Cloudera Docs

Enable HBase high availability using Cloudera Manager

You can configure one or more backup Master role in Cloudera Manager to ensure that every component is highly available.

HBase administrators can configure HBase clusters with High Availability, or HA. You must configure HA when HBase applications require low-latency queries and can tolerate minimal (near-zero-second) staleness for read operations. Examples include queries on remote sensor data, distributed messaging, object stores, and user profile management.

Most aspects of HBase are highly available in a standard configuration. A cluster typically consists of one Master and three or more RegionServers. To ensure that every component is highly available, configure one or more backup Masters. The backup Masters run on other hosts than the active Master.

  1. In Cloudera Manager, select the HBase service.
  2. Follow the process for adding a role instance and add a backup Master to a different host than the one on which the active Master is running.