© Deepak Vohra 2016

Deepak Vohra, Practical Hadoop Ecosystem, 10.1007/978-1-4842-2199-0_4

4. Apache HBase

Deepak Vohra

(1)Apt 105, White Rock, British Columbia, Canada

Apache HBase is a distributed, scalable database designed for Apache Hadoop. HBase is a flexible format NoSQL database. HBase has three main components: HMaster, ZooKeeper, and RegionServers. The HMaster handles the DDL (create and delete) operations. The ZooKeeper is a distributed coordination service for an HBase cluster. RegionServers manage HBase table data and serve client requests. An HBase table is mapped to one or more regions using row key ranges to split the HBase table. More regions are used as a table grows. HMaster manages region assignment. Regions are stored in RegionServers, ...

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