/release, but it's a little unfortunate as sometimes I'm deleting/recreating 100 objects for test deployments, etc.