Hortonworks Data Platform deploys Apache HCatalog to manage the metadata services for your Hadoop cluster.
Apache HCatalog is a table and storage management service for data created using Apache Hadoop. This includes:
Providing a shared schema and data type mechanism.
Providing a table abstraction so that users need not be concerned with where or how their data is stored.
Providing interoperability across data processing tools such as Pig, MapReduce, and Hive.
For more details, see the following resources:
For more details on the Apache HCatalog project, use the following resources: