@prswamy t I haven't tried it myself but it looks as if there is a connector http://www.couchbase.com/connect/agenda/integrating-with-hadoop/. It uses Sqoop which is a JDBC based connector between Hive and other database systems.
There's also an option using nifi https://community.hortonworks.com/questions/210/nifi-for-rabitmq-and-couchbase-1.html
Nifi is beginner friendly, is visual and drag and drop. It has native support for hdfs and couchbase was just added, I think it's the best way to start learning Hadoop.
You can read and write to couchbase https://nifi.apache.org/docs/nifi-docs/components/org.apache.nifi.processors.couchbase.GetCouchbaseK...