HCatalog is a table storage management tool for Hadoop that exposes the tabular data of Hive metastore to other Hadoop applications. It enables users with different data processing tools (Pig, MapReduce) to easily write data onto a grid. HCatalog ensures that users don’t have to worry about where or in what format their data is stored. This is a small tutorial that explains just the basics of HCatalog and how to use it.
This tutorial is meant for professionals aspiring to make a career in Big Data Analytics using Hadoop Framework. ETL developers and professionals who are into analytics in general may as well use this tutorial to good effect.
Before proceeding with this tutorial, you need a basic knowledge of Core Java, Database
concepts of SQL, Hadoop File system, and any of Linux operating system flavors.