How to Query Hadoop Data: Hive & Methods

The usual method for querying data in a Hadoop database is through Hive. Hive is a data warehouse system that can map structured data files to a database table and provide a SQL-like query language for data retrieval. Users can query data in Hive using SQL-like statements, which will be converted into MapReduce tasks and executed on the Hadoop cluster to return query results. Additionally, users can also query data in Hadoop using databases such as HBase.