What is use of hcatalog in hadoop?

Question

I\'m new to Hadoop. I know that the HCatalog is a table and storage management layer for Hadoop. But how exactly it works and how to use it. Please give some simple example.

Answer 1

Hcatalog is the metadata management of Hadoop File system. Hcatalog can be accessed through webhcat which makes use of rest api. Whatever the tables created in hcatalog can be accessed through hive and pig.