HBase cross-cluster replication provides asynchronous disaster recovery by streaming WAL edits from a source cluster to one or more destination clusters. It is not a high-availability solution—applications must handle failover logic. This updated guide explains replication modes, requirements, configuration steps and operational considerations for modern HBase deployments. HBase offers built-in multi-site replication for disaster recovery (DR). Replication streams write-ahead log (WAL) edits from one cluster to another cluster or a set of clusters. Because replication is asynchronous, it does not provide automatic failover or zero-data-loss guarantees; applications must handle HA logic at the architectural level. Replication Topologies Modern HBase supports several replication patterns: Master → Slave : a primary cluster replicates edits to one or more secondary clusters. Simple and widely used for DR. Master ↔ Master : two clusters replicate to each other. HBase pre...
Fractional Chief Architect for Big Data Systems & Distributed Data Processing