Are you confused on what hadoop is? What about Hbase, Pig Hive? Well, this link will help you out.
Hadoop Toolbox: When to Use What | SmartData Collective.
It provides a nice short explaination for the following terms:
- Hadoop
- Hbase
- Hive
- Pig
- Sqoop
- Oozie
- Flume/Chukwa
- Avro